[skip-ci] Update artifacts

Create release 1.0.0

.github/workflows/pull_request.yaml

@@ -0,0 +1,141 @@
+name: Pull Request
+
+on:
+  pull_request_target:
+    branches:
+      - master
+
+env:
+  DOCKER_FILE_PATH: Dockerfile
+  GOLANG_VERSION: 1.19.3
+  KUBERNETES_VERSION: "1.18.0"
+  KIND_VERSION: "0.10.0"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest 
+    name: Build
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip-ci]')"    
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v2
+      with:
+        ref: ${{github.event.pull_request.head.sha}}
+        
+    # Setting up helm binary
+    - name: Set up Helm
+      uses: azure/setup-helm@v3.4
+
+    - name: Set up Go
+      id: go
+      uses: actions/setup-go@v2
+      with:
+        go-version: ${{ env.GOLANG_VERSION }}
+
+    - name: Install Dependencies
+      run: |
+        make install
+
+    - name: Run golangci-lint
+      uses: golangci/golangci-lint-action@v2.3.0
+      with:
+        version: v1.45.2
+        only-new-issues: false
+        args: --timeout 10m
+
+    - name: Helm Lint
+      run: |
+        cd deployments/kubernetes/chart/reloader
+        helm lint
+
+    - name: Link check
+      uses: gaurav-nelson/github-action-markdown-link-check@v1
+
+    - name: Install kubectl
+      run: |
+        curl -LO "https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl"
+        sudo install ./kubectl /usr/local/bin/ && rm kubectl
+        kubectl version --short --client
+        kubectl version --short --client | grep -q ${KUBERNETES_VERSION}
+
+    - name: Install Kind
+      run: |
+        curl -L -o kind https://github.com/kubernetes-sigs/kind/releases/download/v${KIND_VERSION}/kind-linux-amd64
+        sudo install ./kind /usr/local/bin && rm kind
+        kind version
+        kind version | grep -q ${KIND_VERSION}
+
+    - name: Create Kind Cluster
+      run: |
+        kind create cluster
+        kubectl cluster-info
+        
+    - name: Test
+      run: make test
+
+    - name: Generate Tag
+      id: generate_tag
+      run: |
+        sha=${{ github.event.pull_request.head.sha }}
+        tag="SNAPSHOT-PR-${{ github.event.pull_request.number }}-${sha:0:8}"
+        echo "##[set-output name=GIT_TAG;]$(echo ${tag})"
+    
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Login to Registry
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.STAKATER_DOCKERHUB_USERNAME }}
+        password: ${{ secrets.STAKATER_DOCKERHUB_PASSWORD }}
+
+    - name: Generate image repository path
+      run: |
+        echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
+
+    - name: Build and Push Docker Image
+      uses: docker/build-push-action@v2
+      with:
+        context: .
+        file: ${{ env.DOCKER_FILE_PATH  }}
+        pull: true
+        push: true
+        build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
+        cache-to: type=inline
+        platforms: linux/amd64,linux/arm,linux/arm64
+        tags: |
+          ${{ env.IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
+        labels: |
+          org.opencontainers.image.source=${{ github.event.repository.clone_url }}
+          org.opencontainers.image.created=${{ steps.prep.outputs.created }}
+          org.opencontainers.image.revision=${{ github.sha }}
+
+    - name: Comment on PR
+      uses: mshick/add-pr-comment@v1
+      env:
+       GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+      with:
+        message: '@${{ github.actor }} Image is available for testing. `docker pull ${{ env.IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}`'
+        allow-repeats: false
+
+    - name: Notify Failure
+      if: failure()
+      uses: mshick/add-pr-comment@v1
+      env:
+       GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+      with:
+        message: '@${{ github.actor }} Yikes! You better fix it before anyone else finds out! [Build](https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha }}/checks) has Failed!'
+        allow-repeats: false
+
+    - name: Notify Slack
+      uses: 8398a7/action-slack@v3
+      if: always() # Pick up events even if the job fails or is canceled.
+      with:
+        status: ${{ job.status }}
+        fields: repo,author,action,eventName,ref,workflow
+      env:
+        GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+        SLACK_WEBHOOK_URL: ${{ secrets.STAKATER_DELIVERY_SLACK_WEBHOOK }}

.github/workflows/push.yaml

@@ -0,0 +1,182 @@
+name: Push
+
+on:
+  push:
+    branches:
+      - master
+
+env:
+  DOCKER_FILE_PATH: Dockerfile
+  GOLANG_VERSION: 1.19.3
+  KUBERNETES_VERSION: "1.18.0"
+  KIND_VERSION: "0.10.0"
+  HELM_REGISTRY_URL: "https://stakater.github.io/stakater-charts"
+
+jobs:
+  build:
+    name: Build
+    if: "! contains(toJSON(github.event.commits.*.message), '[skip-ci]')"
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+        with:
+          persist-credentials: false # otherwise, the token used is the GITHUB_TOKEN, instead of your personal token
+          fetch-depth: 0 # otherwise, you will fail to push refs to dest repo
+
+      # Setting up helm binary
+      - name: Set up Helm
+        uses: azure/setup-helm@v3.4
+
+      - name: Set up Go
+        id: go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GOLANG_VERSION }}
+
+      - name: Install Dependencies
+        run: |
+          make install
+
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v2.3.0
+        with:
+          version: v1.45.2
+          only-new-issues: false
+          args: --timeout 10m
+          
+      - name: Install kubectl
+        run: |
+          curl -LO "https://storage.googleapis.com/kubernetes-release/release/v${KUBERNETES_VERSION}/bin/linux/amd64/kubectl"
+          sudo install ./kubectl /usr/local/bin/ && rm kubectl
+          kubectl version --short --client
+          kubectl version --short --client | grep -q ${KUBERNETES_VERSION}
+
+      - name: Install Kind
+        run: |
+          curl -L -o kind https://github.com/kubernetes-sigs/kind/releases/download/v${KIND_VERSION}/kind-linux-amd64
+          sudo install ./kind /usr/local/bin && rm kind
+          kind version
+          kind version | grep -q ${KIND_VERSION}
+
+      - name: Create Kind Cluster
+        run: |
+          kind create cluster
+          kubectl cluster-info
+
+      - name: Test
+        run: make test
+
+      - name: Generate Tag
+        id: generate_tag
+        uses: anothrNick/github-tag-action@1.36.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          WITH_V: true
+          DEFAULT_BUMP: patch
+          DRY_RUN: true
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Login to Registry
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.STAKATER_DOCKERHUB_USERNAME }}
+          password: ${{ secrets.STAKATER_DOCKERHUB_PASSWORD }}
+
+      - name: Generate image repository path
+        run: |
+          echo IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
+      - name: Build and push
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ${{ env.DOCKER_FILE_PATH  }}
+          pull: true
+          push: true
+          build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
+          cache-to: type=inline
+          platforms: linux/amd64,linux/arm,linux/arm64
+          tags: |
+            ${{ env.IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.new_tag }}
+          labels: |
+            org.opencontainers.image.source=${{ github.event.repository.clone_url }}
+            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
+            org.opencontainers.image.revision=${{ github.sha }}
+            
+      ##############################
+      ## Add steps to generate required artifacts for a release here(helm chart, operator manifest etc.)
+      ##############################
+
+      # Generate tag for operator without "v"
+      - name: Generate Operator Tag
+        id: generate_operator_tag
+        uses: anothrNick/github-tag-action@1.36.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          WITH_V: false
+          DEFAULT_BUMP: patch
+          DRY_RUN: true
+
+      # Update chart tag to the latest semver tag
+      - name: Update Chart Version
+        env:
+          VERSION: ${{ steps.generate_operator_tag.outputs.new_tag }}
+        run: make bump-chart
+
+      - name: Helm Template
+        run: |
+          helm template reloader deployments/kubernetes/chart/reloader/ > deployments/kubernetes/reloader.yaml
+          helm template reloader deployments/kubernetes/chart/reloader/ --output-dir deployments/kubernetes/manifests && mv deployments/kubernetes/manifests/reloader/templates/* deployments/kubernetes/manifests/ && rm -r deployments/kubernetes/manifests/reloader
+
+      # Publish helm chart
+      - name: Publish Helm chart
+        uses: stefanprodan/helm-gh-pages@master
+        with:
+          branch: master
+          repository: stakater-charts
+          target_dir: docs
+          token: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          charts_dir: deployments/kubernetes/chart/
+          charts_url: ${{ env.HELM_REGISTRY_URL }}
+          owner: stakater
+          linting: on
+          commit_username: stakater-user
+          commit_email: stakater@gmail.com
+          
+      # Commit back changes
+      - name: Commit files
+        run: |
+          git config --local user.email "stakater@gmail.com"
+          git config --local user.name "stakater-user"
+          git status 
+          git add .
+          git commit -m "[skip-ci] Update artifacts" -a
+          
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          github_token: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          branch: ${{ github.ref }}
+
+      - name: Push Latest Tag
+        uses: anothrNick/github-tag-action@1.36.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          WITH_V: true
+          DEFAULT_BUMP: patch
+
+      - name: Notify Slack
+        uses: 8398a7/action-slack@v3
+        if: always() # Pick up events even if the job fails or is canceled.
+        with:
+          status: ${{ job.status }}
+          fields: repo,author,action,eventName,ref,workflow
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          SLACK_WEBHOOK_URL: ${{ secrets.STAKATER_DELIVERY_SLACK_WEBHOOK }}

.github/workflows/release.yaml

@@ -0,0 +1,44 @@
+name: Release Go project
+
+on:
+  push:
+    tags:
+      - "v*"
+
+env:
+  GOLANG_VERSION: 1.19.3
+
+jobs:
+  build:
+    name: GoReleaser build
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0 # See: https://goreleaser.com/ci/actions/
+
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ env.GOLANG_VERSION }}
+        id: go
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@master
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+
+      - name: Notify Slack
+        uses: 8398a7/action-slack@v3
+        if: always()
+        with:
+          status: ${{ job.status }}
+          fields: repo,author,action,eventName,ref,workflow
+        env:
+          GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
+          SLACK_WEBHOOK_URL: ${{ secrets.STAKATER_DELIVERY_SLACK_WEBHOOK }}

.gitignore

@@ -7,4 +7,6 @@ out/
 _gopath/
 .DS_Store
 .vscode
-vendor
+vendor
+dist
+Reloader

.goreleaser.yml

@@ -0,0 +1,26 @@
+builds:
+- env:
+  - CGO_ENABLED=0
+  goos:
+  - windows
+  - darwin
+  - linux
+  goarch:
+  - 386
+  - amd64
+  - arm
+  - arm64
+archives:
+- name_template: "{{ .ProjectName }}_v{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
+snapshot:
+  name_template: "{{ .Tag }}-next"
+checksum:
+  name_template: "{{ .ProjectName }}_{{ .Version }}_checksums.txt"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'
+env_files:
+  github_token: /home/jenkins/.apitoken/hub

.stignore

@@ -0,0 +1,3 @@
+.git
+Reloader
+__debug_bin

.version

@@ -1 +0,0 @@
-v0.0.43

Dockerfile

@@ -0,0 +1,45 @@
+ARG BUILDER_IMAGE
+ARG BASE_IMAGE
+
+# Build the manager binary
+FROM --platform=${BUILDPLATFORM} ${BUILDER_IMAGE:-golang:1.19.3} as builder
+
+ARG TARGETOS
+ARG TARGETARCH
+ARG GOPROXY
+ARG GOPRIVATE
+
+WORKDIR /workspace
+
+# Copy the Go Modules manifests
+COPY go.mod go.mod
+COPY go.sum go.sum
+# cache deps before building and copying source so that we don't need to re-download as much
+# and so that source changes don't invalidate our downloaded layer
+RUN go mod download
+
+# Copy the go source
+COPY main.go main.go
+COPY internal/ internal/
+COPY pkg/ pkg/
+
+# Build
+RUN CGO_ENABLED=0 \
+    GOOS=${TARGETOS} \
+    GOARCH=${TARGETARCH} \
+    GOPROXY=${GOPROXY} \
+    GOPRIVATE=${GOPRIVATE} \
+    GO111MODULE=on \
+    go build -mod=mod -a -o manager main.go
+
+# Use distroless as minimal base image to package the manager binary
+# Refer to https://github.com/GoogleContainerTools/distroless for more details
+FROM ${BASE_IMAGE:-gcr.io/distroless/static:nonroot}
+WORKDIR /
+COPY --from=builder /workspace/manager .
+USER 65532:65532
+
+# Port for metrics and probes
+EXPOSE 9090
+
+ENTRYPOINT ["/manager"]

Jenkinsfile

@@ -1,8 +0,0 @@
-#!/usr/bin/groovy
-@Library('github.com/stakater/stakater-pipeline-library@v2.16.6') _
-
-goBuildAndRelease {
-    publicChartRepositoryURL = 'https://stakater.github.io/stakater-charts'
-    publicChartGitURL = 'git@github.com:stakater/stakater-charts.git'
-    toolsImage = 'stakater/pipeline-tools:v2.0.13'
-}

Makefile

@@ -1,34 +1,73 @@
 # note: call scripts from /scripts
 
-.PHONY: default build builder-image binary-image test stop clean-images clean push apply deploy
+.PHONY: default build build-image test stop push apply deploy release release-all manifest push
 
-BUILDER ?= reloader-builder
+OS ?= linux
+ARCH ?= ???
+ALL_ARCH ?= arm64 arm amd64
+
+BUILDER_IMAGE ?=
+BASE_IMAGE    ?=
 BINARY ?= Reloader
 DOCKER_IMAGE ?= stakater/reloader
-# Default value "dev"
-DOCKER_TAG ?= 1.0.0
-REPOSITORY = ${DOCKER_IMAGE}:${DOCKER_TAG}
 
-VERSION=$(shell cat .version)
+# Default value "dev"
+VERSION ?= 0.0.1
+
+REPOSITORY_GENERIC = ${DOCKER_IMAGE}:${VERSION}
+REPOSITORY_ARCH = ${DOCKER_IMAGE}:v${VERSION}-${ARCH}
 BUILD=
 
 GOCMD = go
 GOFLAGS ?= $(GOFLAGS:)
 LDFLAGS =
+GOPROXY   ?=
+GOPRIVATE ?=
 
 default: build test
 
 install:
 	"$(GOCMD)" mod download
 
+run:
+	go run ./main.go
+
 build:
 	"$(GOCMD)" build ${GOFLAGS} ${LDFLAGS} -o "${BINARY}"
 
-builder-image:
-	@docker build --network host -t "${BUILDER}" -f build/package/Dockerfile.build .
+build-image:
+	docker buildx build \
+		--platform ${OS}/${ARCH} \
+		--build-arg GOARCH=$(ARCH) \
+		--build-arg BUILDER_IMAGE=$(BUILDER_IMAGE) \
+		--build-arg BASE_IMAGE=${BASE_IMAGE} \
+		--build-arg GOPROXY=${GOPROXY} \
+		--build-arg GOPRIVATE=${GOPRIVATE} \
+		-t "${REPOSITORY_ARCH}" \
+		--load \
+		-f Dockerfile \
+		.
 
-binary-image: builder-image
-	@docker run --network host --rm "${BUILDER}" | docker build --network host -t "${REPOSITORY}" -f Dockerfile.run -
+push:
+	docker push ${REPOSITORY_ARCH}
+
+release: build-image push manifest
+
+release-all:
+	-rm -rf ~/.docker/manifests/*
+	# Make arch-specific release
+	@for arch in $(ALL_ARCH) ; do \
+		echo Make release: $$arch ; \
+		make release ARCH=$$arch ; \
+	done
+
+	set -e
+	docker manifest push --purge $(REPOSITORY_GENERIC)
+
+manifest:
+	set -e
+	docker manifest create -a $(REPOSITORY_GENERIC) $(REPOSITORY_ARCH)
+	docker manifest annotate --arch $(ARCH) $(REPOSITORY_GENERIC)  $(REPOSITORY_ARCH)
 
 test:
 	"$(GOCMD)" test -timeout 1800s -v ./...
@@ -36,16 +75,14 @@ test:
 stop:
 	@docker stop "${BINARY}"
 
-clean-images: stop
-	@docker rmi "${BUILDER}" "${BINARY}"
-
-clean:
-	"$(GOCMD)" clean -i
-
-push: ## push the latest Docker image to DockerHub
-	docker push $(REPOSITORY)
-
 apply:
 	kubectl apply -f deployments/manifests/ -n temp-reloader
 
 deploy: binary-image push apply
+
+# Bump Chart
+bump-chart: 
+	sed -i "s/^version:.*/version: v$(VERSION)/" deployments/kubernetes/chart/reloader/Chart.yaml
+	sed -i "s/^appVersion:.*/appVersion: v$(VERSION)/" deployments/kubernetes/chart/reloader/Chart.yaml
+	sed -i "s/tag:.*/tag: v$(VERSION)/" deployments/kubernetes/chart/reloader/values.yaml
+	sed -i "s/version:.*/version: v$(VERSION)/" deployments/kubernetes/chart/reloader/values.yaml

README.md

@@ -6,18 +6,16 @@
 [![GitHub tag](https://img.shields.io/github/tag/stakater/reloader.svg?style=flat-square)](https://github.com/stakater/reloader/releases/latest)
 [![Docker Pulls](https://img.shields.io/docker/pulls/stakater/reloader.svg?style=flat-square)](https://hub.docker.com/r/stakater/reloader/)
 [![Docker Stars](https://img.shields.io/docker/stars/stakater/reloader.svg?style=flat-square)](https://hub.docker.com/r/stakater/reloader/)
-[![MicroBadger Size](https://img.shields.io/microbadger/image-size/stakater/reloader.svg?style=flat-square)](https://microbadger.com/images/stakater/reloader)
-[![MicroBadger Layers](https://img.shields.io/microbadger/layers/stakater/reloader.svg?style=flat-square)](https://microbadger.com/images/stakater/reloader)
 [![license](https://img.shields.io/github/license/stakater/reloader.svg?style=flat-square)](LICENSE)
 [![Get started with Stakater](https://stakater.github.io/README/stakater-github-banner.png)](http://stakater.com/?utm_source=Reloader&utm_medium=github)
 
 ## Problem
 
-We would like to watch if some change happens in `ConfigMap` and/or `Secret`; then perform a rolling upgrade on relevant `DeploymentConfig`, `Deployment`, `Daemonset` and `Statefulset`
+We would like to watch if some change happens in `ConfigMap` and/or `Secret`; then perform a rolling upgrade on relevant `DeploymentConfig`, `Deployment`, `Daemonset`, `Statefulset` and `Rollout`
 
 ## Solution
 
-Reloader can watch changes in `ConfigMap` and `Secret` and do rolling upgrades on Pods with their associated `DeploymentConfigs`, `Deployments`, `Daemonsets` and `Statefulsets`.
+Reloader can watch changes in `ConfigMap` and `Secret` and do rolling upgrades on Pods with their associated `DeploymentConfigs`, `Deployments`, `Daemonsets` `Statefulsets` and `Rollouts`.
 
 ## Compatibility
 
@@ -33,12 +31,48 @@ metadata:
   annotations:
     reloader.stakater.com/auto: "true"
 spec:
-  template: metadata:
+  template:
+    metadata:
 ```
 
-This will discover deployments/daemonsets/statefulset automatically where `foo-configmap` or `foo-secret` is being used either via environment variable or from volume mount. And it will perform rolling upgrade on related pods when `foo-configmap` or `foo-secret`are updated.
+This will discover deploymentconfigs/deployments/daemonsets/statefulset/rollouts automatically where `foo-configmap` or `foo-secret` is being used either via environment variable or from volume mount. And it will perform rolling upgrade on related pods when `foo-configmap` or `foo-secret`are updated.
 
-We can also specify a specific configmap or secret which would trigger rolling upgrade only upon change in our specified configmap or secret, this way, it will not trigger rolling upgrade upon changes in all configmaps or secrets used in a deployment, daemonset or statefulset.
+You can restrict this discovery to only `ConfigMap` or `Secret` objects that
+are tagged with a special annotation. To take advantage of that, annotate
+your deploymentconfigs/deployments/daemonsets/statefulset/rollouts like this:
+
+```yaml
+kind: Deployment
+metadata:
+  annotations:
+    reloader.stakater.com/search: "true"
+spec:
+  template:
+```
+
+and Reloader will trigger the rolling upgrade upon modification of any
+`ConfigMap` or `Secret` annotated like this:
+
+```yaml
+kind: ConfigMap
+metadata:
+  annotations:
+    reloader.stakater.com/match: "true"
+data:
+  key: value
+```
+
+provided the secret/configmap is being used in an environment variable, or a
+volume mount.
+
+Please note that `reloader.stakater.com/search` and
+`reloader.stakater.com/auto` do not work together. If you have the
+`reloader.stakater.com/auto: "true"` annotation on your deployment, then it
+will always restart upon a change in configmaps or secrets it uses, regardless
+of whether they have the `reloader.stakater.com/match: "true"` annotation or
+not.
+
+We can also specify a specific configmap or secret which would trigger rolling upgrade only upon change in our specified configmap or secret, this way, it will not trigger rolling upgrade upon changes in all configmaps or secrets used in a deploymentconfig, deployment, daemonset, statefulset or rollout.
 To do this either set the auto annotation to `"false"` (`reloader.stakater.com/auto: "false"`) or remove it altogether, and use annotations mentioned [here](#Configmap) or [here](#Secret)
 
 ### Configmap
@@ -53,7 +87,8 @@ metadata:
   annotations:
     configmap.reloader.stakater.com/reload: "foo-configmap"
 spec:
-  template: metadata:
+  template:
+    metadata:
 ```
 
 Use comma separated list to define multiple configmaps.
@@ -64,7 +99,8 @@ metadata:
   annotations:
     configmap.reloader.stakater.com/reload: "foo-configmap,bar-configmap,baz-configmap"
 spec:
-  template: metadata:
+  template: 
+    metadata:
 ```
 
 ### Secret
@@ -79,7 +115,8 @@ metadata:
   annotations:
     secret.reloader.stakater.com/reload: "foo-secret"
 spec:
-  template: metadata:
+  template: 
+    metadata:
 ```
 
 Use comma separated list to define multiple secrets.
@@ -90,19 +127,38 @@ metadata:
   annotations:
     secret.reloader.stakater.com/reload: "foo-secret,bar-secret,baz-secret"
 spec:
-  template: metadata:
+  template: 
+    metadata:
 ```
 
 ### NOTES
 
 - Reloader also supports [sealed-secrets](https://github.com/bitnami-labs/sealed-secrets). [Here](docs/Reloader-with-Sealed-Secrets.md) are the steps to use sealed-secrets with reloader.
+- For [rollouts](https://github.com/argoproj/argo-rollouts/) reloader simply triggers a change is up to you how you configure the rollout strategy.
 - `reloader.stakater.com/auto: "true"` will only reload the pod, if the configmap or secret is used (as a volume mount or as an env) in `DeploymentConfigs/Deployment/Daemonsets/Statefulsets`
 - `secret.reloader.stakater.com/reload` or `configmap.reloader.stakater.com/reload` annotation will reload the pod upon changes in specified configmap or secret, irrespective of the usage of configmap or secret.
 - you may override the auto annotation with the `--auto-annotation` flag
+- you may override the search annotation with the `--auto-search-annotation` flag
+  and the match annotation with the `--search-match-annotation` flag
 - you may override the configmap annotation with the `--configmap-annotation` flag
 - you may override the secret annotation with the `--secret-annotation` flag
 - you may want to prevent watching certain namespaces with the `--namespaces-to-ignore` flag
+- you may want to watch only a set of namespaces with certain labels by using the `--namespace-selector` flag
 - you may want to prevent watching certain resources with the `--resources-to-ignore` flag
+- you can configure logging in JSON format with the `--log-format=json` option
+- you can configure the "reload strategy" with the `--reload-strategy=<strategy-name>` option (details below)
+
+## Reload Strategies
+Reloader supports multiple "reload" strategies for performing rolling upgrades to resources. The following list describes them:
+- **env-vars**: When a tracked `configMap`/`secret` is updated, this strategy attaches a Reloader specific environment variable to any containers 
+  referencing the changed `configMap` or `secret` on the owning resource (e.g., `Deployment`, `StatefulSet`, etc.).
+  This strategy can be specified with the `--reload-strategy=env-vars` argument. Note: This is the default reload strategy.
+- **annotations**: When a tracked `configMap`/`secret` is updated, this strategy attaches a `reloader.stakater.com/last-reloaded-from` pod template annotation
+  on the owning resource (e.g., `Deployment`, `StatefulSet`, etc.). This strategy is useful when using resource syncing tools like ArgoCD, since it will not cause these tools
+  to detect configuration drift after a resource is reloaded. Note: Since the attached pod template annotation only tracks the last reload source, this strategy will reload any tracked resource should its 
+  `configMap` or `secret` be deleted and recreated.
+  This strategy can be specified with the `--reload-strategy=annotations` argument.
+  
 
 ## Deploying to Kubernetes
 
@@ -116,7 +172,7 @@ You can apply vanilla manifests by changing `RELEASE-NAME` placeholder provided
 kubectl apply -f https://raw.githubusercontent.com/stakater/Reloader/master/deployments/kubernetes/reloader.yaml
 ```
 
-By default Reloader gets deployed in `default` namespace and watches changes `secrets` and `configmaps` in all namespaces.
+By default, Reloader gets deployed in `default` namespace and watches changes `secrets` and `configmaps` in all namespaces.
 
 Reloader can be configured to ignore the resources `secrets` and `configmaps` by passing the following args (`spec.template.spec.containers.args`) to its container :
 
@@ -127,6 +183,25 @@ Reloader can be configured to ignore the resources `secrets` and `configmaps` by
 
 `Note`: At one time only one of these resource can be ignored, trying to do it will cause error in Reloader. Workaround for ignoring both resources is by scaling down the reloader pods to `0`.
 
+Reloader can be configured to watch only namespaces labeled with (one or more) labels of your choosing by using the `--namespace-selector` parameter, for example:
+```
+--namespace-selector=reloder:enabled,test:true
+```
+
+Only namespaces labeled like the following namespace YAML will be watched:
+```yaml
+kind: Namespace
+apiVersion: v1
+metadata:
+  ...
+  labels:
+    reloder: enabled
+    test: true
+  ...
+```
+If you want to select namespace only by the key of the label use ```*``` as the value.
+For example, for ```--namespace-selector=select-this:*``` all namespaces with label-key "select-this" will be selected regardless of the labels value
+
 ### Vanilla kustomize
 
 You can also apply the vanilla manifests by running the following command
@@ -145,8 +220,6 @@ You can write your own `kustomization.yaml` using ours as a 'base' and write pat
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
-namePrefix: reloader-
-
 bases:
   - https://github.com/stakater/Reloader/deployments/kubernetes
 
@@ -155,20 +228,20 @@ namespace: reloader
 
 ### Helm Charts
 
-Alternatively if you have configured helm on your cluster, you can add reloader to helm from our public chart repository and deploy it via helm using below mentioned commands
+Alternatively if you have configured helm on your cluster, you can add reloader to helm from our public chart repository and deploy it via helm using below mentioned commands. Follow [this](docs/Helm2-to-Helm3.md) guide, in case you have trouble migrating reloader from Helm2 to Helm3
 
 ```bash
 helm repo add stakater https://stakater.github.io/stakater-charts
 
 helm repo update
 
-helm install stakater/reloader
+helm install stakater/reloader # For helm3 add --generate-name flag or set the release name
 ```
 
-**Note:** By default reloader watches in all namespaces. To watch in single namespace, please run following command. It will install reloader in `test` namespace which will only watch `Deployments`, `Daemonsets` and `Statefulsets` in `test` namespace.
+**Note:** By default reloader watches in all namespaces. To watch in single namespace, please run following command. It will install reloader in `test` namespace which will only watch `Deployments`, `Daemonsets` `Statefulsets` and `Rollouts` in `test` namespace.
 
 ```bash
-helm install stakater/reloader --set reloader.watchGlobally=false --namespace test
+helm install stakater/reloader --set reloader.watchGlobally=false --namespace test # For helm3 add --generate-name flag or set the release name
 ```
 
 Reloader can be configured to ignore the resources `secrets` and `configmaps` by using the following parameters of `values.yaml` file:
@@ -180,11 +253,37 @@ Reloader can be configured to ignore the resources `secrets` and `configmaps` by
 
 `Note`: At one time only one of these resource can be ignored, trying to do it will cause error in helm template compilation.
 
+Reloader can be configured to watch only namespaces labeled with (one or more) labels of your choosing by using the `namespaceSelector` parameter
+
+| Parameter            | Description                                                    | Type    |
+| ----------------     | -------------------------------------------------------------- | ------- |
+| namespaceSelector    | list of comma separated key:value namespace                    | string  |
+
+You can also set the log format of Reloader to json by setting `logFormat` to `json` in values.yaml and apply the chart
+
+You can enable to scrape Reloader's Prometheus metrics by setting `serviceMonitor.enabled` or `podMonitor.enabled`  to `true` in values.yaml file. Service monitor will be removed in future releases of reloader in favour of Pod monitor.
+
+**Note:** Reloading of OpenShift (DeploymentConfig) and/or Argo Rollouts has to be enabled explicitly because it might not be always possible to use it on a cluster with restricted permissions. This can be done by changing the following parameters:
+
+| Parameter        | Description                                                                  | Type    |
+| ---------------- |------------------------------------------------------------------------------| ------- |
+| isOpenshift      | Enable OpenShift DeploymentConfigs. Valid value are either `true` or `false` | boolean |
+| isArgoRollouts   | Enable Argo Rollouts. Valid value are either `true` or `false`               | boolean |
+| reloadOnCreate   | Enable reload on create events. Valid value are either `true` or `false`     | boolean |
+
+**ReloadOnCreate** reloadOnCreate controls how Reloader handles secrets being added to the cache for the first time. If reloadOnCreate is set to true:
+* Configmaps/secrets being added to the cache will cause Reloader to perform a rolling update of the associated workload. 
+* When applications are deployed for the first time, Reloader will perform a rolling update of the associated workload. 
+* If you are running Reloader in HA mode all workloads will have a rolling update performed when a new leader is elected. 
+
+If ReloadOnCreate is set to false: 
+* Updates to configMaps/Secrets that occur while there is no leader will not be picked up by the new leader until a subsequent update of the configmap/secret occurs. In the worst case the window in which there can be no leader is 15s as this is the LeaseDuration.
+
 ## Help
 
 ### Documentation
 
-You can find more documentation [here](docs/)
+You can find more documentation [here](docs)
 
 ### Have a question?
 
@@ -194,8 +293,8 @@ File a GitHub [issue](https://github.com/stakater/Reloader/issues), or send us a
 
 Join and talk to us on Slack for discussing Reloader
 
-[![Join Slack](https://stakater.github.io/README/stakater-join-slack-btn.png)](https://stakater-slack.herokuapp.com/)
-[![Chat](https://stakater.github.io/README/stakater-chat-btn.png)](https://stakater.slack.com/messages/CC5S05S12)
+[![Join Slack](https://stakater.github.io/README/stakater-join-slack-btn.png)](https://slack.stakater.com/)
+[![Chat](https://stakater.github.io/README/stakater-chat-btn.png)](https://stakater-community.slack.com/messages/CC5S05S12)
 
 ## Contributing
 
@@ -205,6 +304,11 @@ Please use the [issue tracker](https://github.com/stakater/Reloader/issues) to r
 
 ### Developing
 
+1. Deploy Reloader.
+2. Run `okteto up` to activate your development container.
+3. `make build`.
+4. `./Reloader`
+
 PRs are welcome. In general, we follow the "fork-and-pull" Git workflow.
 
 1.  **Fork** the repo on GitHub

build/package/Dockerfile.build

@@ -1,21 +0,0 @@
-FROM golang:1.13.1-alpine
-MAINTAINER "Stakater Team"
-
-RUN apk update
-
-RUN apk -v --update \
-    add git build-base && \
-    rm -rf /var/cache/apk/* && \
-    mkdir -p "$GOPATH/src/github.com/stakater/Reloader"
-
-ADD . "$GOPATH/src/github.com/stakater/Reloader"
-
-RUN cd "$GOPATH/src/github.com/stakater/Reloader" && \
-    go mod download && \
-    CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a --installsuffix cgo --ldflags="-s" -o /Reloader
-
-COPY build/package/Dockerfile.run /
-
-# Running this image produces a tarball suitable to be piped into another
-# Docker build command.
-CMD tar -cf - -C / Dockerfile.run Reloader

build/package/Dockerfile.run

@@ -1,8 +0,0 @@
-FROM alpine:3.9
-MAINTAINER "Stakater Team"
-
-RUN apk add --update ca-certificates
-
-COPY Reloader /bin/Reloader
-
-ENTRYPOINT ["/bin/Reloader"]

deployments/kubernetes/chart/reloader/Chart.yaml

@@ -3,27 +3,19 @@
 apiVersion: v1
 name: reloader
 description: Reloader chart that runs on kubernetes
-version: v0.0.43
-appVersion: v0.0.43
+version: v1.0.1
+appVersion: v1.0.1
 keywords:
   - Reloader
   - kubernetes
 home: https://github.com/stakater/Reloader
 sources:
-- https://github.com/stakater/IngressMonitorController
+  - https://github.com/stakater/Reloader
 icon: https://raw.githubusercontent.com/stakater/Reloader/master/assets/web/reloader-round-100px.png
 maintainers:
-- name: Stakater
-  email: hello@stakater.com
-- name: rasheedamir
-  email: rasheed@aurorasolutions.io
-- name: waseem-h
-  email: waseemhassan@stakater.com
-- name: faizanahmad055
-  email: faizan.ahmad55@outlook.com
-- name: kahootali
-  email: ali.kahoot@aurorasolutions.io
-- name: ahmadiq
-  email: ahmad@aurorasolutions.io
-- name: ahsan-storm
-  email: ahsanmuhammad1@outlook.com
+  - name: Stakater
+    email: hello@stakater.com
+  - name: rasheedamir
+    email: rasheed@stakater.com
+  - name: faizanahmad055
+    email: faizan.ahmad55@outlook.com

deployments/kubernetes/chart/reloader/OWNERS

@@ -5,6 +5,7 @@ approvers:
 - waseem-h
 - rasheedamir
 - ahsan-storm
+- ahmedwaleedmalik
 reviewers:
 - faizanahmad055
 - kahootali
@@ -12,3 +13,4 @@ reviewers:
 - waseem-h
 - rasheedamir
 - ahsan-storm
+- ahmedwaleedmalik

deployments/kubernetes/chart/reloader/templates/NOTES.txt

@@ -1,7 +1,7 @@
 - For a `Deployment` called `foo` have a `ConfigMap` called `foo-configmap`. Then add this annotation to main metadata of your `Deployment`
-  configmap.reloader.stakater.com/reload: "foo-configmap"
+  {{ .Values.reloader.custom_annotations.configmap | default "configmap.reloader.stakater.com/reload" }}: "foo-configmap"
 
-- For a `Deployment` called `foo` have a `Secret` called `foo-secret`. Then add this annotation to main metadata of  your `Deployment`
-  secret.reloader.stakater.com/reload: "foo-secret"
+- For a `Deployment` called `foo` have a `Secret` called `foo-secret`. Then add this annotation to main metadata of your `Deployment`
+  {{ .Values.reloader.custom_annotations.secret | default "secret.reloader.stakater.com/reload" }}: "foo-secret"
 
 - After successful installation, your pods will get rolling updates when a change in data of configmap or secret will happen.

deployments/kubernetes/chart/reloader/templates/_helpers.tpl

@@ -12,15 +12,37 @@ Create a default fully qualified app name.
 We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
 */}}
 {{- define "reloader-fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
 {{- $name := default .Chart.Name .Values.nameOverride -}}
 {{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
+{{- end -}}
 
 {{- define "reloader-labels.chart" -}}
 app: {{ template "reloader-fullname" . }}
 chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
 release: {{ .Release.Name | quote }}
 heritage: {{ .Release.Service | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service | quote }}
+{{- end -}}
+
+{{/*
+Create pod anti affinity labels
+*/}}
+{{- define "reloader-podAntiAffinity" -}}
+podAntiAffinity:
+  preferredDuringSchedulingIgnoredDuringExecution:
+  - weight: 100
+    podAffinityTerm:
+      labelSelector:
+        matchExpressions:
+        - key: app
+          operator: In
+          values:
+          - {{ template "reloader-fullname" . }}
+      topologyKey: "kubernetes.io/hostname"
 {{- end -}}
 
 {{/*
@@ -33,3 +55,11 @@ Create the name of the service account to use
     {{ default "default" .Values.reloader.serviceAccount.name }}
 {{- end -}}
 {{- end -}}
+
+{{/*
+Create the annotations to support helm3
+*/}}
+{{- define "reloader-helm3.annotations" -}}
+meta.helm.sh/release-namespace: {{ .Release.Namespace | quote }}
+meta.helm.sh/release-name: {{ .Release.Name | quote }}
+{{- end -}}

deployments/kubernetes/chart/reloader/templates/clusterrole.yaml

@@ -1,7 +1,13 @@
 {{- if and .Values.reloader.watchGlobally (.Values.reloader.rbac.enabled) }}
+{{- if  (.Capabilities.APIVersions.Has "rbac.authorization.k8s.io/v1") }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{ else }}
 apiVersion: rbac.authorization.k8s.io/v1beta1
+{{- end }}
 kind: ClusterRole
 metadata:
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
   labels:
 {{ include "reloader-labels.chart" . | indent 4 }}
 {{- if .Values.reloader.rbac.labels }}
@@ -11,7 +17,7 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-fullname" . }}-role
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 rules:
   - apiGroups:
       - ""
@@ -26,7 +32,15 @@ rules:
       - list
       - get
       - watch
-{{- if or (.Capabilities.APIVersions.Has "apps.openshift.io/v1") (.Values.isOpenshift) }}
+{{- if .Values.reloader.namespaceSelector }}
+  - apiGroups:
+      - ""
+    resources:
+      - namespaces
+    verbs:
+      - get         
+{{- end }}      
+{{- if and (.Capabilities.APIVersions.Has "apps.openshift.io/v1") (.Values.reloader.isOpenshift) }}
   - apiGroups:
       - "apps.openshift.io"
       - ""
@@ -37,6 +51,18 @@ rules:
       - get
       - update
       - patch
+{{- end }}
+{{- if and (.Capabilities.APIVersions.Has "argoproj.io/v1alpha1") (.Values.reloader.isArgoRollouts) }}
+  - apiGroups:
+      - "argoproj.io"
+      - ""
+    resources:
+      - rollouts
+    verbs:
+      - list
+      - get
+      - update
+      - patch
 {{- end }}
   - apiGroups:
       - "apps"
@@ -59,4 +85,21 @@ rules:
       - get
       - update
       - patch
+{{- if .Values.reloader.enableHA }}
+  - apiGroups:
+      - "coordination.k8s.io"
+    resources:
+      - leases
+    verbs:
+      - create
+      - get
+      - update
+{{- end}}
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch
 {{- end }}

deployments/kubernetes/chart/reloader/templates/clusterrolebinding.yaml

@@ -1,7 +1,13 @@
 {{- if and .Values.reloader.watchGlobally (.Values.reloader.rbac.enabled) }}
+{{- if  (.Capabilities.APIVersions.Has "rbac.authorization.k8s.io/v1") }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{ else }}
 apiVersion: rbac.authorization.k8s.io/v1beta1
+{{- end }}
 kind: ClusterRoleBinding
 metadata:
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
   labels:
 {{ include "reloader-labels.chart" . | indent 4 }}
 {{- if .Values.reloader.rbac.labels }}
@@ -11,7 +17,7 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-fullname" . }}-role-binding
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole
@@ -19,5 +25,5 @@ roleRef:
 subjects:
   - kind: ServiceAccount
     name: {{ template "reloader-serviceAccountName" . }}
-    namespace: {{ .Release.Namespace }}
+    namespace: {{ .Values.namespace | default .Release.Namespace }}
 {{- end }}

deployments/kubernetes/chart/reloader/templates/deployment.yaml

@@ -1,8 +1,9 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
-{{- if .Values.reloader.deployment.annotations }}
   annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
+{{- if .Values.reloader.deployment.annotations }}
 {{ toYaml .Values.reloader.deployment.annotations | indent 4 }}
 {{- end }}
   labels:
@@ -14,8 +15,13 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-fullname" . }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 spec:
+{{- if not (.Values.reloader.enableHA) }}
   replicas: 1
+{{- else }}
+  replicas: {{ .Values.reloader.deployment.replicas }}
+{{- end}}
   revisionHistoryLimit: 2
   selector:
     matchLabels:
@@ -26,6 +32,10 @@ spec:
 {{- end }}
   template:
     metadata:
+{{- if .Values.reloader.deployment.pod.annotations }}
+      annotations:
+{{ toYaml .Values.reloader.deployment.pod.annotations | indent 8 }}
+{{- end }}
       labels:
 {{ include "reloader-labels.chart" . | indent 8 }}
 {{- if .Values.reloader.deployment.labels }}
@@ -35,20 +45,34 @@ spec:
 {{ toYaml .Values.reloader.matchLabels | indent 8 }}
 {{- end }}
     spec:
+      {{- with .Values.reloader.deployment.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- if .Values.reloader.deployment.nodeSelector }}
       nodeSelector:
 {{ toYaml .Values.reloader.deployment.nodeSelector | indent 8 }}
       {{- end }}
-      {{- if .Values.reloader.deployment.affinity }}
+      {{- if or (.Values.reloader.deployment.affinity) (.Values.reloader.enableHA) }}
       affinity:
+      {{- if .Values.reloader.deployment.affinity }}
 {{ toYaml .Values.reloader.deployment.affinity | indent 8 }}
+      {{- end}}
+{{ include "reloader-podAntiAffinity" . | indent 8 }}
       {{- end }}
       {{- if .Values.reloader.deployment.tolerations }}
       tolerations:
 {{ toYaml .Values.reloader.deployment.tolerations | indent 8 }}
+      {{- end }}
+      {{- if .Values.reloader.deployment.priorityClassName }}
+      priorityClassName: {{ .Values.reloader.deployment.priorityClassName }}
       {{- end }}
       containers:
-      - env:
+      - image: "{{ .Values.reloader.deployment.image.name }}:{{ .Values.reloader.deployment.image.tag }}"
+        imagePullPolicy: {{ .Values.reloader.deployment.image.pullPolicy }}
+        name: {{ template "reloader-fullname" . }}
+      {{- if or (.Values.reloader.deployment.env.open) (.Values.reloader.deployment.env.secret) (.Values.reloader.deployment.env.field) (.Values.reloader.deployment.env.existing) (eq .Values.reloader.watchGlobally false) (.Values.reloader.enableHA)}}
+        env:
       {{- range $name, $value := .Values.reloader.deployment.env.open }}
       {{- if not (empty $value) }}
         - name: {{ $name | quote }}
@@ -65,6 +89,17 @@ spec:
               key: {{ $name | quote }}
       {{- end }}
       {{- end }}
+      {{- range $secret, $values := .Values.reloader.deployment.env.existing }}
+      {{- range $name, $key := $values }}
+      {{- if not ( empty $name) }}
+        - name: {{ $name | quote }}
+          valueFrom:
+            secretKeyRef:
+              name: {{ $secret | quote }}
+              key: {{ $key | quote }}
+      {{- end }}
+      {{- end }}
+      {{- end }}
       {{- range $name, $value := .Values.reloader.deployment.env.field }}
       {{- if not ( empty $value) }}
         - name: {{ $name | quote }}
@@ -79,37 +114,101 @@ spec:
             fieldRef:
               fieldPath: metadata.namespace
       {{- end }}
-        image: "{{ .Values.reloader.deployment.image.name }}:{{ .Values.reloader.deployment.image.tag }}"
-        imagePullPolicy: {{ .Values.reloader.deployment.image.pullPolicy }}
-        name: {{ template "reloader-fullname" . }}
+      {{- if .Values.reloader.enableHA }}
+        - name: POD_NAME
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.name
+        - name: POD_NAMESPACE
+          valueFrom:
+            fieldRef:
+              fieldPath: metadata.namespace
+      {{- end }}
+      {{- end }}
+
+        ports:
+        - name: http
+          containerPort: 9091
+        - name: metrics
+          containerPort: 9090
+        livenessProbe:
+          httpGet:
+            path: /live
+            port: http
+          timeoutSeconds: {{ .Values.reloader.deployment.livenessProbe.timeoutSeconds | default "5" }}
+          failureThreshold: {{ .Values.reloader.deployment.livenessProbe.failureThreshold | default "5" }}
+          periodSeconds: {{ .Values.reloader.deployment.livenessProbe.periodSeconds | default "10" }}
+          successThreshold: {{ .Values.reloader.deployment.livenessProbe.successThreshold | default "1" }}
+        readinessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          timeoutSeconds: {{ .Values.reloader.deployment.readinessProbe.timeoutSeconds | default "5" }}
+          failureThreshold: {{ .Values.reloader.deployment.readinessProbe.failureThreshold | default "5" }}
+          periodSeconds: {{ .Values.reloader.deployment.readinessProbe.periodSeconds | default "10" }}
+          successThreshold: {{ .Values.reloader.deployment.readinessProbe.successThreshold | default "1" }}
+
+      {{- with .Values.reloader.deployment.containerSecurityContext }}
+        securityContext: {{ toYaml . | nindent 10 }}
+      {{- end }}
+
       {{- if eq .Values.reloader.readOnlyRootFileSystem true }}
         volumeMounts:
           - mountPath: /tmp/
             name: tmp-volume
       {{- end }}
+      {{- if or (.Values.reloader.logFormat) (.Values.reloader.ignoreSecrets) (.Values.reloader.ignoreNamespaces) (.Values.reloader.namespaceSelector) (.Values.reloader.ignoreConfigMaps) (.Values.reloader.custom_annotations) (eq .Values.reloader.isArgoRollouts true) (eq .Values.reloader.reloadOnCreate true) (ne .Values.reloader.reloadStrategy "default") (.Values.reloader.enableHA)}}
         args:
+          {{- if .Values.reloader.logFormat }}
+          - "--log-format={{ .Values.reloader.logFormat }}"
+          {{- end }}
           {{- if .Values.reloader.ignoreSecrets }}
           - "--resources-to-ignore=secrets"
           {{- end }}
-          {{- if eq .Values.reloader.ignoreConfigMaps true }}
+          {{- if .Values.reloader.ignoreConfigMaps }}
           - "--resources-to-ignore=configMaps"
           {{- end }}
-
+          {{- if .Values.reloader.ignoreNamespaces }}
+          - "--namespaces-to-ignore={{ .Values.reloader.ignoreNamespaces }}"
+          {{- end }}
+          {{- if .Values.reloader.namespaceSelector }}
+          - "--namespace-selector={{ .Values.reloader.namespaceSelector }}"
+          {{- end }}          
           {{- if .Values.reloader.custom_annotations }}
             {{- if .Values.reloader.custom_annotations.configmap }}
-            - "--configmap-annotation"
-            - "{{ .Values.reloader.custom_annotations.configmap }}"
+          - "--configmap-annotation"
+          - "{{ .Values.reloader.custom_annotations.configmap }}"
             {{- end }}
             {{- if .Values.reloader.custom_annotations.secret }}
-            - "--secret-annotation"
-            - "{{ .Values.reloader.custom_annotations.secret }}"
+          - "--secret-annotation"
+          - "{{ .Values.reloader.custom_annotations.secret }}"
             {{- end }}
             {{- if .Values.reloader.custom_annotations.auto }}
-            - "--auto-annotation"
-            - "{{ .Values.reloader.custom_annotations.auto }}"
+          - "--auto-annotation"
+          - "{{ .Values.reloader.custom_annotations.auto }}"
+            {{- end }}
+            {{- if .Values.reloader.custom_annotations.search }}
+          - "--auto-search-annotation"
+          - "{{ .Values.reloader.custom_annotations.search }}"
+            {{- end }}
+            {{- if .Values.reloader.custom_annotations.match }}
+          - "--search-match-annotation"
+          - "{{ .Values.reloader.custom_annotations.match }}"
             {{- end }}
           {{- end }}
-
+          {{- if eq .Values.reloader.isArgoRollouts true }}
+          - "--is-Argo-Rollouts={{ .Values.reloader.isArgoRollouts }}"
+          {{- end }}
+          {{- if eq .Values.reloader.reloadOnCreate true }}
+          - "--reload-on-create={{ .Values.reloader.reloadOnCreate }}"
+          {{- end }}
+          {{- if ne .Values.reloader.reloadStrategy "default" }}
+          - "--reload-strategy={{ .Values.reloader.reloadStrategy }}"
+          {{- end }}
+          {{- if or (gt .Values.reloader.deployment.replicas 1.0) (.Values.reloader.enableHA) }}
+          - "--enable-ha=true"
+          {{- end}}
+      {{- end }}
       {{- if .Values.reloader.deployment.resources }}
         resources:
 {{ toYaml .Values.reloader.deployment.resources | indent 10 }}
@@ -118,6 +217,9 @@ spec:
       securityContext: {{ toYaml .Values.reloader.deployment.securityContext | nindent 8 }}
 {{- end }}
       serviceAccountName: {{ template "reloader-serviceAccountName" . }}
+{{- if hasKey .Values.reloader.deployment "automountServiceAccountToken" }}
+      automountServiceAccountToken: {{ .Values.reloader.deployment.automountServiceAccountToken }}
+{{- end }}
     {{- if eq .Values.reloader.readOnlyRootFileSystem true }}
       volumes:
         - emptyDir: {}

deployments/kubernetes/chart/reloader/templates/poddisruptionbudget.yaml

@@ -0,0 +1,11 @@
+{{- if .Values.reloader.podDisruptionBudget.enabled }}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ template "reloader-fullname" . }}
+spec:
+  minAvailable: {{ .Values.reloader.podDisruptionBudget.minAvailable }}
+  selector:
+    matchLabels:
+      app: {{ template "reloader-fullname" . }}
+{{- end }}

deployments/kubernetes/chart/reloader/templates/podmonitor.yaml

@@ -0,0 +1,31 @@
+{{- if ( .Values.reloader.podMonitor.enabled ) }}
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  labels:
+{{ include "reloader-labels.chart" . | indent 4 }}
+{{- if .Values.reloader.podMonitor.labels }}
+{{ toYaml .Values.reloader.podMonitor.labels | indent 4}}
+{{- end }}
+  name: {{ template "reloader-fullname" . }}
+{{- if .Values.reloader.podMonitor.namespace }}
+  namespace: {{ .Values.reloader.podMonitor.namespace }}
+{{- end }}
+spec:
+  podMetricsEndpoints:
+  - port: http
+    path: "/metrics"
+{{- if .Values.reloader.podMonitor.interval }}
+    interval: {{ .Values.reloader.podMonitor.interval }}
+{{- end }}
+{{- if .Values.reloader.podMonitor.timeout }}
+    scrapeTimeout: {{ .Values.reloader.podMonitor.timeout }}
+{{- end }}
+  jobLabel: {{ template "reloader-fullname" . }}
+  namespaceSelector:
+    matchNames:
+    - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{ include "reloader-labels.chart" . | nindent 6 }}
+{{- end }}

deployments/kubernetes/chart/reloader/templates/role.yaml

@@ -1,7 +1,13 @@
 {{- if and (not (.Values.reloader.watchGlobally)) (.Values.reloader.rbac.enabled) }}
+{{- if  (.Capabilities.APIVersions.Has "rbac.authorization.k8s.io/v1") }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{ else }}
 apiVersion: rbac.authorization.k8s.io/v1beta1
+{{- end }}
 kind: Role
 metadata:
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
   labels:
 {{ include "reloader-labels.chart" . | indent 4 }}
 {{- if .Values.reloader.rbac.labels }}
@@ -11,7 +17,7 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-fullname" . }}-role
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 rules:
   - apiGroups:
       - ""
@@ -26,7 +32,7 @@ rules:
       - list
       - get
       - watch
-{{- if or (.Capabilities.APIVersions.Has "apps.openshift.io/v1") (.Values.isOpenshift) }}
+{{- if and (.Capabilities.APIVersions.Has "apps.openshift.io/v1") (.Values.reloader.isOpenshift) }}
   - apiGroups:
       - "apps.openshift.io"
       - ""
@@ -37,6 +43,18 @@ rules:
       - get
       - update
       - patch
+{{- end }}
+{{- if and (.Capabilities.APIVersions.Has "argoproj.io/v1alpha1") (.Values.reloader.isArgoRollouts) }}
+  - apiGroups:
+      - "argoproj.io"
+      - ""
+    resources:
+      - rollouts
+    verbs:
+      - list
+      - get
+      - update
+      - patch
 {{- end }}
   - apiGroups:
       - "apps"
@@ -59,4 +77,21 @@ rules:
       - get
       - update
       - patch
+{{- if .Values.reloader.enableHA }}
+  - apiGroups:
+      - "coordination.k8s.io"
+    resources:
+      - leases
+    verbs:
+      - create
+      - get
+      - update
+{{- end}}
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch
 {{- end }}

deployments/kubernetes/chart/reloader/templates/rolebinding.yaml

@@ -1,8 +1,14 @@
 {{- if and (not (.Values.reloader.watchGlobally)) (.Values.reloader.rbac.enabled) }}
+{{- if  (.Capabilities.APIVersions.Has "rbac.authorization.k8s.io/v1") }}
+apiVersion: rbac.authorization.k8s.io/v1
+{{ else }}
 apiVersion: rbac.authorization.k8s.io/v1beta1
+{{- end }}
 kind: RoleBinding
 metadata:
-  labels: 
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
+  labels:
 {{ include "reloader-labels.chart" . | indent 4 }}
 {{- if .Values.reloader.rbac.labels }}
 {{ toYaml .Values.reloader.rbac.labels | indent 4 }}
@@ -11,7 +17,7 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-fullname" . }}-role-binding
-  namespace: {{ .Release.Namespace }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: Role
@@ -19,5 +25,5 @@ roleRef:
 subjects:
   - kind: ServiceAccount
     name: {{ template "reloader-serviceAccountName" . }}
-    namespace: {{ .Release.Namespace }}
+    namespace: {{ .Values.namespace | default .Release.Namespace }}
 {{- end }}

deployments/kubernetes/chart/reloader/templates/secret.yaml

@@ -0,0 +1,21 @@
+{{- if .Values.reloader.deployment.env.secret -}}
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ template "reloader-fullname" . }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
+type: Opaque
+data:
+  {{ if .Values.reloader.deployment.env.secret.ALERT_ON_RELOAD -}}
+  ALERT_ON_RELOAD: {{ .Values.reloader.deployment.env.secret.ALERT_ON_RELOAD | b64enc | quote }}
+  {{ end }}
+  {{- if .Values.reloader.deployment.env.secret.ALERT_SINK -}}
+  ALERT_SINK: {{ .Values.reloader.deployment.env.secret.ALERT_SINK | b64enc | quote }}
+  {{ end }}
+  {{- if .Values.reloader.deployment.env.secret.ALERT_WEBHOOK_URL -}}
+  ALERT_WEBHOOK_URL: {{ .Values.reloader.deployment.env.secret.ALERT_WEBHOOK_URL | b64enc | quote }}
+  {{ end }}
+  {{- if .Values.reloader.deployment.env.secret.ALERT_ADDITIONAL_INFO -}}
+  ALERT_ADDITIONAL_INFO: {{ .Values.reloader.deployment.env.secret.ALERT_ADDITIONAL_INFO | b64enc | quote }}
+  {{ end }}
+{{ end }}

deployments/kubernetes/chart/reloader/templates/service.yaml

@@ -0,0 +1,30 @@
+{{- if .Values.reloader.service }}
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
+{{- if .Values.reloader.service.annotations }}
+{{ toYaml .Values.reloader.service.annotations | indent 4 }}
+{{- end }}
+  labels:
+{{ include "reloader-labels.chart" . | indent 4 }}
+{{- if .Values.reloader.service.labels }}
+{{ toYaml .Values.reloader.service.labels | indent 4 }}
+{{- end }}
+  name: {{ template "reloader-fullname" . }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
+spec:
+  selector:
+{{- if .Values.reloader.deployment.labels }}
+{{ toYaml .Values.reloader.deployment.labels | indent 4 }}
+{{- end }}
+{{- if .Values.reloader.matchLabels }}
+{{ toYaml .Values.reloader.matchLabels | indent 4 }}
+{{- end }}
+  ports:
+  - port: {{ .Values.reloader.service.port }}
+    name: http
+    protocol: TCP
+    targetPort: http
+{{- end }}

deployments/kubernetes/chart/reloader/templates/serviceaccount.yaml

@@ -4,7 +4,15 @@ kind: ServiceAccount
 {{- if .Values.global.imagePullSecrets }}
 imagePullSecrets: {{ toYaml .Values.global.imagePullSecrets | nindent 2 }}
 {{- end }}
+{{- if hasKey .Values.reloader.serviceAccount "automountServiceAccountToken" }}
+automountServiceAccountToken: {{ .Values.reloader.serviceAccount.automountServiceAccountToken }}
+{{- end }}
 metadata:
+  annotations:
+{{ include "reloader-helm3.annotations" . | indent 4 }}
+{{- if .Values.reloader.serviceAccount.annotations }}
+{{ toYaml .Values.reloader.serviceAccount.annotations | indent 4 }}
+{{- end }}
   labels:
 {{ include "reloader-labels.chart" . | indent 4 }}
 {{- if .Values.reloader.serviceAccount.labels }}
@@ -14,4 +22,5 @@ metadata:
 {{ toYaml .Values.reloader.matchLabels | indent 4 }}
 {{- end }}
   name: {{ template "reloader-serviceAccountName" . }}
+  namespace: {{ .Values.namespace | default .Release.Namespace }}
 {{- end }}

deployments/kubernetes/chart/reloader/templates/servicemonitor.yaml

@@ -0,0 +1,31 @@
+{{- if and ( .Capabilities.APIVersions.Has "monitoring.coreos.com/v1" ) ( .Values.reloader.serviceMonitor.enabled ) }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+{{ include "reloader-labels.chart" . | indent 4 }}
+{{- if .Values.reloader.serviceMonitor.labels }}
+{{ toYaml .Values.reloader.serviceMonitor.labels | indent 4}}
+{{- end }}
+  name: {{ template "reloader-fullname" . }}
+{{- if .Values.reloader.serviceMonitor.namespace }}
+  namespace: {{ .Values.reloader.serviceMonitor.namespace }}
+{{- end }}
+spec:
+  endpoints:
+  - targetPort: http
+    path: "/metrics"
+{{- if .Values.reloader.serviceMonitor.interval }}
+    interval: {{ .Values.reloader.serviceMonitor.interval }}
+{{- end }}
+{{- if .Values.reloader.serviceMonitor.timeout }}
+    scrapeTimeout: {{ .Values.reloader.serviceMonitor.timeout }}
+{{- end }}
+  jobLabel: {{ template "reloader-fullname" . }}
+  namespaceSelector:
+    matchNames:
+    - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{ include "reloader-labels.chart" . | nindent 6 }}
+{{- end }}

deployments/kubernetes/chart/reloader/values.schema.json

@@ -0,0 +1,19 @@
+{
+  "$schema": "http://json-schema.org/schema#",
+  "type": "object",
+  "properties": {
+    "reloader": {
+      "type": "object",
+      "properties": {
+        "reloadStrategy": {
+          "type": "string",
+          "enum": [
+            "default",
+            "env-vars",
+            "annotations"
+          ]
+        }
+      }
+    }
+  }
+}

deployments/kubernetes/chart/reloader/values.yaml

@@ -9,14 +9,26 @@ kubernetes:
   host: https://kubernetes.default
 
 reloader:
+  isArgoRollouts: false
   isOpenshift: false
   ignoreSecrets: false
   ignoreConfigMaps: false
+  reloadOnCreate: false
+  reloadStrategy: default # Set to default, env-vars or annotations
+  ignoreNamespaces: "" # Comma separated list of namespaces to ignore
+  namespaceSelector: "" # Comma separated list of 'key:value' labels for namespaces selection
+  logFormat: "" #json
   watchGlobally: true
+  # Set to true to enable leadership election allowing you to run multiple replicas
+  enableHA: false
   # Set to true if you have a pod security policy that enforces readOnlyRootFilesystem
   readOnlyRootFileSystem: false
+  legacy:
+    rbac: false
   matchLabels: {}
   deployment:
+    # If you wish to run multiple replicas set reloader.enableHA = true
+    replicas: 1
     nodeSelector:
     # cloud.google.com/gke-nodepool: default-pool
 
@@ -31,6 +43,17 @@ reloader:
     #             operator: "Exists"
     affinity: {}
 
+    securityContext:
+      runAsNonRoot: true
+      runAsUser: 65534
+
+    containerSecurityContext: {}
+      # capabilities:
+      #   drop:
+      #     - ALL
+      # allowPrivilegeEscalation: false
+      # readOnlyRootFilesystem: true
+
     # A list of tolerations to be applied to the Deployment.
     # Example:
     #   tolerations:
@@ -43,10 +66,10 @@ reloader:
     labels:
       provider: stakater
       group: com.stakater.platform
-      version: v0.0.43
+      version: v1.0.1
     image:
       name: stakater/reloader
-      tag: "v0.0.43"
+      tag: v1.0.1
       pullPolicy: IfNotPresent
     # Support for extra environment variables.
     env:
@@ -54,8 +77,33 @@ reloader:
       open:
       # secret supports Key value pair as environment variables. It gets the values based on keys from default reloader secret if any.
       secret:
+      #  ALERT_ON_RELOAD: <"true"|"false">
+      #  ALERT_SINK: <"slack"> # By default it will be a raw text based webhook
+      #  ALERT_WEBHOOK_URL: <"webhook_url">
+      #  ALERT_ADDITIONAL_INFO: <"Additional Info like Cluster Name if needed">
       # field supports Key value pair as environment variables. It gets the values from other fields of pod.
       field:
+      # existing secret, you can specify multiple existing secrets, for each
+      # specify the env var name followed by the key in existing secret that
+      # will be used to populate the env var
+      existing:
+      #  existing_secret_name:
+      #    ALERT_ON_RELOAD: alert_on_reload_key
+      #    ALERT_SINK: alert_sink_key
+      #    ALERT_WEBHOOK_URL: alert_webhook_key
+      #    ALERT_ADDITIONAL_INFO: alert_additional_info_key
+
+    # Liveness and readiness probe timeout values.
+    livenessProbe: {}
+    #  timeoutSeconds: 5
+    #  failureThreshold: 5
+    #  periodSeconds: 10
+    #  successThreshold: 1
+    readinessProbe: {}
+    #  timeoutSeconds: 15
+    #  failureThreshold: 5
+    #  periodSeconds: 10
+    #  successThreshold: 1
 
     # Specify resource requests/limits for the deployment.
     # Example:
@@ -67,6 +115,16 @@ reloader:
     #     cpu: "10m"
     #     memory: "128Mi"
     resources: {}
+    pod:
+      annotations: {}
+    priorityClassName: ""
+    # imagePullSecrets:
+    #   - name: myregistrykey
+
+  service: {}
+    # labels: {}
+    # annotations: {}
+    # port: 9090
 
   rbac:
     enabled: true
@@ -76,6 +134,7 @@ reloader:
     # Specifies whether a ServiceAccount should be created
     create: true
     labels: {}
+    annotations: {}
     # The name of the ServiceAccount to use.
     # If not set and create is true, a name is generated using the fullname template
     name: 
@@ -85,3 +144,32 @@ reloader:
   #     configmap: "my.company.com/configmap"
   #     secret: "my.company.com/secret"
   custom_annotations: {}
+
+  serviceMonitor:
+    # Deprecated: Service monitor will be removed in future releases of reloader in favour of Pod monitor
+    # Enabling this requires service to be enabled as well, or no endpoints will be found
+    enabled: false
+    # Set the namespace the ServiceMonitor should be deployed
+    # namespace: monitoring
+    # Set how frequently Prometheus should scrape
+    # interval: 30s
+    # Set labels for the ServiceMonitor, use this to define your scrape label for Prometheus Operator
+    # labels:
+    # Set timeout for scrape
+    # timeout: 10s
+
+  podMonitor:
+    enabled: false
+    # Set the namespace the podMonitor should be deployed
+    # namespace: monitoring
+    # Set how frequently Prometheus should scrape
+    # interval: 30s
+    # Set labels for the podMonitor, use this to define your scrape label for Prometheus Operator
+    # labels:
+    # Set timeout for scrape
+    # timeout: 10s
+
+  podDisruptionBudget:
+    enabled: false
+    # Set the minimum available replicas
+    # minAvailable: 1

deployments/kubernetes/manifests/clusterrole.yaml

@@ -1,14 +1,18 @@
 ---
 # Source: reloader/templates/clusterrole.yaml
+apiVersion: rbac.authorization.k8s.io/v1
 
-apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader-role
   namespace: default
 rules:
@@ -42,4 +46,10 @@ rules:
       - get
       - update
       - patch
-
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch

deployments/kubernetes/manifests/clusterrolebinding.yaml

@@ -1,14 +1,18 @@
 ---
 # Source: reloader/templates/clusterrolebinding.yaml
+apiVersion: rbac.authorization.k8s.io/v1
 
-apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader-role-binding
   namespace: default
 roleRef:
@@ -19,4 +23,3 @@ subjects:
   - kind: ServiceAccount
     name: reloader-reloader
     namespace: default
-

deployments/kubernetes/manifests/deployment.yaml

@@ -3,16 +3,20 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
     group: com.stakater.platform
     provider: stakater
-    version: v0.0.43
-    
+    version: v1.0.1
   name: reloader-reloader
+  namespace: default
 spec:
   replicas: 1
   revisionHistoryLimit: 2
@@ -24,19 +28,41 @@ spec:
     metadata:
       labels:
         app: reloader-reloader
-        chart: "reloader-v0.0.43"
+        chart: "reloader-v1.0.1"
         release: "reloader"
-        heritage: "Tiller"
+        heritage: "Helm"
+        app.kubernetes.io/managed-by: "Helm"
         group: com.stakater.platform
         provider: stakater
-        version: v0.0.43
-        
+        version: v1.0.1
     spec:
       containers:
-      - env:
-        image: "stakater/reloader:v0.0.43"
+      - image: "stakater/reloader:v1.0.1"
         imagePullPolicy: IfNotPresent
         name: reloader-reloader
-        args:
-      serviceAccountName: reloader-reloader
 
+        ports:
+        - name: http
+          containerPort: 9091
+        - name: metrics
+          containerPort: 9090
+        livenessProbe:
+          httpGet:
+            path: /live
+            port: http
+          timeoutSeconds: 5
+          failureThreshold: 5
+          periodSeconds: 10
+          successThreshold: 1
+        readinessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          timeoutSeconds: 5
+          failureThreshold: 5
+          periodSeconds: 10
+          successThreshold: 1
+      securityContext: 
+        runAsNonRoot: true
+        runAsUser: 65534
+      serviceAccountName: reloader-reloader

deployments/kubernetes/manifests/podmonitor.yaml

@@ -0,0 +1,3 @@
+---
+# Source: reloader/templates/podmonitor.yaml
+

deployments/kubernetes/manifests/service.yaml

@@ -0,0 +1,4 @@
+---
+# Source: reloader/templates/service.yaml
+
+

deployments/kubernetes/manifests/serviceaccount.yaml

@@ -1,13 +1,16 @@
 ---
 # Source: reloader/templates/serviceaccount.yaml
-
 apiVersion: v1
 kind: ServiceAccount
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader
-
+  namespace: default

deployments/kubernetes/manifests/servicemonitor.yaml

@@ -0,0 +1,4 @@
+---
+# Source: reloader/templates/servicemonitor.yaml
+
+

deployments/kubernetes/reloader.yaml

@@ -1,60 +1,34 @@
 ---
-# Source: reloader/templates/role.yaml
-
-
----
-# Source: reloader/templates/deployment.yaml
-apiVersion: apps/v1
-kind: Deployment
+# Source: reloader/templates/serviceaccount.yaml
+apiVersion: v1
+kind: ServiceAccount
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
-    group: com.stakater.platform
-    provider: stakater
-    version: v0.0.43
-    
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader
-spec:
-  replicas: 1
-  revisionHistoryLimit: 2
-  selector:
-    matchLabels:
-      app: reloader-reloader
-      release: "reloader"
-  template:
-    metadata:
-      labels:
-        app: reloader-reloader
-        chart: "reloader-v0.0.43"
-        release: "reloader"
-        heritage: "Tiller"
-        group: com.stakater.platform
-        provider: stakater
-        version: v0.0.43
-        
-    spec:
-      containers:
-      - env:
-        image: "stakater/reloader:v0.0.43"
-        imagePullPolicy: IfNotPresent
-        name: reloader-reloader
-        args:
-      serviceAccountName: reloader-reloader
-
+  namespace: default
 ---
 # Source: reloader/templates/clusterrole.yaml
+apiVersion: rbac.authorization.k8s.io/v1
 
-apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRole
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader-role
   namespace: default
 rules:
@@ -88,22 +62,28 @@ rules:
       - get
       - update
       - patch
-
----
-# Source: reloader/templates/rolebinding.yaml
-
-
+  - apiGroups:
+      - ""
+    resources:
+      - events
+    verbs:
+      - create
+      - patch
 ---
 # Source: reloader/templates/clusterrolebinding.yaml
+apiVersion: rbac.authorization.k8s.io/v1
 
-apiVersion: rbac.authorization.k8s.io/v1beta1
 kind: ClusterRoleBinding
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
   name: reloader-reloader-role-binding
   namespace: default
 roleRef:
@@ -114,17 +94,71 @@ subjects:
   - kind: ServiceAccount
     name: reloader-reloader
     namespace: default
-
 ---
-# Source: reloader/templates/serviceaccount.yaml
-
-apiVersion: v1
-kind: ServiceAccount
+# Source: reloader/templates/deployment.yaml
+apiVersion: apps/v1
+kind: Deployment
 metadata:
+  annotations:
+    meta.helm.sh/release-namespace: "default"
+    meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-v0.0.43"
+    chart: "reloader-v1.0.1"
     release: "reloader"
-    heritage: "Tiller"
+    heritage: "Helm"
+    app.kubernetes.io/managed-by: "Helm"
+    group: com.stakater.platform
+    provider: stakater
+    version: v1.0.1
   name: reloader-reloader
+  namespace: default
+spec:
+  replicas: 1
+  revisionHistoryLimit: 2
+  selector:
+    matchLabels:
+      app: reloader-reloader
+      release: "reloader"
+  template:
+    metadata:
+      labels:
+        app: reloader-reloader
+        chart: "reloader-v1.0.1"
+        release: "reloader"
+        heritage: "Helm"
+        app.kubernetes.io/managed-by: "Helm"
+        group: com.stakater.platform
+        provider: stakater
+        version: v1.0.1
+    spec:
+      containers:
+      - image: "stakater/reloader:v1.0.1"
+        imagePullPolicy: IfNotPresent
+        name: reloader-reloader
 
+        ports:
+        - name: http
+          containerPort: 9091
+        - name: metrics
+          containerPort: 9090
+        livenessProbe:
+          httpGet:
+            path: /live
+            port: http
+          timeoutSeconds: 5
+          failureThreshold: 5
+          periodSeconds: 10
+          successThreshold: 1
+        readinessProbe:
+          httpGet:
+            path: /metrics
+            port: metrics
+          timeoutSeconds: 5
+          failureThreshold: 5
+          periodSeconds: 10
+          successThreshold: 1
+      securityContext: 
+        runAsNonRoot: true
+        runAsUser: 65534
+      serviceAccountName: reloader-reloader

deployments/kubernetes/templates/chart/values.yaml.tmpl

@@ -9,14 +9,22 @@ kubernetes:
   host: https://kubernetes.default
 
 reloader:
+  isArgoRollouts: false
   isOpenshift: false
   ignoreSecrets: false
   ignoreConfigMaps: false
+  reloadOnCreate: false
+  reloadStrategy: default # Set to default, env-vars or annotations
+  ignoreNamespaces: "" # Comma separated list of namespaces to ignore
+  logFormat: "" #json
   watchGlobally: true
   # Set to true if you have a pod security policy that enforces readOnlyRootFilesystem
   readOnlyRootFileSystem: false
+  legacy:
+    rbac: false
   matchLabels: {}
   deployment:
+    replicas: 1
     nodeSelector:
     # cloud.google.com/gke-nodepool: default-pool
 
@@ -31,6 +39,17 @@ reloader:
     #             operator: "Exists"
     affinity: {}
 
+    securityContext:
+      runAsNonRoot: true
+      runAsUser: 65534
+
+    containerSecurityContext: {}
+      # capabilities:
+      #   drop:
+      #     - ALL
+      # allowPrivilegeEscalation: false
+      # readOnlyRootFilesystem: true
+
     # A list of tolerations to be applied to the Deployment.
     # Example:
     #   tolerations:
@@ -67,6 +86,13 @@ reloader:
     #     cpu: "10m"
     #     memory: "128Mi"
     resources: {}
+    pod:
+      annotations: {}
+
+  service: {}
+    # labels: {}
+    # annotations: {}
+    # port: 9090
 
   rbac:
     enabled: true
@@ -76,6 +102,7 @@ reloader:
     # Specifies whether a ServiceAccount should be created
     create: true
     labels: {}
+    annotations: {}
     # The name of the ServiceAccount to use.
     # If not set and create is true, a name is generated using the fullname template
     name: 
@@ -85,3 +112,27 @@ reloader:
   #     configmap: "my.company.com/configmap"
   #     secret: "my.company.com/secret"
   custom_annotations: {}
+  serviceMonitor:
+    # enabling this requires service to be enabled as well, or no endpoints will be found
+    enabled: false
+    # Set the namespace the ServiceMonitor should be deployed
+    # namespace: monitoring
+    # Set how frequently Prometheus should scrape
+    # interval: 30s
+    # Set labels for the ServiceMonitor, use this to define your scrape label for Prometheus Operator
+    # labels:
+    # Set timeout for scrape
+    # timeout: 10s
+  
+
+  podMonitor:
+    # enabling this requires service to be enabled as well, or no endpoints will be found
+    enabled: false
+    # Set the namespace the podMonitor should be deployed
+    # namespace: monitoring
+    # Set how frequently Prometheus should scrape
+    # interval: 30s
+    # Set labels for the podMonitor, use this to define your scrape label for Prometheus Operator
+    # labels:
+    # Set timeout for scrape
+    # timeout: 10s

docs/Alerting.md

@@ -0,0 +1,12 @@
+# Alerting on Reload
+Reloader can alert when it triggers a rolling upgrade on Deployments or StatefulSets. Webhook notification alert would be sent to the configured webhook server with all the required information   
+
+#### Enabling the feature
+In-order to enable this feature, you need to update the reloader.env.secret section of values.yaml providing the information needed for alert. 
+<pre>      ALERT_ON_RELOAD: [ true/false ] Default: false 
+      ALERT_SINK: [ slack/webhook ] Default: webhook
+      ALERT_WEBHOOK_URL: Required if ALERT_ON_RELOAD is true
+      ALERT_ADDITIONAL_INFO: Any additional information to be added to alert
+
+#### Slack incoming-webhook creation docs
+https://api.slack.com/messaging/webhooks 

docs/Container Build.md

@@ -0,0 +1,41 @@
+
+# Container Build
+> **WARNING:** As a user of Reloader there is no need to build containers, these are freely available here: https://hub.docker.com/r/stakater/reloader/
+
+Multi-architecture approach is based on original work by @mdh02038: https://github.com/mdh02038/Reloader
+
+Images tested on linux/arm, linux/arm64 and linux/amd64.
+
+# Install Pre-Reqs
+The build environment requires the following packages (tested on Ubuntu 20.04):
+* golang
+* make
+* qemu (for arm, arm64 etc. emulation)
+* binfmt-support
+* Docker engine
+
+## Docker
+Follow instructions here: https://docs.docker.com/engine/install/ubuntu/#install-using-the-repository
+
+Once installed, enable the experimental CLI:
+```
+export DOCKER_CLI_EXPERIMENTAL=enabled
+```
+Login, to enable publishing of packages:
+```
+sudo docker login
+```
+## Remaining Pre-Reqs
+Remaining Pre-Reqs can be installed via:
+```
+sudo apt install golang make qemu-user-static binfmt-support -y
+```
+
+# Publish Multi-Architecture Image
+To build/ publish multi-arch Docker images clone repository and execute from repository root:
+```
+sudo make release-all
+```
+
+# Additional Links/ Info
+* *https://medium.com/@artur.klauser/building-multi-architecture-docker-images-with-buildx-27d80f7e2408

docs/Helm2-to-Helm3.md

@@ -0,0 +1,62 @@
+# Helm2 to Helm3 Migration
+
+Follow below mentioned instructions to migrate reloader from Helm2 to Helm3
+
+## Instrcutions:
+
+There are 3 steps involved in migrating the reloader from Helm2 to Helm3.
+
+### Step 1:
+Install the helm-2to3 plugin
+
+```bash
+helm3 plugin install https://github.com/helm/helm-2to3
+
+helm3 2to3 convert <release-name>
+
+helm3 2to3 cleanup --release-cleanup --skip-confirmation
+```
+
+### Step 2:
+Add the following Helm3 labels and annotations on reloader resources.
+
+Label:
+
+```yaml
+app.kubernetes.io/managed-by=Helm
+```
+Annotations:
+```yaml
+meta.helm.sh/release-name=<release-name>
+meta.helm.sh/release-namespace=<namespace>
+```
+
+For example, to label and annotate the ClusterRoleBinding and ClusterRole:
+
+```bash
+KIND=ClusterRoleBinding
+NAME=reloader-reloader-role-binding
+RELEASE=reloader
+NAMESPACE=kube-system
+kubectl annotate $KIND $NAME meta.helm.sh/release-name=$RELEASE
+kubectl annotate $KIND $NAME meta.helm.sh/release-namespace=$NAMESPACE
+kubectl label $KIND $NAME app.kubernetes.io/managed-by=Helm
+
+KIND=ClusterRole
+NAME=reloader-reloader-role
+RELEASE=reloader
+NAMESPACE=kube-system
+kubectl annotate $KIND $NAME meta.helm.sh/release-name=$RELEASE
+kubectl annotate $KIND $NAME meta.helm.sh/release-namespace=$NAMESPACE
+kubectl label $KIND $NAME app.kubernetes.io/managed-by=Helm
+```
+
+### Step 3:
+Upgrade to desired version
+```bash
+helm3 repo add stakater https://stakater.github.io/stakater-charts
+
+helm3 repo update
+
+helm3 upgrade <release-name> stakater/reloader --version=v0.0.72
+```

docs/How-it-works.md

@@ -37,7 +37,7 @@ metadata:
 ```
 <small>*the default annotation can be changed with the `--secret-annotation` flag</small>
 
-Above mentioned annotation are also work for `Daemonsets` and `Statefulsets`
+Above mentioned annotation are also work for `Daemonsets` `Statefulsets` and `Rollouts`
 
 ## How Rolling upgrade works?
 

docs/Reloader-vs-ConfigmapController.md

@@ -8,5 +8,5 @@ Reloader is inspired from [Configmapcontroller](https://github.com/fabric8io/con
 | Reloader can watch both `secrets` and `configmaps`.                                                                                                                                                                                                                                                    | ConfigmapController can only watch changes in `configmaps`. It cannot detect changes in other resources like `secrets`.                                                                                                                                        |
 | Reloader can perform rolling upgrades on `deployments` as well as on `statefulsets` and `daemonsets`                                                                                                                                                                                                   | ConfigmapController can only perform rolling upgrades on `deployments`. It currently does not support rolling upgrades on `statefulsets` and `daemonsets`                                                                                                          |
 | Reloader provides both unit test cases and end to end integration test cases for future updates. So one can make sure that new changes do not break any old functionality.                                                                                                                                               | Currently there are not any unit test cases or end to end integration test cases in configmap controller. It add difficulties for any additional updates in configmap controller and one can not know for sure whether new changes breaks any old functionality or not. |
-| Reloader uses SHA1 to encode the change in configmap or secret. It then saves the SHA1 value in `STAKATER_FOO_CONFIGMAP` or `STAKATER_FOO_SECRET` environment variable depending upon where the change has happened. The use of SHA1 provides a concise 40 characters encoded value that is very less pron to collision. | Configmap controller uses `FABRICB_FOO_REVISION` environment variable to store any change in configmap controller. It does not encode it or convert it in suitable hash value to avoid data pollution in deployment.                                               |
-| Reloader allows you to customize your own annotation (for both Secrets and Configmaps) using command line flags | Configmap controller restricts you to only their provided annotation |
+| Reloader uses SHA1 to encode the change in configmap or secret. It then saves the SHA1 value in `STAKATER_FOO_CONFIGMAP` or `STAKATER_FOO_SECRET` environment variable depending upon where the change has happened. The use of SHA1 provides a concise 40 characters encoded value that is very less prone to collision. | Configmap controller uses `FABRICB_FOO_REVISION` environment variable to store any change in configmap controller. It does not encode it or convert it in suitable hash value to avoid data pollution in deployment.                                               |
+| Reloader allows you to customize your own annotation (for both Secrets and Configmaps) using command line flags | Configmap controller restricts you to only their provided annotation |

docs/Reloader-with-Sealed-Secrets.md

@@ -8,4 +8,4 @@ Below are the steps to use reloader with Sealed Secrets.
 8. Install Reloader.
 9. Once everything is setup, update the original secret at client and encrypt it with kubeseal to see reloader working.
 10. Apply the updated sealed secret.
-11. Reloader will resatart the pod to use that updated secret.
+11. Reloader will restart the pod to use that updated secret.

docs/Verify-Reloader-Working.md

@@ -1,6 +1,6 @@
 # Verify Reloader's Working
 
-Reloader's working can be verified by two ways.
+Reloader's working can be verified by three ways.
 
 ## Verify from logs
 
@@ -49,3 +49,13 @@ After a change in `secret` or `configmap`. Run the below mentioned command and v
 ```bash
 kubectl get pods <pod name> -n <namespace name>
 ```
+
+## Verify from metrics
+Some metrics are exported to prometheus endpoint `/metrics` on port `9090`.
+
+When reloader is unable to reload, `reloader_reload_executed_total{success="false"}` metric gets incremented and when it reloads successfully, `reloader_reload_executed_total{success="true"}` gets incremented. You will be able to see the following metrics, with some other metrics, at `/metrics` endpoint.
+
+```
+reloader_reload_executed_total{success="false"} 15
+reloader_reload_executed_total{success="true"} 12
+```

docs/features.md

@@ -2,6 +2,7 @@
 
 These are the key features of Reloader:
 
-1. Restart pod in a depoloyment on change in linked/related configmap's or secret's
+1. Restart pod in a deployment on change in linked/related configmap's or secret's
 2. Restart pod in a daemonset on change in linked/related configmap's or secret's
 3. Restart pod in a statefulset on change in linked/related configmap's or secret's
+4. Restart pod in a rollout on change in linked/related configmap's or secret's

go.mod

@@ -1,29 +1,99 @@
 module github.com/stakater/Reloader
 
-go 1.13
+go 1.19
 
 require (
-	github.com/golang/groupcache v0.0.0-20191002201903-404acd9df4cc // indirect
-	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/onsi/ginkgo v1.10.2 // indirect
-	github.com/onsi/gomega v1.7.0 // indirect
-	github.com/openshift/api v3.9.1-0.20190923092516-169848dd8137+incompatible
-	github.com/openshift/client-go v0.0.0-20190923092832-6afefc9bb372
-	github.com/sirupsen/logrus v1.0.5
-	github.com/spf13/cobra v0.0.0-20160722081547-f62e98d28ab7
-	github.com/stretchr/testify v1.4.0 // indirect
-	gopkg.in/airbrake/gobrake.v2 v2.0.9 // indirect
-	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
-	gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2 // indirect
-	k8s.io/api v0.0.0-20190918155943-95b840bb6a1f
-	k8s.io/apimachinery v0.0.0-20191004115801-a2eda9f80ab8
-	k8s.io/client-go v0.0.0-20190918160344-1fbdaa4c8d90
+	github.com/argoproj/argo-rollouts v1.3.1
+	github.com/openshift/api v0.0.0-20210527122704-efd9d5958e01
+	github.com/openshift/client-go v0.0.0-20210521082421-73d9475a9142
+	github.com/parnurzeal/gorequest v0.2.16
+	github.com/prometheus/client_golang v1.12.2
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/cobra v1.5.0
+	k8s.io/api v0.24.2
+	k8s.io/apimachinery v0.24.2
+	k8s.io/client-go v0.24.2
+	k8s.io/kubectl v0.24.2
 )
 
-replace (
-	github.com/openshift/api => github.com/openshift/api v3.9.1-0.20190923092516-169848dd8137+incompatible // prebase-1.16
-	github.com/openshift/client-go => github.com/openshift/client-go v0.0.0-20190923092832-6afefc9bb372 // prebase-1.16
-	k8s.io/api => k8s.io/api v0.0.0-20191004120104-195af9ec3521 // release-1.16
-	k8s.io/apimachinery => k8s.io/apimachinery v0.0.0-20191004115801-a2eda9f80ab8 // kubernetes-1.16.0
-	k8s.io/client-go => k8s.io/client-go v0.0.0-20190918160344-1fbdaa4c8d90 // kubernetes-1.16.0
+require (
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.8.0 // indirect
+	github.com/evanphx/json-patch v5.6.0+incompatible // indirect
+	github.com/go-logr/logr v1.2.3 // indirect
+	github.com/go-openapi/jsonpointer v0.19.5 // indirect
+	github.com/go-openapi/jsonreference v0.20.0 // indirect
+	github.com/go-openapi/swag v0.21.1 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/google/gnostic v0.6.9 // indirect
+	github.com/google/go-cmp v0.5.8 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/imdario/mergo v0.3.13 // indirect
+	github.com/inconshreveable/mousetrap v1.0.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.36.0 // indirect
+	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	golang.org/x/net v0.0.0-20220906165146-f3363e06e74c // indirect
+	golang.org/x/oauth2 v0.0.0-20220630143837-2104d58473e0 // indirect
+	golang.org/x/sys v0.0.0-20220728004956-3c1f35247d10 // indirect
+	golang.org/x/term v0.0.0-20220526004731-065cf7ba2467 // indirect
+	golang.org/x/text v0.3.8 // indirect
+	golang.org/x/time v0.0.0-20220609170525-579cf78fd858 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
+	google.golang.org/protobuf v1.28.0 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+	k8s.io/klog/v2 v2.70.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20220627174259-011e075b9cb8 // indirect
+	k8s.io/utils v0.0.0-20220706174534-f6158b442e7c // indirect
+	moul.io/http2curl v1.0.0 // indirect
+	sigs.k8s.io/json v0.0.0-20220525155127-227cbc7cc124 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
+)
+
+// Replacements for argo-rollouts
+replace (
+	github.com/go-check/check => github.com/go-check/check v0.0.0-20180628173108-788fd7840127
+	github.com/grpc-ecosystem/grpc-gateway => github.com/grpc-ecosystem/grpc-gateway v1.16.0
+	k8s.io/api v0.0.0 => k8s.io/api v0.24.2
+	k8s.io/apiextensions-apiserver v0.0.0 => k8s.io/apiextensions-apiserver v0.24.2
+	k8s.io/apimachinery v0.0.0 => k8s.io/apimachinery v0.21.0-alpha.0
+	k8s.io/apiserver v0.0.0 => k8s.io/apiserver v0.24.2
+	k8s.io/cli-runtime v0.0.0 => k8s.io/cli-runtime v0.24.2
+	k8s.io/client-go v0.0.0 => k8s.io/client-go v0.24.2
+	k8s.io/cloud-provider v0.0.0 => k8s.io/cloud-provider v0.24.2
+	k8s.io/cluster-bootstrap v0.0.0 => k8s.io/cluster-bootstrap v0.24.2
+	k8s.io/code-generator v0.0.0 => k8s.io/code-generator v0.20.5-rc.0
+	k8s.io/component-base v0.0.0 => k8s.io/component-base v0.24.2
+	k8s.io/component-helpers v0.0.0 => k8s.io/component-helpers v0.24.2
+	k8s.io/controller-manager v0.0.0 => k8s.io/controller-manager v0.24.2
+	k8s.io/cri-api v0.0.0 => k8s.io/cri-api v0.20.5-rc.0
+	k8s.io/csi-translation-lib v0.0.0 => k8s.io/csi-translation-lib v0.24.2
+	k8s.io/kube-aggregator v0.0.0 => k8s.io/kube-aggregator v0.24.2
+	k8s.io/kube-controller-manager v0.0.0 => k8s.io/kube-controller-manager v0.24.2
+	k8s.io/kube-proxy v0.0.0 => k8s.io/kube-proxy v0.24.2
+	k8s.io/kube-scheduler v0.0.0 => k8s.io/kube-scheduler v0.24.2
+	k8s.io/kubectl v0.0.0 => k8s.io/kubectl v0.24.2
+	k8s.io/kubelet v0.0.0 => k8s.io/kubelet v0.24.2
+	k8s.io/legacy-cloud-providers v0.0.0 => k8s.io/legacy-cloud-providers v0.24.2
+	k8s.io/metrics v0.0.0 => k8s.io/metrics v0.24.2
+	k8s.io/mount-utils v0.0.0 => k8s.io/mount-utils v0.20.5-rc.0
+	k8s.io/sample-apiserver v0.0.0 => k8s.io/sample-apiserver v0.24.2
+	k8s.io/sample-cli-plugin v0.0.0 => k8s.io/sample-cli-plugin v0.24.2
+	k8s.io/sample-controller v0.0.0 => k8s.io/sample-controller v0.24.2
 )

internal/pkg/alerts/alert.go

@@ -0,0 +1,94 @@
+package alert
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/parnurzeal/gorequest"
+	"github.com/sirupsen/logrus"
+)
+
+// function to send alert msg to webhook service
+func SendWebhookAlert(msg string) {
+	webhook_url, ok := os.LookupEnv("ALERT_WEBHOOK_URL")
+	if !ok {
+		logrus.Error("ALERT_WEBHOOK_URL env variable not provided")
+		return
+	}
+	webhook_url = strings.TrimSpace(webhook_url)
+	alert_sink := os.Getenv("ALERT_SINK")
+	alert_sink = strings.ToLower(strings.TrimSpace(alert_sink))
+
+	// Provision to add Proxy to reach webhook server if required
+	webhook_proxy := os.Getenv("ALERT_WEBHOOK_PROXY")
+	webhook_proxy = strings.TrimSpace(webhook_proxy)
+
+	// Provision to add Additional information in the alert. e.g ClusterName
+	alert_additional_info, ok := os.LookupEnv("ALERT_ADDITIONAL_INFO")
+	if ok {
+		alert_additional_info = strings.TrimSpace(alert_additional_info)
+		msg = fmt.Sprintf("%s : %s", alert_additional_info, msg)
+	}
+
+	if alert_sink == "slack" {
+		sendSlackAlert(webhook_url, webhook_proxy, msg)
+	} else {
+		msg = strings.Replace(msg, "*", "", -1)
+		sendRawWebhookAlert(webhook_url, webhook_proxy, msg)
+	}
+}
+
+// function to handle server redirection
+func redirectPolicy(req gorequest.Request, via []gorequest.Request) error {
+	return fmt.Errorf("incorrect token (redirection)")
+}
+
+// function to send alert to slack
+func sendSlackAlert(webhookUrl string, proxy string, msg string) []error {
+	attachment := Attachment{
+		Text:       msg,
+		Color:      "good",
+		AuthorName: "Reloader",
+	}
+
+	payload := WebhookMessage{
+		Attachments: []Attachment{attachment},
+	}
+
+	request := gorequest.New().Proxy(proxy)
+	resp, _, err := request.
+		Post(webhookUrl).
+		RedirectPolicy(redirectPolicy).
+		Send(payload).
+		End()
+
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode >= 400 {
+		return []error{fmt.Errorf("error sending msg. status: %v", resp.Status)}
+	}
+
+	return nil
+}
+
+// function to send alert to webhook service as text
+func sendRawWebhookAlert(webhookUrl string, proxy string, msg string) []error {
+	request := gorequest.New().Proxy(proxy)
+	resp, _, err := request.
+		Post(webhookUrl).
+		Type("text").
+		RedirectPolicy(redirectPolicy).
+		Send(msg).
+		End()
+
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode >= 400 {
+		return []error{fmt.Errorf("error sending msg. status: %v", resp.Status)}
+	}
+
+	return nil
+}

internal/pkg/alerts/slack_alert.go

@@ -0,0 +1,61 @@
+package alert
+
+type WebhookMessage struct {
+	Username        string       `json:"username,omitempty"`
+	IconEmoji       string       `json:"icon_emoji,omitempty"`
+	IconURL         string       `json:"icon_url,omitempty"`
+	Channel         string       `json:"channel,omitempty"`
+	ThreadTimestamp string       `json:"thread_ts,omitempty"`
+	Text            string       `json:"text,omitempty"`
+	Attachments     []Attachment `json:"attachments,omitempty"`
+	Parse           string       `json:"parse,omitempty"`
+	ResponseType    string       `json:"response_type,omitempty"`
+	ReplaceOriginal bool         `json:"replace_original,omitempty"`
+	DeleteOriginal  bool         `json:"delete_original,omitempty"`
+	ReplyBroadcast  bool         `json:"reply_broadcast,omitempty"`
+}
+
+type Attachment struct {
+	Color    string `json:"color,omitempty"`
+	Fallback string `json:"fallback,omitempty"`
+
+	CallbackID string `json:"callback_id,omitempty"`
+	ID         int    `json:"id,omitempty"`
+
+	AuthorID      string `json:"author_id,omitempty"`
+	AuthorName    string `json:"author_name,omitempty"`
+	AuthorSubname string `json:"author_subname,omitempty"`
+	AuthorLink    string `json:"author_link,omitempty"`
+	AuthorIcon    string `json:"author_icon,omitempty"`
+
+	Title     string `json:"title,omitempty"`
+	TitleLink string `json:"title_link,omitempty"`
+	Pretext   string `json:"pretext,omitempty"`
+	Text      string `json:"text,omitempty"`
+
+	ImageURL string `json:"image_url,omitempty"`
+	ThumbURL string `json:"thumb_url,omitempty"`
+
+	ServiceName string `json:"service_name,omitempty"`
+	ServiceIcon string `json:"service_icon,omitempty"`
+	FromURL     string `json:"from_url,omitempty"`
+	OriginalURL string `json:"original_url,omitempty"`
+
+	MarkdownIn []string `json:"mrkdwn_in,omitempty"`
+
+	Footer     string `json:"footer,omitempty"`
+	FooterIcon string `json:"footer_icon,omitempty"`
+}
+
+type Field struct {
+	Title string `json:"title"`
+	Value string `json:"value"`
+	Short bool   `json:"short"`
+}
+
+type Action struct {
+	Type  string `json:"type"`
+	Text  string `json:"text"`
+	Url   string `json:"url"`
+	Style string `json:"style"`
+}

internal/pkg/callbacks/rolling_upgrade.go

@@ -1,34 +1,45 @@
 package callbacks
 
 import (
+	"context"
+
 	"github.com/sirupsen/logrus"
-	"github.com/stakater/Reloader/internal/pkg/util"
 	"github.com/stakater/Reloader/pkg/kube"
 	appsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
 	meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/apimachinery/pkg/runtime"
 
+	argorolloutv1alpha1 "github.com/argoproj/argo-rollouts/pkg/apis/rollouts/v1alpha1"
 	openshiftv1 "github.com/openshift/api/apps/v1"
 )
 
-//ItemsFunc is a generic function to return a specific resource array in given namespace
-type ItemsFunc func(kube.Clients, string) []interface{}
+// ItemsFunc is a generic function to return a specific resource array in given namespace
+type ItemsFunc func(kube.Clients, string) []runtime.Object
 
-//ContainersFunc is a generic func to return containers
-type ContainersFunc func(interface{}) []v1.Container
+// ContainersFunc is a generic func to return containers
+type ContainersFunc func(runtime.Object) []v1.Container
 
-//InitContainersFunc is a generic func to return containers
-type InitContainersFunc func(interface{}) []v1.Container
+// InitContainersFunc is a generic func to return containers
+type InitContainersFunc func(runtime.Object) []v1.Container
 
-//VolumesFunc is a generic func to return volumes
-type VolumesFunc func(interface{}) []v1.Volume
+// VolumesFunc is a generic func to return volumes
+type VolumesFunc func(runtime.Object) []v1.Volume
 
-//UpdateFunc performs the resource update
-type UpdateFunc func(kube.Clients, string, interface{}) error
+// UpdateFunc performs the resource update
+type UpdateFunc func(kube.Clients, string, runtime.Object) error
 
-//RollingUpgradeFuncs contains generic functions to perform rolling upgrade
+// AnnotationsFunc is a generic func to return annotations
+type AnnotationsFunc func(runtime.Object) map[string]string
+
+// PodAnnotationsFunc is a generic func to return annotations
+type PodAnnotationsFunc func(runtime.Object) map[string]string
+
+// RollingUpgradeFuncs contains generic functions to perform rolling upgrade
 type RollingUpgradeFuncs struct {
 	ItemsFunc          ItemsFunc
+	AnnotationsFunc    AnnotationsFunc
+	PodAnnotationsFunc PodAnnotationsFunc
 	ContainersFunc     ContainersFunc
 	InitContainersFunc InitContainersFunc
 	UpdateFunc         UpdateFunc
@@ -37,125 +48,260 @@ type RollingUpgradeFuncs struct {
 }
 
 // GetDeploymentItems returns the deployments in given namespace
-func GetDeploymentItems(clients kube.Clients, namespace string) []interface{} {
-	deployments, err := clients.KubernetesClient.AppsV1().Deployments(namespace).List(meta_v1.ListOptions{})
+func GetDeploymentItems(clients kube.Clients, namespace string) []runtime.Object {
+	deployments, err := clients.KubernetesClient.AppsV1().Deployments(namespace).List(context.TODO(), meta_v1.ListOptions{})
 	if err != nil {
 		logrus.Errorf("Failed to list deployments %v", err)
 	}
-	return util.InterfaceSlice(deployments.Items)
+
+	items := make([]runtime.Object, len(deployments.Items))
+	// Ensure we always have pod annotations to add to
+	for i, v := range deployments.Items {
+		if v.Spec.Template.ObjectMeta.Annotations == nil {
+			annotations := make(map[string]string)
+			deployments.Items[i].Spec.Template.ObjectMeta.Annotations = annotations
+		}
+		items[i] = &deployments.Items[i]
+	}
+
+	return items
 }
 
 // GetDaemonSetItems returns the daemonSets in given namespace
-func GetDaemonSetItems(clients kube.Clients, namespace string) []interface{} {
-	daemonSets, err := clients.KubernetesClient.AppsV1().DaemonSets(namespace).List(meta_v1.ListOptions{})
+func GetDaemonSetItems(clients kube.Clients, namespace string) []runtime.Object {
+	daemonSets, err := clients.KubernetesClient.AppsV1().DaemonSets(namespace).List(context.TODO(), meta_v1.ListOptions{})
 	if err != nil {
 		logrus.Errorf("Failed to list daemonSets %v", err)
 	}
-	return util.InterfaceSlice(daemonSets.Items)
+
+	items := make([]runtime.Object, len(daemonSets.Items))
+	// Ensure we always have pod annotations to add to
+	for i, v := range daemonSets.Items {
+		if v.Spec.Template.ObjectMeta.Annotations == nil {
+			daemonSets.Items[i].Spec.Template.ObjectMeta.Annotations = make(map[string]string)
+		}
+		items[i] = &daemonSets.Items[i]
+	}
+
+	return items
 }
 
 // GetStatefulSetItems returns the statefulSets in given namespace
-func GetStatefulSetItems(clients kube.Clients, namespace string) []interface{} {
-	statefulSets, err := clients.KubernetesClient.AppsV1().StatefulSets(namespace).List(meta_v1.ListOptions{})
+func GetStatefulSetItems(clients kube.Clients, namespace string) []runtime.Object {
+	statefulSets, err := clients.KubernetesClient.AppsV1().StatefulSets(namespace).List(context.TODO(), meta_v1.ListOptions{})
 	if err != nil {
 		logrus.Errorf("Failed to list statefulSets %v", err)
 	}
-	return util.InterfaceSlice(statefulSets.Items)
+
+	items := make([]runtime.Object, len(statefulSets.Items))
+	// Ensure we always have pod annotations to add to
+	for i, v := range statefulSets.Items {
+		if v.Spec.Template.ObjectMeta.Annotations == nil {
+			statefulSets.Items[i].Spec.Template.ObjectMeta.Annotations = make(map[string]string)
+		}
+		items[i] = &statefulSets.Items[i]
+	}
+
+	return items
 }
 
 // GetDeploymentConfigItems returns the deploymentConfigs in given namespace
-func GetDeploymentConfigItems(clients kube.Clients, namespace string) []interface{} {
-	deploymentConfigs, err := clients.OpenshiftAppsClient.AppsV1().DeploymentConfigs(namespace).List(meta_v1.ListOptions{})
+func GetDeploymentConfigItems(clients kube.Clients, namespace string) []runtime.Object {
+	deploymentConfigs, err := clients.OpenshiftAppsClient.AppsV1().DeploymentConfigs(namespace).List(context.TODO(), meta_v1.ListOptions{})
 	if err != nil {
 		logrus.Errorf("Failed to list deploymentConfigs %v", err)
 	}
-	return util.InterfaceSlice(deploymentConfigs.Items)
+
+	items := make([]runtime.Object, len(deploymentConfigs.Items))
+	// Ensure we always have pod annotations to add to
+	for i, v := range deploymentConfigs.Items {
+		if v.Spec.Template.ObjectMeta.Annotations == nil {
+			deploymentConfigs.Items[i].Spec.Template.ObjectMeta.Annotations = make(map[string]string)
+		}
+		items[i] = &deploymentConfigs.Items[i]
+	}
+
+	return items
+}
+
+// GetRolloutItems returns the rollouts in given namespace
+func GetRolloutItems(clients kube.Clients, namespace string) []runtime.Object {
+	rollouts, err := clients.ArgoRolloutClient.ArgoprojV1alpha1().Rollouts(namespace).List(context.TODO(), meta_v1.ListOptions{})
+	if err != nil {
+		logrus.Errorf("Failed to list Rollouts %v", err)
+	}
+
+	items := make([]runtime.Object, len(rollouts.Items))
+	// Ensure we always have pod annotations to add to
+	for i, v := range rollouts.Items {
+		if v.Spec.Template.ObjectMeta.Annotations == nil {
+			rollouts.Items[i].Spec.Template.ObjectMeta.Annotations = make(map[string]string)
+		}
+		items[i] = &rollouts.Items[i]
+	}
+
+	return items
+}
+
+// GetDeploymentAnnotations returns the annotations of given deployment
+func GetDeploymentAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.Deployment).ObjectMeta.Annotations
+}
+
+// GetDaemonSetAnnotations returns the annotations of given daemonSet
+func GetDaemonSetAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.DaemonSet).ObjectMeta.Annotations
+}
+
+// GetStatefulSetAnnotations returns the annotations of given statefulSet
+func GetStatefulSetAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.StatefulSet).ObjectMeta.Annotations
+}
+
+// GetDeploymentConfigAnnotations returns the annotations of given deploymentConfig
+func GetDeploymentConfigAnnotations(item runtime.Object) map[string]string {
+	return item.(*openshiftv1.DeploymentConfig).ObjectMeta.Annotations
+}
+
+// GetRolloutAnnotations returns the annotations of given rollout
+func GetRolloutAnnotations(item runtime.Object) map[string]string {
+	return item.(*argorolloutv1alpha1.Rollout).ObjectMeta.Annotations
+}
+
+// GetDeploymentPodAnnotations returns the pod's annotations of given deployment
+func GetDeploymentPodAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.Deployment).Spec.Template.ObjectMeta.Annotations
+}
+
+// GetDaemonSetPodAnnotations returns the pod's annotations of given daemonSet
+func GetDaemonSetPodAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.DaemonSet).Spec.Template.ObjectMeta.Annotations
+}
+
+// GetStatefulSetPodAnnotations returns the pod's annotations of given statefulSet
+func GetStatefulSetPodAnnotations(item runtime.Object) map[string]string {
+	return item.(*appsv1.StatefulSet).Spec.Template.ObjectMeta.Annotations
+}
+
+// GetDeploymentConfigPodAnnotations returns the pod's annotations of given deploymentConfig
+func GetDeploymentConfigPodAnnotations(item runtime.Object) map[string]string {
+	return item.(*openshiftv1.DeploymentConfig).Spec.Template.ObjectMeta.Annotations
+}
+
+// GetRolloutPodAnnotations returns the pod's annotations of given rollout
+func GetRolloutPodAnnotations(item runtime.Object) map[string]string {
+	return item.(*argorolloutv1alpha1.Rollout).Spec.Template.ObjectMeta.Annotations
 }
 
 // GetDeploymentContainers returns the containers of given deployment
-func GetDeploymentContainers(item interface{}) []v1.Container {
-	return item.(appsv1.Deployment).Spec.Template.Spec.Containers
+func GetDeploymentContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.Deployment).Spec.Template.Spec.Containers
 }
 
-// GetDaemonSetContainers returns the containers of given daemonset
-func GetDaemonSetContainers(item interface{}) []v1.Container {
-	return item.(appsv1.DaemonSet).Spec.Template.Spec.Containers
+// GetDaemonSetContainers returns the containers of given daemonSet
+func GetDaemonSetContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.DaemonSet).Spec.Template.Spec.Containers
 }
 
-// GetStatefulsetContainers returns the containers of given statefulSet
-func GetStatefulsetContainers(item interface{}) []v1.Container {
-	return item.(appsv1.StatefulSet).Spec.Template.Spec.Containers
+// GetStatefulSetContainers returns the containers of given statefulSet
+func GetStatefulSetContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.StatefulSet).Spec.Template.Spec.Containers
 }
 
 // GetDeploymentConfigContainers returns the containers of given deploymentConfig
-func GetDeploymentConfigContainers(item interface{}) []v1.Container {
-	return item.(openshiftv1.DeploymentConfig).Spec.Template.Spec.Containers
+func GetDeploymentConfigContainers(item runtime.Object) []v1.Container {
+	return item.(*openshiftv1.DeploymentConfig).Spec.Template.Spec.Containers
+}
+
+// GetRolloutContainers returns the containers of given rollout
+func GetRolloutContainers(item runtime.Object) []v1.Container {
+	return item.(*argorolloutv1alpha1.Rollout).Spec.Template.Spec.Containers
 }
 
 // GetDeploymentInitContainers returns the containers of given deployment
-func GetDeploymentInitContainers(item interface{}) []v1.Container {
-	return item.(appsv1.Deployment).Spec.Template.Spec.InitContainers
+func GetDeploymentInitContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.Deployment).Spec.Template.Spec.InitContainers
 }
 
-// GetDaemonSetInitContainers returns the containers of given daemonset
-func GetDaemonSetInitContainers(item interface{}) []v1.Container {
-	return item.(appsv1.DaemonSet).Spec.Template.Spec.InitContainers
+// GetDaemonSetInitContainers returns the containers of given daemonSet
+func GetDaemonSetInitContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.DaemonSet).Spec.Template.Spec.InitContainers
 }
 
-// GetStatefulsetInitContainers returns the containers of given statefulSet
-func GetStatefulsetInitContainers(item interface{}) []v1.Container {
-	return item.(appsv1.StatefulSet).Spec.Template.Spec.InitContainers
+// GetStatefulSetInitContainers returns the containers of given statefulSet
+func GetStatefulSetInitContainers(item runtime.Object) []v1.Container {
+	return item.(*appsv1.StatefulSet).Spec.Template.Spec.InitContainers
 }
 
 // GetDeploymentConfigInitContainers returns the containers of given deploymentConfig
-func GetDeploymentConfigInitContainers(item interface{}) []v1.Container {
-	return item.(openshiftv1.DeploymentConfig).Spec.Template.Spec.InitContainers
+func GetDeploymentConfigInitContainers(item runtime.Object) []v1.Container {
+	return item.(*openshiftv1.DeploymentConfig).Spec.Template.Spec.InitContainers
+}
+
+// GetRolloutInitContainers returns the containers of given rollout
+func GetRolloutInitContainers(item runtime.Object) []v1.Container {
+	return item.(*argorolloutv1alpha1.Rollout).Spec.Template.Spec.InitContainers
 }
 
 // UpdateDeployment performs rolling upgrade on deployment
-func UpdateDeployment(clients kube.Clients, namespace string, resource interface{}) error {
-	deployment := resource.(appsv1.Deployment)
-	_, err := clients.KubernetesClient.AppsV1().Deployments(namespace).Update(&deployment)
+func UpdateDeployment(clients kube.Clients, namespace string, resource runtime.Object) error {
+	deployment := resource.(*appsv1.Deployment)
+	_, err := clients.KubernetesClient.AppsV1().Deployments(namespace).Update(context.TODO(), deployment, meta_v1.UpdateOptions{FieldManager: "Reloader"})
 	return err
 }
 
 // UpdateDaemonSet performs rolling upgrade on daemonSet
-func UpdateDaemonSet(clients kube.Clients, namespace string, resource interface{}) error {
-	daemonSet := resource.(appsv1.DaemonSet)
-	_, err := clients.KubernetesClient.AppsV1().DaemonSets(namespace).Update(&daemonSet)
+func UpdateDaemonSet(clients kube.Clients, namespace string, resource runtime.Object) error {
+	daemonSet := resource.(*appsv1.DaemonSet)
+	_, err := clients.KubernetesClient.AppsV1().DaemonSets(namespace).Update(context.TODO(), daemonSet, meta_v1.UpdateOptions{FieldManager: "Reloader"})
 	return err
 }
 
-// UpdateStatefulset performs rolling upgrade on statefulSet
-func UpdateStatefulset(clients kube.Clients, namespace string, resource interface{}) error {
-	statefulSet := resource.(appsv1.StatefulSet)
-	_, err := clients.KubernetesClient.AppsV1().StatefulSets(namespace).Update(&statefulSet)
+// UpdateStatefulSet performs rolling upgrade on statefulSet
+func UpdateStatefulSet(clients kube.Clients, namespace string, resource runtime.Object) error {
+	statefulSet := resource.(*appsv1.StatefulSet)
+	_, err := clients.KubernetesClient.AppsV1().StatefulSets(namespace).Update(context.TODO(), statefulSet, meta_v1.UpdateOptions{FieldManager: "Reloader"})
 	return err
 }
 
 // UpdateDeploymentConfig performs rolling upgrade on deploymentConfig
-func UpdateDeploymentConfig(clients kube.Clients, namespace string, resource interface{}) error {
-	deploymentConfig := resource.(openshiftv1.DeploymentConfig)
-	_, err := clients.OpenshiftAppsClient.AppsV1().DeploymentConfigs(namespace).Update(&deploymentConfig)
+func UpdateDeploymentConfig(clients kube.Clients, namespace string, resource runtime.Object) error {
+	deploymentConfig := resource.(*openshiftv1.DeploymentConfig)
+	_, err := clients.OpenshiftAppsClient.AppsV1().DeploymentConfigs(namespace).Update(context.TODO(), deploymentConfig, meta_v1.UpdateOptions{FieldManager: "Reloader"})
+	return err
+}
+
+// UpdateRollout performs rolling upgrade on rollout
+func UpdateRollout(clients kube.Clients, namespace string, resource runtime.Object) error {
+	rollout := resource.(*argorolloutv1alpha1.Rollout)
+	rolloutBefore, _ := clients.ArgoRolloutClient.ArgoprojV1alpha1().Rollouts(namespace).Get(context.TODO(), rollout.Name, meta_v1.GetOptions{})
+	logrus.Warnf("Before: %+v", rolloutBefore.Spec.Template.Spec.Containers[0].Env)
+	logrus.Warnf("After: %+v", rollout.Spec.Template.Spec.Containers[0].Env)
+	_, err := clients.ArgoRolloutClient.ArgoprojV1alpha1().Rollouts(namespace).Update(context.TODO(), rollout, meta_v1.UpdateOptions{FieldManager: "Reloader"})
 	return err
 }
 
 // GetDeploymentVolumes returns the Volumes of given deployment
-func GetDeploymentVolumes(item interface{}) []v1.Volume {
-	return item.(appsv1.Deployment).Spec.Template.Spec.Volumes
+func GetDeploymentVolumes(item runtime.Object) []v1.Volume {
+	return item.(*appsv1.Deployment).Spec.Template.Spec.Volumes
 }
 
-// GetDaemonSetVolumes returns the Volumes of given daemonset
-func GetDaemonSetVolumes(item interface{}) []v1.Volume {
-	return item.(appsv1.DaemonSet).Spec.Template.Spec.Volumes
+// GetDaemonSetVolumes returns the Volumes of given daemonSet
+func GetDaemonSetVolumes(item runtime.Object) []v1.Volume {
+	return item.(*appsv1.DaemonSet).Spec.Template.Spec.Volumes
 }
 
-// GetStatefulsetVolumes returns the Volumes of given statefulSet
-func GetStatefulsetVolumes(item interface{}) []v1.Volume {
-	return item.(appsv1.StatefulSet).Spec.Template.Spec.Volumes
+// GetStatefulSetVolumes returns the Volumes of given statefulSet
+func GetStatefulSetVolumes(item runtime.Object) []v1.Volume {
+	return item.(*appsv1.StatefulSet).Spec.Template.Spec.Volumes
 }
 
 // GetDeploymentConfigVolumes returns the Volumes of given deploymentConfig
-func GetDeploymentConfigVolumes(item interface{}) []v1.Volume {
-	return item.(openshiftv1.DeploymentConfig).Spec.Template.Spec.Volumes
+func GetDeploymentConfigVolumes(item runtime.Object) []v1.Volume {
+	return item.(*openshiftv1.DeploymentConfig).Spec.Template.Spec.Volumes
+}
+
+// GetRolloutVolumes returns the Volumes of given rollout
+func GetRolloutVolumes(item runtime.Object) []v1.Volume {
+	return item.(*argorolloutv1alpha1.Rollout).Spec.Template.Spec.Volumes
 }

internal/pkg/cmd/reloader.go

@@ -1,13 +1,19 @@
 package cmd
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"os"
+	"strings"
+
+	"github.com/stakater/Reloader/internal/pkg/constants"
+	"github.com/stakater/Reloader/internal/pkg/leadership"
 
 	"github.com/sirupsen/logrus"
 	"github.com/spf13/cobra"
 	"github.com/stakater/Reloader/internal/pkg/controller"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
 	"github.com/stakater/Reloader/internal/pkg/options"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	"github.com/stakater/Reloader/pkg/kube"
@@ -17,21 +23,93 @@ import (
 // NewReloaderCommand starts the reloader controller
 func NewReloaderCommand() *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "reloader",
-		Short: "A watcher for your Kubernetes cluster",
-		Run:   startReloader,
+		Use:     "reloader",
+		Short:   "A watcher for your Kubernetes cluster",
+		PreRunE: validateFlags,
+		Run:     startReloader,
 	}
 
 	// options
-	cmd.PersistentFlags().StringVar(&options.ConfigmapUpdateOnChangeAnnotation, "configmap-annotation", "configmap.reloader.stakater.com/reload", "annotation to detect changes in configmaps")
-	cmd.PersistentFlags().StringVar(&options.SecretUpdateOnChangeAnnotation, "secret-annotation", "secret.reloader.stakater.com/reload", "annotation to detect changes in secrets")
+	cmd.PersistentFlags().StringVar(&options.ConfigmapUpdateOnChangeAnnotation, "configmap-annotation", "configmap.reloader.stakater.com/reload", "annotation to detect changes in configmaps, specified by name")
+	cmd.PersistentFlags().StringVar(&options.SecretUpdateOnChangeAnnotation, "secret-annotation", "secret.reloader.stakater.com/reload", "annotation to detect changes in secrets, specified by name")
 	cmd.PersistentFlags().StringVar(&options.ReloaderAutoAnnotation, "auto-annotation", "reloader.stakater.com/auto", "annotation to detect changes in secrets")
+	cmd.PersistentFlags().StringVar(&options.AutoSearchAnnotation, "auto-search-annotation", "reloader.stakater.com/search", "annotation to detect changes in configmaps or secrets tagged with special match annotation")
+	cmd.PersistentFlags().StringVar(&options.SearchMatchAnnotation, "search-match-annotation", "reloader.stakater.com/match", "annotation to mark secrets or configmapts to match the search")
+	cmd.PersistentFlags().StringVar(&options.LogFormat, "log-format", "", "Log format to use (empty string for text, or JSON")
 	cmd.PersistentFlags().StringSlice("resources-to-ignore", []string{}, "list of resources to ignore (valid options 'configMaps' or 'secrets')")
 	cmd.PersistentFlags().StringSlice("namespaces-to-ignore", []string{}, "list of namespaces to ignore")
+	cmd.PersistentFlags().StringSlice("namespace-selector", []string{}, "list of key:vaule namespace labels to include")
+	cmd.PersistentFlags().StringVar(&options.IsArgoRollouts, "is-Argo-Rollouts", "false", "Add support for argo rollouts")
+	cmd.PersistentFlags().StringVar(&options.ReloadStrategy, constants.ReloadStrategyFlag, constants.EnvVarsReloadStrategy, "Specifies the desired reload strategy")
+	cmd.PersistentFlags().StringVar(&options.ReloadOnCreate, "reload-on-create", "false", "Add support to watch create events")
+	cmd.PersistentFlags().BoolVar(&options.EnableHA, "enable-ha", false, "Adds support for running multiple replicas via leadership election")
+
 	return cmd
 }
 
+func validateFlags(*cobra.Command, []string) error {
+	// Ensure the reload strategy is one of the following...
+	var validReloadStrategy bool
+	valid := []string{constants.EnvVarsReloadStrategy, constants.AnnotationsReloadStrategy}
+	for _, s := range valid {
+		if s == options.ReloadStrategy {
+			validReloadStrategy = true
+		}
+	}
+
+	if !validReloadStrategy {
+		err := fmt.Sprintf("%s must be one of: %s", constants.ReloadStrategyFlag, strings.Join(valid, ", "))
+		return errors.New(err)
+	}
+
+	// Validate that HA options are correct
+	if options.EnableHA {
+		if err := validateHAEnvs(); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func configureLogging(logFormat string) error {
+	switch logFormat {
+	case "json":
+		logrus.SetFormatter(&logrus.JSONFormatter{})
+	default:
+		// just let the library use default on empty string.
+		if logFormat != "" {
+			return fmt.Errorf("unsupported logging formatter: %q", logFormat)
+		}
+	}
+	return nil
+}
+
+func validateHAEnvs() error {
+	podName, podNamespace := getHAEnvs()
+
+	if podName == "" {
+		return fmt.Errorf("%s not set, cannot run in HA mode without %s set", constants.PodNameEnv, constants.PodNameEnv)
+	}
+	if podNamespace == "" {
+		return fmt.Errorf("%s not set, cannot run in HA mode without %s set", constants.PodNamespaceEnv, constants.PodNamespaceEnv)
+	}
+	return nil
+}
+
+func getHAEnvs() (string, string) {
+	podName := os.Getenv(constants.PodNameEnv)
+	podNamespace := os.Getenv(constants.PodNamespaceEnv)
+
+	return podName, podNamespace
+}
+
 func startReloader(cmd *cobra.Command, args []string) {
+	err := configureLogging(options.LogFormat)
+	if err != nil {
+		logrus.Warn(err)
+	}
+
 	logrus.Info("Starting Reloader")
 	currentNamespace := os.Getenv("KUBERNETES_NAMESPACE")
 	if len(currentNamespace) == 0 {
@@ -55,16 +133,34 @@ func startReloader(cmd *cobra.Command, args []string) {
 		logrus.Fatal(err)
 	}
 
+	namespaceLabelSelector, err := getNamespaceLabelSelector(cmd)
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	if len(namespaceLabelSelector) > 0 {
+		logrus.Warnf("namespace-selector is set, will detect changes in namespaces with these labels: %s.", namespaceLabelSelector)
+	}
+
+	collectors := metrics.SetupPrometheusEndpoint()
+
+	var controllers []*controller.Controller
 	for k := range kube.ResourceMap {
 		if ignoredResourcesList.Contains(k) {
 			continue
 		}
 
-		c, err := controller.NewController(clientset, k, currentNamespace, ignoredNamespacesList)
+		c, err := controller.NewController(clientset, k, currentNamespace, ignoredNamespacesList, namespaceLabelSelector, collectors)
 		if err != nil {
 			logrus.Fatalf("%s", err)
 		}
 
+		controllers = append(controllers, c)
+
+		// If HA is enabled we only run the controller when
+		if options.EnableHA {
+			continue
+		}
 		// Now let's start the controller
 		stop := make(chan struct{})
 		defer close(stop)
@@ -72,14 +168,37 @@ func startReloader(cmd *cobra.Command, args []string) {
 		go c.Run(1, stop)
 	}
 
-	// Wait forever
-	select {}
+	// Run leadership election
+	if options.EnableHA {
+		podName, podNamespace := getHAEnvs()
+		lock := leadership.GetNewLock(clientset.CoordinationV1(), constants.LockName, podName, podNamespace)
+		ctx, cancel := context.WithCancel(context.Background())
+		defer cancel()
+		go leadership.RunLeaderElection(lock, ctx, cancel, podName, controllers)
+	}
+
+	logrus.Fatal(leadership.Healthz())
 }
 
 func getIgnoredNamespacesList(cmd *cobra.Command) (util.List, error) {
 	return getStringSliceFromFlags(cmd, "namespaces-to-ignore")
 }
 
+func getNamespaceLabelSelector(cmd *cobra.Command) (util.Map, error) {
+	slice, err := getStringSliceFromFlags(cmd, "namespace-selector")
+	if err != nil {
+		logrus.Fatal(err)
+	}
+
+	var namespaceSelectorMap util.Map = make(util.Map)
+	for _, kv := range slice {
+		split := strings.Split(kv, ":")
+		namespaceSelectorMap[split[0]] = split[1]
+	}
+
+	return namespaceSelectorMap, nil
+}
+
 func getStringSliceFromFlags(cmd *cobra.Command, flag string) ([]string, error) {
 	slice, err := cmd.Flags().GetStringSlice(flag)
 	if err != nil {

internal/pkg/constants/constants.go

@@ -7,4 +7,23 @@ const (
 	SecretEnvVarPostfix = "SECRET"
 	// EnvVarPrefix is a Prefix for environment variable
 	EnvVarPrefix = "STAKATER_"
+
+	// ReloaderAnnotationPrefix is a Prefix for all reloader annotations
+	ReloaderAnnotationPrefix = "reloader.stakater.com"
+	// LastReloadedFromAnnotation is an annotation used to describe the last resource that triggered a reload
+	LastReloadedFromAnnotation = "last-reloaded-from"
+
+	// 	ReloadStrategyFlag The reload strategy flag name
+	ReloadStrategyFlag = "reload-strategy"
+	// EnvVarsReloadStrategy instructs Reloader to add container environment variables to facilitate a restart
+	EnvVarsReloadStrategy = "env-vars"
+	// AnnotationsReloadStrategy instructs Reloader to add pod template annotations to facilitate a restart
+	AnnotationsReloadStrategy = "annotations"
+)
+
+// Leadership election related consts
+const (
+	LockName        string = "stakater-reloader-lock"
+	PodNameEnv      string = "POD_NAME"
+	PodNamespaceEnv string = "POD_NAMESPACE"
 )

internal/pkg/controller/controller.go

@@ -1,21 +1,27 @@
 package controller
 
 import (
+	"context"
 	"fmt"
 	"time"
 
 	"github.com/sirupsen/logrus"
 	"github.com/stakater/Reloader/internal/pkg/handler"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
+	"github.com/stakater/Reloader/internal/pkg/options"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	"github.com/stakater/Reloader/pkg/kube"
+	v1 "k8s.io/api/core/v1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/fields"
 	"k8s.io/apimachinery/pkg/util/runtime"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/client-go/kubernetes"
+	typedcorev1 "k8s.io/client-go/kubernetes/typed/core/v1"
 	"k8s.io/client-go/tools/cache"
+	"k8s.io/client-go/tools/record"
 	"k8s.io/client-go/util/workqueue"
-
-	v1 "k8s.io/api/core/v1"
+	"k8s.io/kubectl/pkg/scheme"
 )
 
 // Controller for checking events
@@ -26,17 +32,29 @@ type Controller struct {
 	informer          cache.Controller
 	namespace         string
 	ignoredNamespaces util.List
+	collectors        metrics.Collectors
+	recorder          record.EventRecorder
+	namespaceSelector map[string]string
 }
 
+// controllerInitialized flag determines whether controlled is being initialized
+var controllerInitialized bool = false
+
 // NewController for initializing a Controller
 func NewController(
-	client kubernetes.Interface, resource string, namespace string, ignoredNamespaces []string) (*Controller, error) {
+	client kubernetes.Interface, resource string, namespace string, ignoredNamespaces []string, namespaceLabelSelector map[string]string, collectors metrics.Collectors) (*Controller, error) {
 
 	c := Controller{
 		client:            client,
 		namespace:         namespace,
 		ignoredNamespaces: ignoredNamespaces,
+		namespaceSelector: namespaceLabelSelector,
 	}
+	eventBroadcaster := record.NewBroadcaster()
+	eventBroadcaster.StartRecordingToSink(&typedcorev1.EventSinkImpl{
+		Interface: client.CoreV1().Events(""),
+	})
+	recorder := eventBroadcaster.NewRecorder(scheme.Scheme, v1.EventSource{Component: fmt.Sprintf("reloader-%s", resource)})
 
 	queue := workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter())
 	listWatcher := cache.NewListWatchFromClient(client.CoreV1().RESTClient(), resource, namespace, fields.Everything())
@@ -49,15 +67,23 @@ func NewController(
 	c.indexer = indexer
 	c.informer = informer
 	c.queue = queue
+	c.collectors = collectors
+	c.recorder = recorder
+
+	logrus.Infof("created controller for: %s", resource)
 	return &c, nil
 }
 
 // Add function to add a new object to the queue in case of creating a resource
 func (c *Controller) Add(obj interface{}) {
-	if !c.resourceInIgnoredNamespace(obj) {
-		c.queue.Add(handler.ResourceCreatedHandler{
-			Resource: obj,
-		})
+	if options.ReloadOnCreate == "true" {
+		if !c.resourceInIgnoredNamespace(obj) && c.resourceInNamespaceSelector(obj) && controllerInitialized {
+			c.queue.Add(handler.ResourceCreatedHandler{
+				Resource:   obj,
+				Collectors: c.collectors,
+				Recorder:   c.recorder,
+			})
+		}
 	}
 }
 
@@ -71,12 +97,50 @@ func (c *Controller) resourceInIgnoredNamespace(raw interface{}) bool {
 	return false
 }
 
+func (c *Controller) resourceInNamespaceSelector(raw interface{}) bool {
+	if len(c.namespaceSelector) == 0 {
+		return true
+	}
+
+	switch object := raw.(type) {
+	case *v1.ConfigMap:
+		return c.matchLabels(object.ObjectMeta.Namespace)
+	case *v1.Secret:
+		return c.matchLabels(object.ObjectMeta.Namespace)
+	}
+	return true
+}
+
+func (c *Controller) matchLabels(resourceNamespace string) bool {
+	namespace, err := c.client.CoreV1().Namespaces().Get(context.Background(), resourceNamespace, metav1.GetOptions{})
+	if err != nil {
+		logrus.Warn(err)
+		return false
+	}
+
+	for selectorKey, selectorVal := range c.namespaceSelector {
+
+		namespaceLabelVal, namespaceLabelKeyExists := namespace.ObjectMeta.Labels[selectorKey]
+
+		if namespaceLabelKeyExists && selectorVal == "*" {
+			continue
+		}
+
+		if !namespaceLabelKeyExists || selectorVal != namespaceLabelVal {
+			return false
+		}
+	}
+	return true
+}
+
 // Update function to add an old object and a new object to the queue in case of updating a resource
 func (c *Controller) Update(old interface{}, new interface{}) {
-	if !c.resourceInIgnoredNamespace(new) {
+	if !c.resourceInIgnoredNamespace(new) && c.resourceInNamespaceSelector(new) {
 		c.queue.Add(handler.ResourceUpdatedHandler{
 			Resource:    new,
 			OldResource: old,
+			Collectors:  c.collectors,
+			Recorder:    c.recorder,
 		})
 	}
 }
@@ -86,7 +150,7 @@ func (c *Controller) Delete(old interface{}) {
 	// Todo: Any future delete event can be handled here
 }
 
-//Run function for controller which handles the queue
+// Run function for controller which handles the queue
 func (c *Controller) Run(threadiness int, stopCh chan struct{}) {
 	defer runtime.HandleCrash()
 
@@ -110,6 +174,9 @@ func (c *Controller) Run(threadiness int, stopCh chan struct{}) {
 }
 
 func (c *Controller) runWorker() {
+	// At this point the controller is fully initialized and we can start processing the resources
+	controllerInitialized = true
+
 	for c.processNextItem() {
 	}
 }
@@ -144,7 +211,7 @@ func (c *Controller) handleErr(err error, key interface{}) {
 
 	// This controller retries 5 times if something goes wrong. After that, it stops trying.
 	if c.queue.NumRequeues(key) < 5 {
-		logrus.Errorf("Error syncing events %v: %v", key, err)
+		logrus.Errorf("Error syncing events: %v", err)
 
 		// Re-enqueue the key rate limited. Based on the rate limiter on the
 		// queue and the re-enqueue history, the key will be processed later again.
@@ -155,5 +222,6 @@ func (c *Controller) handleErr(err error, key interface{}) {
 	c.queue.Forget(key)
 	// Report to an external entity that, even after several retries, we could not successfully process this key
 	runtime.HandleError(err)
-	logrus.Infof("Dropping the key %q out of the queue: %v", key, err)
+	logrus.Errorf("Dropping key out of the queue: %v", err)
+	logrus.Debugf("Dropping the key %q out of the queue: %v", key, err)
 }

internal/pkg/handler/create.go

@@ -2,13 +2,17 @@ package handler
 
 import (
 	"github.com/sirupsen/logrus"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	v1 "k8s.io/api/core/v1"
+	"k8s.io/client-go/tools/record"
 )
 
 // ResourceCreatedHandler contains new objects
 type ResourceCreatedHandler struct {
-	Resource interface{}
+	Resource   interface{}
+	Collectors metrics.Collectors
+	Recorder   record.EventRecorder
 }
 
 // Handle processes the newly created resource
@@ -18,7 +22,7 @@ func (r ResourceCreatedHandler) Handle() error {
 	} else {
 		config, _ := r.GetConfig()
 		// process resource based on its type
-		doRollingUpgrade(config)
+		return doRollingUpgrade(config, r.Collectors, r.Recorder)
 	}
 	return nil
 }

internal/pkg/handler/update.go

@@ -2,14 +2,18 @@ package handler
 
 import (
 	"github.com/sirupsen/logrus"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	v1 "k8s.io/api/core/v1"
+	"k8s.io/client-go/tools/record"
 )
 
 // ResourceUpdatedHandler contains updated objects
 type ResourceUpdatedHandler struct {
 	Resource    interface{}
 	OldResource interface{}
+	Collectors  metrics.Collectors
+	Recorder    record.EventRecorder
 }
 
 // Handle processes the updated resource
@@ -20,7 +24,7 @@ func (r ResourceUpdatedHandler) Handle() error {
 		config, oldSHAData := r.GetConfig()
 		if config.SHAValue != oldSHAData {
 			// process resource based on its type
-			doRollingUpgrade(config)
+			return doRollingUpgrade(config, r.Collectors, r.Recorder)
 		}
 	}
 	return nil
@@ -31,7 +35,7 @@ func (r ResourceUpdatedHandler) GetConfig() (util.Config, string) {
 	var oldSHAData string
 	var config util.Config
 	if _, ok := r.Resource.(*v1.ConfigMap); ok {
-		oldSHAData = util.GetSHAfromConfigmap(r.OldResource.(*v1.ConfigMap).Data)
+		oldSHAData = util.GetSHAfromConfigmap(r.OldResource.(*v1.ConfigMap))
 		config = util.GetConfigmapConfig(r.Resource.(*v1.ConfigMap))
 	} else if _, ok := r.Resource.(*v1.Secret); ok {
 		oldSHAData = util.GetSHAfromSecret(r.OldResource.(*v1.Secret).Data)

internal/pkg/handler/upgrade.go

@@ -1,22 +1,35 @@
 package handler
 
 import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"os"
+	"regexp"
 	"strconv"
 	"strings"
 
+	"github.com/prometheus/client_golang/prometheus"
 	"github.com/sirupsen/logrus"
+	alert "github.com/stakater/Reloader/internal/pkg/alerts"
 	"github.com/stakater/Reloader/internal/pkg/callbacks"
 	"github.com/stakater/Reloader/internal/pkg/constants"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
 	"github.com/stakater/Reloader/internal/pkg/options"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	"github.com/stakater/Reloader/pkg/kube"
 	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/meta"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/tools/record"
 )
 
 // GetDeploymentRollingUpgradeFuncs returns all callback funcs for a deployment
 func GetDeploymentRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 	return callbacks.RollingUpgradeFuncs{
 		ItemsFunc:          callbacks.GetDeploymentItems,
+		AnnotationsFunc:    callbacks.GetDeploymentAnnotations,
+		PodAnnotationsFunc: callbacks.GetDeploymentPodAnnotations,
 		ContainersFunc:     callbacks.GetDeploymentContainers,
 		InitContainersFunc: callbacks.GetDeploymentInitContainers,
 		UpdateFunc:         callbacks.UpdateDeployment,
@@ -29,6 +42,8 @@ func GetDeploymentRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 func GetDaemonSetRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 	return callbacks.RollingUpgradeFuncs{
 		ItemsFunc:          callbacks.GetDaemonSetItems,
+		AnnotationsFunc:    callbacks.GetDaemonSetAnnotations,
+		PodAnnotationsFunc: callbacks.GetDaemonSetPodAnnotations,
 		ContainersFunc:     callbacks.GetDaemonSetContainers,
 		InitContainersFunc: callbacks.GetDaemonSetInitContainers,
 		UpdateFunc:         callbacks.UpdateDaemonSet,
@@ -41,10 +56,12 @@ func GetDaemonSetRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 func GetStatefulSetRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 	return callbacks.RollingUpgradeFuncs{
 		ItemsFunc:          callbacks.GetStatefulSetItems,
-		ContainersFunc:     callbacks.GetStatefulsetContainers,
-		InitContainersFunc: callbacks.GetStatefulsetInitContainers,
-		UpdateFunc:         callbacks.UpdateStatefulset,
-		VolumesFunc:        callbacks.GetStatefulsetVolumes,
+		AnnotationsFunc:    callbacks.GetStatefulSetAnnotations,
+		PodAnnotationsFunc: callbacks.GetStatefulSetPodAnnotations,
+		ContainersFunc:     callbacks.GetStatefulSetContainers,
+		InitContainersFunc: callbacks.GetStatefulSetInitContainers,
+		UpdateFunc:         callbacks.UpdateStatefulSet,
+		VolumesFunc:        callbacks.GetStatefulSetVolumes,
 		ResourceType:       "StatefulSet",
 	}
 }
@@ -53,6 +70,8 @@ func GetStatefulSetRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 func GetDeploymentConfigRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 	return callbacks.RollingUpgradeFuncs{
 		ItemsFunc:          callbacks.GetDeploymentConfigItems,
+		AnnotationsFunc:    callbacks.GetDeploymentConfigAnnotations,
+		PodAnnotationsFunc: callbacks.GetDeploymentConfigPodAnnotations,
 		ContainersFunc:     callbacks.GetDeploymentConfigContainers,
 		InitContainersFunc: callbacks.GetDeploymentConfigInitContainers,
 		UpdateFunc:         callbacks.UpdateDeploymentConfig,
@@ -61,45 +80,91 @@ func GetDeploymentConfigRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
 	}
 }
 
-func doRollingUpgrade(config util.Config) {
-	clients := kube.GetClients()
-
-	rollingUpgrade(clients, config, GetDeploymentRollingUpgradeFuncs())
-	rollingUpgrade(clients, config, GetDaemonSetRollingUpgradeFuncs())
-	rollingUpgrade(clients, config, GetStatefulSetRollingUpgradeFuncs())
-
-	if kube.IsOpenshift {
-		rollingUpgrade(clients, config, GetDeploymentConfigRollingUpgradeFuncs())
+// GetArgoRolloutRollingUpgradeFuncs returns all callback funcs for a rollout
+func GetArgoRolloutRollingUpgradeFuncs() callbacks.RollingUpgradeFuncs {
+	return callbacks.RollingUpgradeFuncs{
+		ItemsFunc:          callbacks.GetRolloutItems,
+		AnnotationsFunc:    callbacks.GetRolloutAnnotations,
+		PodAnnotationsFunc: callbacks.GetRolloutPodAnnotations,
+		ContainersFunc:     callbacks.GetRolloutContainers,
+		InitContainersFunc: callbacks.GetRolloutInitContainers,
+		UpdateFunc:         callbacks.UpdateRollout,
+		VolumesFunc:        callbacks.GetRolloutVolumes,
+		ResourceType:       "Rollout",
 	}
 }
 
-func rollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs) {
+func doRollingUpgrade(config util.Config, collectors metrics.Collectors, recorder record.EventRecorder) error {
+	clients := kube.GetClients()
 
-	err := PerformRollingUpgrade(clients, config, upgradeFuncs)
+	err := rollingUpgrade(clients, config, GetDeploymentRollingUpgradeFuncs(), collectors, recorder)
+	if err != nil {
+		return err
+	}
+	err = rollingUpgrade(clients, config, GetDaemonSetRollingUpgradeFuncs(), collectors, recorder)
+	if err != nil {
+		return err
+	}
+	err = rollingUpgrade(clients, config, GetStatefulSetRollingUpgradeFuncs(), collectors, recorder)
+	if err != nil {
+		return err
+	}
+
+	if kube.IsOpenshift {
+		err = rollingUpgrade(clients, config, GetDeploymentConfigRollingUpgradeFuncs(), collectors, recorder)
+		if err != nil {
+			return err
+		}
+	}
+
+	if options.IsArgoRollouts == "true" {
+		err = rollingUpgrade(clients, config, GetArgoRolloutRollingUpgradeFuncs(), collectors, recorder)
+		if err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func rollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs, collectors metrics.Collectors, recorder record.EventRecorder) error {
+
+	err := PerformRollingUpgrade(clients, config, upgradeFuncs, collectors, recorder)
 	if err != nil {
 		logrus.Errorf("Rolling upgrade for '%s' failed with error = %v", config.ResourceName, err)
 	}
+	return err
 }
 
 // PerformRollingUpgrade upgrades the deployment if there is any change in configmap or secret data
-func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs) error {
+func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs, collectors metrics.Collectors, recorder record.EventRecorder) error {
 	items := upgradeFuncs.ItemsFunc(clients, config.Namespace)
-	var err error
+
 	for _, i := range items {
 		// find correct annotation and update the resource
-		annotationValue := util.ToObjectMeta(i).Annotations[config.Annotation]
-		reloaderEnabledValue := util.ToObjectMeta(i).Annotations[options.ReloaderAutoAnnotation]
+		annotations := upgradeFuncs.AnnotationsFunc(i)
+		annotationValue, found := annotations[config.Annotation]
+		searchAnnotationValue, foundSearchAnn := annotations[options.AutoSearchAnnotation]
+		reloaderEnabledValue, foundAuto := annotations[options.ReloaderAutoAnnotation]
+		if !found && !foundAuto && !foundSearchAnn {
+			annotations = upgradeFuncs.PodAnnotationsFunc(i)
+			annotationValue = annotations[config.Annotation]
+			searchAnnotationValue = annotations[options.AutoSearchAnnotation]
+			reloaderEnabledValue = annotations[options.ReloaderAutoAnnotation]
+		}
 		result := constants.NotUpdated
 		reloaderEnabled, err := strconv.ParseBool(reloaderEnabledValue)
 		if err == nil && reloaderEnabled {
-			result = updateContainers(upgradeFuncs, i, config, true)
+			result = invokeReloadStrategy(upgradeFuncs, i, config, true)
 		}
 
 		if result != constants.Updated && annotationValue != "" {
 			values := strings.Split(annotationValue, ",")
 			for _, value := range values {
-				if value == config.ResourceName {
-					result = updateContainers(upgradeFuncs, i, config, false)
+				value = strings.TrimSpace(value)
+				re := regexp.MustCompile("^" + value + "$")
+				if re.Match([]byte(config.ResourceName)) {
+					result = invokeReloadStrategy(upgradeFuncs, i, config, false)
 					if result == constants.Updated {
 						break
 					}
@@ -107,28 +172,78 @@ func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFunc
 			}
 		}
 
+		if result != constants.Updated && searchAnnotationValue == "true" {
+			matchAnnotationValue := config.ResourceAnnotations[options.SearchMatchAnnotation]
+			if matchAnnotationValue == "true" {
+				result = invokeReloadStrategy(upgradeFuncs, i, config, true)
+			}
+		}
+
 		if result == constants.Updated {
-			err = upgradeFuncs.UpdateFunc(clients, config.Namespace, i)
-			resourceName := util.ToObjectMeta(i).Name
+			accessor, err := meta.Accessor(i)
 			if err != nil {
-				logrus.Errorf("Update for '%s' of type '%s' in namespace '%s' failed with error %v", resourceName, upgradeFuncs.ResourceType, config.Namespace, err)
+				return err
+			}
+			resourceName := accessor.GetName()
+			err = upgradeFuncs.UpdateFunc(clients, config.Namespace, i)
+			if err != nil {
+				message := fmt.Sprintf("Update for '%s' of type '%s' in namespace '%s' failed with error %v", resourceName, upgradeFuncs.ResourceType, config.Namespace, err)
+				logrus.Errorf(message)
+				collectors.Reloaded.With(prometheus.Labels{"success": "false"}).Inc()
+				if recorder != nil {
+					recorder.Event(i, v1.EventTypeWarning, "ReloadFail", message)
+				}
+				return err
 			} else {
-				logrus.Infof("Changes detected in '%s' of type '%s' in namespace '%s'", config.ResourceName, config.Type, config.Namespace)
-				logrus.Infof("Updated '%s' of type '%s' in namespace '%s'", resourceName, upgradeFuncs.ResourceType, config.Namespace)
+				message := fmt.Sprintf("Changes detected in '%s' of type '%s' in namespace '%s'", config.ResourceName, config.Type, config.Namespace)
+				message += fmt.Sprintf(", Updated '%s' of type '%s' in namespace '%s'", resourceName, upgradeFuncs.ResourceType, config.Namespace)
+				logrus.Infof(message)
+				collectors.Reloaded.With(prometheus.Labels{"success": "true"}).Inc()
+				alert_on_reload, ok := os.LookupEnv("ALERT_ON_RELOAD")
+				if recorder != nil {
+					recorder.Event(i, v1.EventTypeNormal, "Reloaded", message)
+				}
+				if ok && alert_on_reload == "true" {
+					msg := fmt.Sprintf(
+						"Reloader detected changes in *%s* of type *%s* in namespace *%s*. Hence reloaded *%s* of type *%s* in namespace *%s*",
+						config.ResourceName, config.Type, config.Namespace, resourceName, upgradeFuncs.ResourceType, config.Namespace)
+					alert.SendWebhookAlert(msg)
+				}
 			}
 		}
 	}
-	return err
+	return nil
 }
 
 func getVolumeMountName(volumes []v1.Volume, mountType string, volumeName string) string {
 	for i := range volumes {
-		if mountType == constants.ConfigmapEnvVarPostfix && volumes[i].ConfigMap != nil && volumes[i].ConfigMap.Name == volumeName {
-			return volumes[i].Name
-		} else if mountType == constants.SecretEnvVarPostfix && volumes[i].Secret != nil && volumes[i].Secret.SecretName == volumeName {
-			return volumes[i].Name
+		if mountType == constants.ConfigmapEnvVarPostfix {
+			if volumes[i].ConfigMap != nil && volumes[i].ConfigMap.Name == volumeName {
+				return volumes[i].Name
+			}
+
+			if volumes[i].Projected != nil {
+				for j := range volumes[i].Projected.Sources {
+					if volumes[i].Projected.Sources[j].ConfigMap != nil && volumes[i].Projected.Sources[j].ConfigMap.Name == volumeName {
+						return volumes[i].Name
+					}
+				}
+			}
+		} else if mountType == constants.SecretEnvVarPostfix {
+			if volumes[i].Secret != nil && volumes[i].Secret.SecretName == volumeName {
+				return volumes[i].Name
+			}
+
+			if volumes[i].Projected != nil {
+				for j := range volumes[i].Projected.Sources {
+					if volumes[i].Projected.Sources[j].Secret != nil && volumes[i].Projected.Sources[j].Secret.Name == volumeName {
+						return volumes[i].Name
+					}
+				}
+			}
 		}
 	}
+
 	return ""
 }
 
@@ -171,7 +286,7 @@ func getContainerWithEnvReference(containers []v1.Container, resourceName string
 	return nil
 }
 
-func getContainerToUpdate(upgradeFuncs callbacks.RollingUpgradeFuncs, item interface{}, config util.Config, autoReload bool) *v1.Container {
+func getContainerUsingResource(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) *v1.Container {
 	volumes := upgradeFuncs.VolumesFunc(item)
 	containers := upgradeFuncs.ContainersFunc(item)
 	initContainers := upgradeFuncs.InitContainersFunc(item)
@@ -210,22 +325,82 @@ func getContainerToUpdate(upgradeFuncs callbacks.RollingUpgradeFuncs, item inter
 	return container
 }
 
-func updateContainers(upgradeFuncs callbacks.RollingUpgradeFuncs, item interface{}, config util.Config, autoReload bool) constants.Result {
+func invokeReloadStrategy(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
+	if options.ReloadStrategy == constants.AnnotationsReloadStrategy {
+		return updatePodAnnotations(upgradeFuncs, item, config, autoReload)
+	}
+
+	return updateContainerEnvVars(upgradeFuncs, item, config, autoReload)
+}
+
+func updatePodAnnotations(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
+	container := getContainerUsingResource(upgradeFuncs, item, config, autoReload)
+	if container == nil {
+		return constants.NoContainerFound
+	}
+
+	// Generate reloaded annotations. Attaching this to the item's annotation will trigger a rollout
+	// Note: the data on this struct is purely informational and is not used for future updates
+	reloadSource := util.NewReloadSourceFromConfig(config, []string{container.Name})
+	annotations, err := createReloadedAnnotations(&reloadSource)
+	if err != nil {
+		logrus.Errorf("Failed to create reloaded annotations for %s! error = %v", config.ResourceName, err)
+		return constants.NotUpdated
+	}
+
+	// Copy the all annotations to the item's annotations
+	pa := upgradeFuncs.PodAnnotationsFunc(item)
+	if pa == nil {
+		return constants.NotUpdated
+	}
+
+	for k, v := range annotations {
+		pa[k] = v
+	}
+
+	return constants.Updated
+}
+
+func createReloadedAnnotations(target *util.ReloadSource) (map[string]string, error) {
+	if target == nil {
+		return nil, errors.New("target is required")
+	}
+
+	// Create a single "last-invokeReloadStrategy-from" annotation that stores metadata about the
+	// resource that caused the last invokeReloadStrategy.
+	// Intentionally only storing the last item in order to keep
+	// the generated annotations as small as possible.
+	annotations := make(map[string]string)
+	lastReloadedResourceName := fmt.Sprintf("%s/%s",
+		constants.ReloaderAnnotationPrefix,
+		constants.LastReloadedFromAnnotation,
+	)
+
+	lastReloadedResource, err := json.Marshal(target)
+	if err != nil {
+		return nil, err
+	}
+
+	annotations[lastReloadedResourceName] = string(lastReloadedResource)
+	return annotations, nil
+}
+
+func updateContainerEnvVars(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
 	var result constants.Result
-	envar := constants.EnvVarPrefix + util.ConvertToEnvVarName(config.ResourceName) + "_" + config.Type
-	container := getContainerToUpdate(upgradeFuncs, item, config, autoReload)
+	envVar := constants.EnvVarPrefix + util.ConvertToEnvVarName(config.ResourceName) + "_" + config.Type
+	container := getContainerUsingResource(upgradeFuncs, item, config, autoReload)
 
 	if container == nil {
 		return constants.NoContainerFound
 	}
 
 	//update if env var exists
-	result = updateEnvVar(upgradeFuncs.ContainersFunc(item), envar, config.SHAValue)
+	result = updateEnvVar(upgradeFuncs.ContainersFunc(item), envVar, config.SHAValue)
 
 	// if no existing env var exists lets create one
 	if result == constants.NoEnvVarFound {
 		e := v1.EnvVar{
-			Name:  envar,
+			Name:  envVar,
 			Value: config.SHAValue,
 		}
 		container.Env = append(container.Env, e)
@@ -234,11 +409,11 @@ func updateContainers(upgradeFuncs callbacks.RollingUpgradeFuncs, item interface
 	return result
 }
 
-func updateEnvVar(containers []v1.Container, envar string, shaData string) constants.Result {
+func updateEnvVar(containers []v1.Container, envVar string, shaData string) constants.Result {
 	for i := range containers {
 		envs := containers[i].Env
 		for j := range envs {
-			if envs[j].Name == envar {
+			if envs[j].Name == envVar {
 				if envs[j].Value != shaData {
 					envs[j].Value = shaData
 					return constants.Updated

internal/pkg/leadership/leadership.go

@@ -0,0 +1,110 @@
+package leadership
+
+import (
+	"context"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stakater/Reloader/internal/pkg/controller"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+	"k8s.io/client-go/tools/leaderelection"
+	"k8s.io/client-go/tools/leaderelection/resourcelock"
+
+	coordinationv1 "k8s.io/client-go/kubernetes/typed/coordination/v1"
+)
+
+const healthPort string = ":9091"
+
+var (
+	// Used for liveness probe
+	m       sync.Mutex
+	healthy bool = true
+)
+
+func GetNewLock(client coordinationv1.CoordinationV1Interface, lockName, podname, namespace string) *resourcelock.LeaseLock {
+	return &resourcelock.LeaseLock{
+		LeaseMeta: v1.ObjectMeta{
+			Name:      lockName,
+			Namespace: namespace,
+		},
+		Client: client,
+		LockConfig: resourcelock.ResourceLockConfig{
+			Identity: podname,
+		},
+	}
+}
+
+// runLeaderElection runs leadership election. If an instance of the controller is the leader and stops leading it will shutdown.
+func RunLeaderElection(lock *resourcelock.LeaseLock, ctx context.Context, cancel context.CancelFunc, id string, controllers []*controller.Controller) {
+	// Construct channels for the controllers to use
+	var stopChannels []chan struct{}
+	for i := 0; i < len(controllers); i++ {
+		stop := make(chan struct{})
+		stopChannels = append(stopChannels, stop)
+	}
+
+	leaderelection.RunOrDie(ctx, leaderelection.LeaderElectionConfig{
+		Lock:            lock,
+		ReleaseOnCancel: true,
+		LeaseDuration:   15 * time.Second,
+		RenewDeadline:   10 * time.Second,
+		RetryPeriod:     2 * time.Second,
+		Callbacks: leaderelection.LeaderCallbacks{
+			OnStartedLeading: func(c context.Context) {
+				logrus.Info("became leader, starting controllers")
+				runControllers(controllers, stopChannels)
+			},
+			OnStoppedLeading: func() {
+				logrus.Info("no longer leader, shutting down")
+				stopControllers(stopChannels)
+				cancel()
+				m.Lock()
+				defer m.Unlock()
+				healthy = false
+			},
+			OnNewLeader: func(current_id string) {
+				if current_id == id {
+					logrus.Info("still the leader!")
+					return
+				}
+				logrus.Infof("new leader is %s", current_id)
+			},
+		},
+	})
+}
+
+func runControllers(controllers []*controller.Controller, stopChannels []chan struct{}) {
+	for i, c := range controllers {
+		c := c
+		go c.Run(1, stopChannels[i])
+	}
+}
+
+func stopControllers(stopChannels []chan struct{}) {
+	for _, c := range stopChannels {
+		close(c)
+	}
+}
+
+// Healthz serves the liveness probe endpoint. If leadership election is
+// enabled and a replica stops leading the liveness probe will fail and the
+// kubelet will restart the container.
+func Healthz() error {
+	http.HandleFunc("/live", healthz)
+	return http.ListenAndServe(healthPort, nil)
+}
+
+func healthz(w http.ResponseWriter, req *http.Request) {
+	m.Lock()
+	defer m.Unlock()
+	if healthy {
+		if i, err := w.Write([]byte("alive")); err != nil {
+			logrus.Infof("failed to write liveness response, wrote: %d bytes, got err: %s", i, err)
+		}
+		return
+	}
+
+	w.WriteHeader(http.StatusInternalServerError)
+}

internal/pkg/leadership/leadership_test.go

@@ -0,0 +1,213 @@
+package leadership
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"testing"
+	"time"
+
+	"github.com/sirupsen/logrus"
+	"github.com/stakater/Reloader/internal/pkg/constants"
+	"github.com/stakater/Reloader/internal/pkg/controller"
+	"github.com/stakater/Reloader/internal/pkg/handler"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
+	"github.com/stakater/Reloader/internal/pkg/options"
+	"github.com/stakater/Reloader/internal/pkg/testutil"
+	"github.com/stakater/Reloader/internal/pkg/util"
+	"github.com/stakater/Reloader/pkg/kube"
+)
+
+func TestMain(m *testing.M) {
+
+	testutil.CreateNamespace(testutil.Namespace, testutil.Clients.KubernetesClient)
+
+	logrus.Infof("Running Testcases")
+	retCode := m.Run()
+
+	testutil.DeleteNamespace(testutil.Namespace, testutil.Clients.KubernetesClient)
+
+	os.Exit(retCode)
+}
+
+func TestHealthz(t *testing.T) {
+	request, err := http.NewRequest(http.MethodGet, "/live", nil)
+	if err != nil {
+		t.Fatalf(("failed to create request"))
+	}
+
+	response := httptest.NewRecorder()
+
+	healthz(response, request)
+	got := response.Code
+	want := 200
+
+	if got != want {
+		t.Fatalf("got: %q, want: %q", got, want)
+	}
+
+	// Have the liveness probe serve a 500
+	healthy = false
+
+	request, err = http.NewRequest(http.MethodGet, "/live", nil)
+	if err != nil {
+		t.Fatalf(("failed to create request"))
+	}
+
+	response = httptest.NewRecorder()
+
+	healthz(response, request)
+	got = response.Code
+	want = 500
+
+	if got != want {
+		t.Fatalf("got: %q, want: %q", got, want)
+	}
+}
+
+// TestRunLeaderElection validates that the liveness endpoint serves 500 when
+// leadership election fails
+func TestRunLeaderElection(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.TODO())
+
+	lock := GetNewLock(testutil.Clients.KubernetesClient.CoordinationV1(), constants.LockName, testutil.Pod, testutil.Namespace)
+
+	go RunLeaderElection(lock, ctx, cancel, testutil.Pod, []*controller.Controller{})
+
+	// Liveness probe should be serving OK
+	request, err := http.NewRequest(http.MethodGet, "/live", nil)
+	if err != nil {
+		t.Fatalf(("failed to create request"))
+	}
+
+	response := httptest.NewRecorder()
+
+	healthz(response, request)
+	got := response.Code
+	want := 500
+
+	if got != want {
+		t.Fatalf("got: %q, want: %q", got, want)
+	}
+
+	// Cancel the leader election context, so leadership is released and
+	// live endpoint serves 500
+	cancel()
+
+	request, err = http.NewRequest(http.MethodGet, "/live", nil)
+	if err != nil {
+		t.Fatalf(("failed to create request"))
+	}
+
+	response = httptest.NewRecorder()
+
+	healthz(response, request)
+	got = response.Code
+	want = 500
+
+	if got != want {
+		t.Fatalf("got: %q, want: %q", got, want)
+	}
+}
+
+// TestRunLeaderElectionWithControllers tests that leadership election works
+// wiht real controllers and that on context cancellation the controllers stop
+// running.
+func TestRunLeaderElectionWithControllers(t *testing.T) {
+	t.Logf("Creating controller")
+	var controllers []*controller.Controller
+	for k := range kube.ResourceMap {
+		c, err := controller.NewController(testutil.Clients.KubernetesClient, k, testutil.Namespace, []string{}, map[string]string{}, metrics.NewCollectors())
+		if err != nil {
+			logrus.Fatalf("%s", err)
+		}
+
+		controllers = append(controllers, c)
+	}
+	time.Sleep(3 * time.Second)
+
+	lock := GetNewLock(testutil.Clients.KubernetesClient.CoordinationV1(), fmt.Sprintf("%s-%d", constants.LockName, 1), testutil.Pod, testutil.Namespace)
+
+	ctx, cancel := context.WithCancel(context.TODO())
+
+	// Start running leadership election, this also starts the controllers
+	go RunLeaderElection(lock, ctx, cancel, testutil.Pod, controllers)
+	time.Sleep(3 * time.Second)
+
+	// Create some stuff and do a thing
+	configmapName := testutil.ConfigmapNamePrefix + "-update-" + testutil.RandSeq(5)
+	configmapClient, err := testutil.CreateConfigMap(testutil.Clients.KubernetesClient, testutil.Namespace, configmapName, "www.google.com")
+	if err != nil {
+		t.Fatalf("Error while creating the configmap %v", err)
+	}
+
+	// Creating deployment
+	_, err = testutil.CreateDeployment(testutil.Clients.KubernetesClient, configmapName, testutil.Namespace, true)
+	if err != nil {
+		t.Fatalf("Error  in deployment creation: %v", err)
+	}
+
+	// Updating configmap for first time
+	updateErr := testutil.UpdateConfigMap(configmapClient, testutil.Namespace, configmapName, "", "www.stakater.com")
+	if updateErr != nil {
+		t.Fatalf("Configmap was not updated")
+	}
+	time.Sleep(3 * time.Second)
+
+	// Verifying deployment update
+	logrus.Infof("Verifying pod envvars has been created")
+	shaData := testutil.ConvertResourceToSHA(testutil.ConfigmapResourceType, testutil.Namespace, configmapName, "www.stakater.com")
+	config := util.Config{
+		Namespace:    testutil.Namespace,
+		ResourceName: configmapName,
+		SHAValue:     shaData,
+		Annotation:   options.ConfigmapUpdateOnChangeAnnotation,
+	}
+	deploymentFuncs := handler.GetDeploymentRollingUpgradeFuncs()
+	updated := testutil.VerifyResourceEnvVarUpdate(testutil.Clients, config, constants.ConfigmapEnvVarPostfix, deploymentFuncs)
+	if !updated {
+		t.Fatalf("Deployment was not updated")
+	}
+	time.Sleep(testutil.SleepDuration)
+
+	// Cancel the leader election context, so leadership is released
+	logrus.Info("shutting down controller from test")
+	cancel()
+	time.Sleep(5 * time.Second)
+
+	// Updating configmap again
+	updateErr = testutil.UpdateConfigMap(configmapClient, testutil.Namespace, configmapName, "", "www.stakater.com/new")
+	if updateErr != nil {
+		t.Fatalf("Configmap was not updated")
+	}
+
+	// Verifying that the deployment was not updated as leadership has been lost
+	logrus.Infof("Verifying pod envvars has not been updated")
+	shaData = testutil.ConvertResourceToSHA(testutil.ConfigmapResourceType, testutil.Namespace, configmapName, "www.stakater.com/new")
+	config = util.Config{
+		Namespace:    testutil.Namespace,
+		ResourceName: configmapName,
+		SHAValue:     shaData,
+		Annotation:   options.ConfigmapUpdateOnChangeAnnotation,
+	}
+	deploymentFuncs = handler.GetDeploymentRollingUpgradeFuncs()
+	updated = testutil.VerifyResourceEnvVarUpdate(testutil.Clients, config, constants.ConfigmapEnvVarPostfix, deploymentFuncs)
+	if updated {
+		t.Fatalf("Deployment was updated")
+	}
+
+	// Deleting deployment
+	err = testutil.DeleteDeployment(testutil.Clients.KubernetesClient, testutil.Namespace, configmapName)
+	if err != nil {
+		logrus.Errorf("Error while deleting the deployment %v", err)
+	}
+
+	// Deleting configmap
+	err = testutil.DeleteConfigMap(testutil.Clients.KubernetesClient, testutil.Namespace, configmapName)
+	if err != nil {
+		logrus.Errorf("Error while deleting the configmap %v", err)
+	}
+	time.Sleep(testutil.SleepDuration)
+}

internal/pkg/metrics/prometheus.go

@@ -0,0 +1,43 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/prometheus/client_golang/prometheus/promhttp"
+	"github.com/sirupsen/logrus"
+	"net/http"
+)
+
+type Collectors struct {
+	Reloaded *prometheus.CounterVec
+}
+
+func NewCollectors() Collectors {
+	reloaded := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "reloader",
+			Name:      "reload_executed_total",
+			Help:      "Counter of reloads executed by Reloader.",
+		},
+		[]string{"success"},
+	)
+
+	//set 0 as default value
+	reloaded.With(prometheus.Labels{"success": "true"}).Add(0)
+	reloaded.With(prometheus.Labels{"success": "false"}).Add(0)
+
+	return Collectors{
+		Reloaded: reloaded,
+	}
+}
+
+func SetupPrometheusEndpoint() Collectors {
+	collectors := NewCollectors()
+	prometheus.MustRegister(collectors.Reloaded)
+
+	go func() {
+		http.Handle("/metrics", promhttp.Handler())
+		logrus.Fatal(http.ListenAndServe(":9090", nil))
+	}()
+
+	return collectors
+}

internal/pkg/options/flags.go

@@ -1,10 +1,30 @@
 package options
 
+import "github.com/stakater/Reloader/internal/pkg/constants"
+
 var (
-	// ConfigmapUpdateOnChangeAnnotation is an annotation to detect changes in configmaps
+	// ConfigmapUpdateOnChangeAnnotation is an annotation to detect changes in
+	// configmaps specified by name
 	ConfigmapUpdateOnChangeAnnotation = "configmap.reloader.stakater.com/reload"
-	// SecretUpdateOnChangeAnnotation is an annotation to detect changes in secrets
+	// SecretUpdateOnChangeAnnotation is an annotation to detect changes in
+	// secrets specified by name
 	SecretUpdateOnChangeAnnotation = "secret.reloader.stakater.com/reload"
 	// ReloaderAutoAnnotation is an annotation to detect changes in secrets
 	ReloaderAutoAnnotation = "reloader.stakater.com/auto"
+	// AutoSearchAnnotation is an annotation to detect changes in
+	// configmaps or triggers with the SearchMatchAnnotation
+	AutoSearchAnnotation = "reloader.stakater.com/search"
+	// SearchMatchAnnotation is an annotation to tag secrets to be found with
+	// AutoSearchAnnotation
+	SearchMatchAnnotation = "reloader.stakater.com/match"
+	// LogFormat is the log format to use (json, or empty string for default)
+	LogFormat = ""
+	// IsArgoRollouts Adds support for argo rollouts
+	IsArgoRollouts = "false"
+	// ReloadStrategy Specify the update strategy
+	ReloadStrategy = constants.EnvVarsReloadStrategy
+	// ReloadOnCreate Adds support to watch create events
+	ReloadOnCreate = "false"
+	// EnableHA adds support for running multiple replicas via leadership election
+	EnableHA = false
 )

internal/pkg/testutil/kube.go

@@ -1,6 +1,9 @@
 package testutil
 
 import (
+	"context"
+	"encoding/json"
+	"fmt"
 	"math/rand"
 	"sort"
 	"strconv"
@@ -13,11 +16,13 @@ import (
 	"github.com/stakater/Reloader/internal/pkg/callbacks"
 	"github.com/stakater/Reloader/internal/pkg/constants"
 	"github.com/stakater/Reloader/internal/pkg/crypto"
+	"github.com/stakater/Reloader/internal/pkg/metrics"
 	"github.com/stakater/Reloader/internal/pkg/options"
 	"github.com/stakater/Reloader/internal/pkg/util"
 	"github.com/stakater/Reloader/pkg/kube"
 	appsv1 "k8s.io/api/apps/v1"
 	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/api/meta"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/client-go/kubernetes"
 	core_v1 "k8s.io/client-go/kubernetes/typed/core/v1"
@@ -31,9 +36,22 @@ var (
 	SecretResourceType = "secrets"
 )
 
+var (
+	Clients             = kube.GetClients()
+	Pod                 = "test-reloader-" + RandSeq(5)
+	Namespace           = "test-reloader-" + RandSeq(5)
+	ConfigmapNamePrefix = "testconfigmap-reloader"
+	SecretNamePrefix    = "testsecret-reloader"
+	Data                = "dGVzdFNlY3JldEVuY29kaW5nRm9yUmVsb2FkZXI="
+	NewData             = "dGVzdE5ld1NlY3JldEVuY29kaW5nRm9yUmVsb2FkZXI="
+	UpdatedData         = "dGVzdFVwZGF0ZWRTZWNyZXRFbmNvZGluZ0ZvclJlbG9hZGVy"
+	Collectors          = metrics.NewCollectors()
+	SleepDuration       = 3 * time.Second
+)
+
 // CreateNamespace creates namespace for testing
 func CreateNamespace(namespace string, client kubernetes.Interface) {
-	_, err := client.CoreV1().Namespaces().Create(&v1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: namespace}})
+	_, err := client.CoreV1().Namespaces().Create(context.TODO(), &v1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: namespace}}, metav1.CreateOptions{})
 	if err != nil {
 		logrus.Fatalf("Failed to create namespace for testing %v", err)
 	} else {
@@ -43,7 +61,7 @@ func CreateNamespace(namespace string, client kubernetes.Interface) {
 
 // DeleteNamespace deletes namespace for testing
 func DeleteNamespace(namespace string, client kubernetes.Interface) {
-	err := client.CoreV1().Namespaces().Delete(namespace, &metav1.DeleteOptions{})
+	err := client.CoreV1().Namespaces().Delete(context.TODO(), namespace, metav1.DeleteOptions{})
 	if err != nil {
 		logrus.Fatalf("Failed to delete namespace that was created for testing %v", err)
 	} else {
@@ -92,6 +110,38 @@ func getEnvVarSources(name string) []v1.EnvFromSource {
 
 func getVolumes(name string) []v1.Volume {
 	return []v1.Volume{
+		{
+			Name: "projectedconfigmap",
+			VolumeSource: v1.VolumeSource{
+				Projected: &v1.ProjectedVolumeSource{
+					Sources: []v1.VolumeProjection{
+						{
+							ConfigMap: &v1.ConfigMapProjection{
+								LocalObjectReference: v1.LocalObjectReference{
+									Name: name,
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+		{
+			Name: "projectedsecret",
+			VolumeSource: v1.VolumeSource{
+				Projected: &v1.ProjectedVolumeSource{
+					Sources: []v1.VolumeProjection{
+						{
+							Secret: &v1.SecretProjection{
+								LocalObjectReference: v1.LocalObjectReference{
+									Name: name,
+								},
+							},
+						},
+					},
+				},
+			},
+		},
 		{
 			Name: "configmap",
 			VolumeSource: v1.VolumeSource{
@@ -123,6 +173,14 @@ func getVolumeMounts(name string) []v1.VolumeMount {
 			MountPath: "etc/sec",
 			Name:      "secret",
 		},
+		{
+			MountPath: "etc/projectedconfig",
+			Name:      "projectedconfigmap",
+		},
+		{
+			MountPath: "etc/projectedsec",
+			Name:      "projectedsecret",
+		},
 	}
 }
 
@@ -389,6 +447,28 @@ func GetDeploymentWithEnvVarSources(namespace string, deploymentName string) *ap
 	}
 }
 
+func GetDeploymentWithPodAnnotations(namespace string, deploymentName string, both bool) *appsv1.Deployment {
+	replicaset := int32(1)
+	deployment := &appsv1.Deployment{
+		ObjectMeta: getObjectMeta(namespace, deploymentName, false),
+		Spec: appsv1.DeploymentSpec{
+			Selector: &metav1.LabelSelector{
+				MatchLabels: map[string]string{"secondLabel": "temp"},
+			},
+			Replicas: &replicaset,
+			Strategy: appsv1.DeploymentStrategy{
+				Type: appsv1.RollingUpdateDeploymentStrategyType,
+			},
+			Template: getPodTemplateSpecWithEnvVarSources(deploymentName),
+		},
+	}
+	if !both {
+		deployment.ObjectMeta.Annotations = nil
+	}
+	deployment.Spec.Template.ObjectMeta.Annotations = getAnnotations(deploymentName, true)
+	return deployment
+}
+
 // GetDaemonSet provides daemonset for testing
 func GetDaemonSet(namespace string, daemonsetName string) *appsv1.DaemonSet {
 	return &appsv1.DaemonSet{
@@ -500,12 +580,12 @@ func GetSecretWithUpdatedLabel(namespace string, secretName string, label string
 	}
 }
 
-// GetResourceSHA returns the SHA value of given environment variable
-func GetResourceSHA(containers []v1.Container, envar string) string {
+// GetResourceSHAFromEnvVar returns the SHA value of given environment variable
+func GetResourceSHAFromEnvVar(containers []v1.Container, envVar string) string {
 	for i := range containers {
 		envs := containers[i].Env
 		for j := range envs {
-			if envs[j].Name == envar {
+			if envs[j].Name == envVar {
 				return envs[j].Value
 			}
 		}
@@ -513,7 +593,29 @@ func GetResourceSHA(containers []v1.Container, envar string) string {
 	return ""
 }
 
-//ConvertResourceToSHA generates SHA from secret or configmap data
+// GetResourceSHAFromAnnotation returns the SHA value of given environment variable
+func GetResourceSHAFromAnnotation(podAnnotations map[string]string) string {
+	lastReloadedResourceName := fmt.Sprintf("%s/%s",
+		constants.ReloaderAnnotationPrefix,
+		constants.LastReloadedFromAnnotation,
+	)
+
+	annotationJson, ok := podAnnotations[lastReloadedResourceName]
+	if !ok {
+		return ""
+	}
+
+	var last util.ReloadSource
+	bytes := []byte(annotationJson)
+	err := json.Unmarshal(bytes, &last)
+	if err != nil {
+		return ""
+	}
+
+	return last.Hash
+}
+
+// ConvertResourceToSHA generates SHA from secret or configmap data
 func ConvertResourceToSHA(resourceType string, namespace string, resourceName string, data string) string {
 	values := []string{}
 	if resourceType == SecretResourceType {
@@ -535,7 +637,7 @@ func ConvertResourceToSHA(resourceType string, namespace string, resourceName st
 func CreateConfigMap(client kubernetes.Interface, namespace string, configmapName string, data string) (core_v1.ConfigMapInterface, error) {
 	logrus.Infof("Creating configmap")
 	configmapClient := client.CoreV1().ConfigMaps(namespace)
-	_, err := configmapClient.Create(GetConfigmap(namespace, configmapName, data))
+	_, err := configmapClient.Create(context.TODO(), GetConfigmap(namespace, configmapName, data), metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return configmapClient, err
 }
@@ -544,7 +646,7 @@ func CreateConfigMap(client kubernetes.Interface, namespace string, configmapNam
 func CreateSecret(client kubernetes.Interface, namespace string, secretName string, data string) (core_v1.SecretInterface, error) {
 	logrus.Infof("Creating secret")
 	secretClient := client.CoreV1().Secrets(namespace)
-	_, err := secretClient.Create(GetSecret(namespace, secretName, data))
+	_, err := secretClient.Create(context.TODO(), GetSecret(namespace, secretName, data), metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return secretClient, err
 }
@@ -559,7 +661,7 @@ func CreateDeployment(client kubernetes.Interface, deploymentName string, namesp
 	} else {
 		deploymentObj = GetDeploymentWithEnvVars(namespace, deploymentName)
 	}
-	deployment, err := deploymentClient.Create(deploymentObj)
+	deployment, err := deploymentClient.Create(context.TODO(), deploymentObj, metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return deployment, err
 }
@@ -574,7 +676,7 @@ func CreateDeploymentConfig(client appsclient.Interface, deploymentName string,
 	} else {
 		deploymentConfigObj = GetDeploymentConfigWithEnvVars(namespace, deploymentName)
 	}
-	deploymentConfig, err := deploymentConfigsClient.Create(deploymentConfigObj)
+	deploymentConfig, err := deploymentConfigsClient.Create(context.TODO(), deploymentConfigObj, metav1.CreateOptions{})
 	time.Sleep(5 * time.Second)
 	return deploymentConfig, err
 }
@@ -589,7 +691,7 @@ func CreateDeploymentWithInitContainer(client kubernetes.Interface, deploymentNa
 	} else {
 		deploymentObj = GetDeploymentWithInitContainerAndEnv(namespace, deploymentName)
 	}
-	deployment, err := deploymentClient.Create(deploymentObj)
+	deployment, err := deploymentClient.Create(context.TODO(), deploymentObj, metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return deployment, err
 }
@@ -599,7 +701,30 @@ func CreateDeploymentWithEnvVarSource(client kubernetes.Interface, deploymentNam
 	logrus.Infof("Creating Deployment")
 	deploymentClient := client.AppsV1().Deployments(namespace)
 	deploymentObj := GetDeploymentWithEnvVarSources(namespace, deploymentName)
-	deployment, err := deploymentClient.Create(deploymentObj)
+	deployment, err := deploymentClient.Create(context.TODO(), deploymentObj, metav1.CreateOptions{})
+	time.Sleep(3 * time.Second)
+	return deployment, err
+
+}
+
+// CreateDeploymentWithPodAnnotations creates a deployment in given namespace and returns the Deployment
+func CreateDeploymentWithPodAnnotations(client kubernetes.Interface, deploymentName string, namespace string, both bool) (*appsv1.Deployment, error) {
+	logrus.Infof("Creating Deployment")
+	deploymentClient := client.AppsV1().Deployments(namespace)
+	deploymentObj := GetDeploymentWithPodAnnotations(namespace, deploymentName, both)
+	deployment, err := deploymentClient.Create(context.TODO(), deploymentObj, metav1.CreateOptions{})
+	time.Sleep(3 * time.Second)
+	return deployment, err
+}
+
+// CreateDeploymentWithEnvVarSourceAndAnnotations returns a deployment in given
+// namespace with given annotations.
+func CreateDeploymentWithEnvVarSourceAndAnnotations(client kubernetes.Interface, deploymentName string, namespace string, annotations map[string]string) (*appsv1.Deployment, error) {
+	logrus.Infof("Creating Deployment")
+	deploymentClient := client.AppsV1().Deployments(namespace)
+	deploymentObj := GetDeploymentWithEnvVarSources(namespace, deploymentName)
+	deploymentObj.Annotations = annotations
+	deployment, err := deploymentClient.Create(context.TODO(), deploymentObj, metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return deployment, err
 }
@@ -614,7 +739,7 @@ func CreateDaemonSet(client kubernetes.Interface, daemonsetName string, namespac
 	} else {
 		daemonsetObj = GetDaemonSetWithEnvVars(namespace, daemonsetName)
 	}
-	daemonset, err := daemonsetClient.Create(daemonsetObj)
+	daemonset, err := daemonsetClient.Create(context.TODO(), daemonsetObj, metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return daemonset, err
 }
@@ -629,7 +754,7 @@ func CreateStatefulSet(client kubernetes.Interface, statefulsetName string, name
 	} else {
 		statefulsetObj = GetStatefulSetWithEnvVar(namespace, statefulsetName)
 	}
-	statefulset, err := statefulsetClient.Create(statefulsetObj)
+	statefulset, err := statefulsetClient.Create(context.TODO(), statefulsetObj, metav1.CreateOptions{})
 	time.Sleep(3 * time.Second)
 	return statefulset, err
 }
@@ -637,7 +762,7 @@ func CreateStatefulSet(client kubernetes.Interface, statefulsetName string, name
 // DeleteDeployment creates a deployment in given namespace and returns the error if any
 func DeleteDeployment(client kubernetes.Interface, namespace string, deploymentName string) error {
 	logrus.Infof("Deleting Deployment")
-	deploymentError := client.AppsV1().Deployments(namespace).Delete(deploymentName, &metav1.DeleteOptions{})
+	deploymentError := client.AppsV1().Deployments(namespace).Delete(context.TODO(), deploymentName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return deploymentError
 }
@@ -645,7 +770,7 @@ func DeleteDeployment(client kubernetes.Interface, namespace string, deploymentN
 // DeleteDeploymentConfig deletes a deploymentConfig in given namespace and returns the error if any
 func DeleteDeploymentConfig(client appsclient.Interface, namespace string, deploymentConfigName string) error {
 	logrus.Infof("Deleting DeploymentConfig")
-	deploymentConfigError := client.AppsV1().DeploymentConfigs(namespace).Delete(deploymentConfigName, &metav1.DeleteOptions{})
+	deploymentConfigError := client.AppsV1().DeploymentConfigs(namespace).Delete(context.TODO(), deploymentConfigName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return deploymentConfigError
 }
@@ -653,7 +778,7 @@ func DeleteDeploymentConfig(client appsclient.Interface, namespace string, deplo
 // DeleteDaemonSet creates a daemonset in given namespace and returns the error if any
 func DeleteDaemonSet(client kubernetes.Interface, namespace string, daemonsetName string) error {
 	logrus.Infof("Deleting DaemonSet %s", daemonsetName)
-	daemonsetError := client.AppsV1().DaemonSets(namespace).Delete(daemonsetName, &metav1.DeleteOptions{})
+	daemonsetError := client.AppsV1().DaemonSets(namespace).Delete(context.TODO(), daemonsetName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return daemonsetError
 }
@@ -661,7 +786,7 @@ func DeleteDaemonSet(client kubernetes.Interface, namespace string, daemonsetNam
 // DeleteStatefulSet creates a statefulset in given namespace and returns the error if any
 func DeleteStatefulSet(client kubernetes.Interface, namespace string, statefulsetName string) error {
 	logrus.Infof("Deleting StatefulSet %s", statefulsetName)
-	statefulsetError := client.AppsV1().StatefulSets(namespace).Delete(statefulsetName, &metav1.DeleteOptions{})
+	statefulsetError := client.AppsV1().StatefulSets(namespace).Delete(context.TODO(), statefulsetName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return statefulsetError
 }
@@ -675,7 +800,7 @@ func UpdateConfigMap(configmapClient core_v1.ConfigMapInterface, namespace strin
 	} else {
 		configmap = GetConfigmap(namespace, configmapName, data)
 	}
-	_, updateErr := configmapClient.Update(configmap)
+	_, updateErr := configmapClient.Update(context.TODO(), configmap, metav1.UpdateOptions{})
 	time.Sleep(3 * time.Second)
 	return updateErr
 }
@@ -689,7 +814,7 @@ func UpdateSecret(secretClient core_v1.SecretInterface, namespace string, secret
 	} else {
 		secret = GetSecret(namespace, secretName, data)
 	}
-	_, updateErr := secretClient.Update(secret)
+	_, updateErr := secretClient.Update(context.TODO(), secret, metav1.UpdateOptions{})
 	time.Sleep(3 * time.Second)
 	return updateErr
 }
@@ -697,7 +822,7 @@ func UpdateSecret(secretClient core_v1.SecretInterface, namespace string, secret
 // DeleteConfigMap deletes a configmap in given namespace and returns the error if any
 func DeleteConfigMap(client kubernetes.Interface, namespace string, configmapName string) error {
 	logrus.Infof("Deleting configmap %q.\n", configmapName)
-	err := client.CoreV1().ConfigMaps(namespace).Delete(configmapName, &metav1.DeleteOptions{})
+	err := client.CoreV1().ConfigMaps(namespace).Delete(context.TODO(), configmapName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return err
 }
@@ -705,7 +830,7 @@ func DeleteConfigMap(client kubernetes.Interface, namespace string, configmapNam
 // DeleteSecret deletes a secret in given namespace and returns the error if any
 func DeleteSecret(client kubernetes.Interface, namespace string, secretName string) error {
 	logrus.Infof("Deleting secret %q.\n", secretName)
-	err := client.CoreV1().Secrets(namespace).Delete(secretName, &metav1.DeleteOptions{})
+	err := client.CoreV1().Secrets(namespace).Delete(context.TODO(), secretName, metav1.DeleteOptions{})
 	time.Sleep(3 * time.Second)
 	return err
 }
@@ -720,14 +845,20 @@ func RandSeq(n int) string {
 	return string(b)
 }
 
-// VerifyResourceUpdate verifies whether the rolling upgrade happened or not
-func VerifyResourceUpdate(clients kube.Clients, config util.Config, envVarPostfix string, upgradeFuncs callbacks.RollingUpgradeFuncs) bool {
+// VerifyResourceEnvVarUpdate verifies whether the rolling upgrade happened or not
+func VerifyResourceEnvVarUpdate(clients kube.Clients, config util.Config, envVarPostfix string, upgradeFuncs callbacks.RollingUpgradeFuncs) bool {
 	items := upgradeFuncs.ItemsFunc(clients, config.Namespace)
 	for _, i := range items {
 		containers := upgradeFuncs.ContainersFunc(i)
+		accessor, err := meta.Accessor(i)
+		if err != nil {
+			return false
+		}
+		annotations := accessor.GetAnnotations()
 		// match statefulsets with the correct annotation
-		annotationValue := util.ToObjectMeta(i).Annotations[config.Annotation]
-		reloaderEnabledValue := util.ToObjectMeta(i).Annotations[options.ReloaderAutoAnnotation]
+		annotationValue := annotations[config.Annotation]
+		searchAnnotationValue := annotations[options.AutoSearchAnnotation]
+		reloaderEnabledValue := annotations[options.ReloaderAutoAnnotation]
 		reloaderEnabled, err := strconv.ParseBool(reloaderEnabledValue)
 		matches := false
 		if err == nil && reloaderEnabled {
@@ -735,16 +866,64 @@ func VerifyResourceUpdate(clients kube.Clients, config util.Config, envVarPostfi
 		} else if annotationValue != "" {
 			values := strings.Split(annotationValue, ",")
 			for _, value := range values {
+				value = strings.Trim(value, " ")
 				if value == config.ResourceName {
 					matches = true
 					break
 				}
 			}
+		} else if searchAnnotationValue == "true" {
+			if config.ResourceAnnotations[options.SearchMatchAnnotation] == "true" {
+				matches = true
+			}
 		}
 
 		if matches {
 			envName := constants.EnvVarPrefix + util.ConvertToEnvVarName(config.ResourceName) + "_" + envVarPostfix
-			updated := GetResourceSHA(containers, envName)
+			updated := GetResourceSHAFromEnvVar(containers, envName)
+			if updated == config.SHAValue {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// VerifyResourceAnnotationUpdate verifies whether the rolling upgrade happened or not
+func VerifyResourceAnnotationUpdate(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs) bool {
+	items := upgradeFuncs.ItemsFunc(clients, config.Namespace)
+	for _, i := range items {
+		podAnnotations := upgradeFuncs.PodAnnotationsFunc(i)
+		accessor, err := meta.Accessor(i)
+		if err != nil {
+			return false
+		}
+		annotations := accessor.GetAnnotations()
+		// match statefulsets with the correct annotation
+		annotationValue := annotations[config.Annotation]
+		searchAnnotationValue := annotations[options.AutoSearchAnnotation]
+		reloaderEnabledValue := annotations[options.ReloaderAutoAnnotation]
+		reloaderEnabled, err := strconv.ParseBool(reloaderEnabledValue)
+		matches := false
+		if err == nil && reloaderEnabled {
+			matches = true
+		} else if annotationValue != "" {
+			values := strings.Split(annotationValue, ",")
+			for _, value := range values {
+				value = strings.Trim(value, " ")
+				if value == config.ResourceName {
+					matches = true
+					break
+				}
+			}
+		} else if searchAnnotationValue == "true" {
+			if config.ResourceAnnotations[options.SearchMatchAnnotation] == "true" {
+				matches = true
+			}
+		}
+
+		if matches {
+			updated := GetResourceSHAFromAnnotation(podAnnotations)
 			if updated == config.SHAValue {
 				return true
 			}

internal/pkg/util/config.go

@@ -8,31 +8,34 @@ import (
 
 //Config contains rolling upgrade configuration parameters
 type Config struct {
-	Namespace    string
-	ResourceName string
-	Annotation   string
-	SHAValue     string
-	Type         string
+	Namespace           string
+	ResourceName        string
+	ResourceAnnotations map[string]string
+	Annotation          string
+	SHAValue            string
+	Type                string
 }
 
 // GetConfigmapConfig provides utility config for configmap
 func GetConfigmapConfig(configmap *v1.ConfigMap) Config {
 	return Config{
-		Namespace:    configmap.Namespace,
-		ResourceName: configmap.Name,
-		Annotation:   options.ConfigmapUpdateOnChangeAnnotation,
-		SHAValue:     GetSHAfromConfigmap(configmap.Data),
-		Type:         constants.ConfigmapEnvVarPostfix,
+		Namespace:           configmap.Namespace,
+		ResourceName:        configmap.Name,
+		ResourceAnnotations: configmap.Annotations,
+		Annotation:          options.ConfigmapUpdateOnChangeAnnotation,
+		SHAValue:            GetSHAfromConfigmap(configmap),
+		Type:                constants.ConfigmapEnvVarPostfix,
 	}
 }
 
 // GetSecretConfig provides utility config for secret
 func GetSecretConfig(secret *v1.Secret) Config {
 	return Config{
-		Namespace:    secret.Namespace,
-		ResourceName: secret.Name,
-		Annotation:   options.SecretUpdateOnChangeAnnotation,
-		SHAValue:     GetSHAfromSecret(secret.Data),
-		Type:         constants.SecretEnvVarPostfix,
+		Namespace:           secret.Namespace,
+		ResourceName:        secret.Name,
+		ResourceAnnotations: secret.Annotations,
+		Annotation:          options.SecretUpdateOnChangeAnnotation,
+		SHAValue:            GetSHAfromSecret(secret.Data),
+		Type:                constants.SecretEnvVarPostfix,
 	}
 }

internal/pkg/util/reload_source.go

@@ -0,0 +1,39 @@
+package util
+
+import "time"
+
+type ReloadSource struct {
+	Type          string   `json:"type"`
+	Name          string   `json:"name"`
+	Namespace     string   `json:"namespace"`
+	Hash          string   `json:"hash"`
+	ContainerRefs []string `json:"containerRefs"`
+	ObservedAt    int64    `json:"observedAt"`
+}
+
+func NewReloadSource(
+	resourceName string,
+	resourceNamespace string,
+	resourceType string,
+	resourceHash string,
+	containerRefs []string,
+) ReloadSource {
+	return ReloadSource{
+		ObservedAt:    time.Now().Unix(),
+		Name:          resourceName,
+		Namespace:     resourceNamespace,
+		Type:          resourceType,
+		Hash:          resourceHash,
+		ContainerRefs: containerRefs,
+	}
+}
+
+func NewReloadSourceFromConfig(config Config, containerRefs []string) ReloadSource {
+	return NewReloadSource(
+		config.ResourceName,
+		config.Namespace,
+		config.Type,
+		config.SHAValue,
+		containerRefs,
+	)
+}

internal/pkg/util/util.go

@@ -2,10 +2,12 @@ package util
 
 import (
 	"bytes"
+	"encoding/base64"
 	"sort"
 	"strings"
 
 	"github.com/stakater/Reloader/internal/pkg/crypto"
+	v1 "k8s.io/api/core/v1"
 )
 
 // ConvertToEnvVarName converts the given text into a usable env var
@@ -29,11 +31,14 @@ func ConvertToEnvVarName(text string) string {
 	return buffer.String()
 }
 
-func GetSHAfromConfigmap(data map[string]string) string {
+func GetSHAfromConfigmap(configmap *v1.ConfigMap) string {
 	values := []string{}
-	for k, v := range data {
+	for k, v := range configmap.Data {
 		values = append(values, k+"="+v)
 	}
+	for k, v := range configmap.BinaryData {
+		values = append(values, k+"="+base64.StdEncoding.EncodeToString(v))
+	}
 	sort.Strings(values)
 	return crypto.GenerateSHA(strings.Join(values, ";"))
 }
@@ -49,6 +54,8 @@ func GetSHAfromSecret(data map[string][]byte) string {
 
 type List []string
 
+type Map map[string]string
+
 func (l *List) Contains(s string) bool {
 	for _, v := range *l {
 		if v == s {

internal/pkg/util/util_test.go

@@ -2,6 +2,8 @@ package util
 
 import (
 	"testing"
+
+	v1 "k8s.io/api/core/v1"
 )
 
 func TestConvertToEnvVarName(t *testing.T) {
@@ -11,3 +13,35 @@ func TestConvertToEnvVarName(t *testing.T) {
 		t.Errorf("Failed to convert data into environment variable")
 	}
 }
+
+func TestGetHashFromConfigMap(t *testing.T) {
+	data := map[*v1.ConfigMap]string{
+		{
+			Data: map[string]string{"test": "test"},
+		}: "Only Data",
+		{
+			Data:       map[string]string{"test": "test"},
+			BinaryData: map[string][]byte{"bintest": []byte("test")},
+		}: "Both Data and BinaryData",
+		{
+			BinaryData: map[string][]byte{"bintest": []byte("test")},
+		}: "Only BinaryData",
+	}
+	converted := map[string]string{}
+	for cm, cmName := range data {
+		converted[cmName] = GetSHAfromConfigmap(cm)
+	}
+
+	// Test that the has for each configmap is really unique
+	for cmName, cmHash := range converted {
+		count := 0
+		for _, cmHash2 := range converted {
+			if cmHash == cmHash2 {
+				count++
+			}
+		}
+		if count > 1 {
+			t.Errorf("Found duplicate hashes for %v", cmName)
+		}
+	}
+}

okteto.yml

@@ -0,0 +1,17 @@
+dev:
+  reloader-reloader:
+    image: okteto/golang:1
+    command: bash
+    volumes:
+      - /go/pkg/
+      - /root/.cache/go-build/
+    sync:
+      - .:/app
+    forward:
+      - 2345:2345
+    workdir: /app
+    autocreate: true
+    securityContext:
+      capabilities:
+        add:
+          - SYS_PTRACE

pkg/kube/client.go

@@ -1,10 +1,12 @@
 package kube
 
 import (
+	"context"
 	"os"
 
 	"k8s.io/client-go/tools/clientcmd"
 
+	argorollout "github.com/argoproj/argo-rollouts/pkg/client/clientset/versioned"
 	appsclient "github.com/openshift/client-go/apps/clientset/versioned"
 	"github.com/sirupsen/logrus"
 	"k8s.io/client-go/kubernetes"
@@ -15,6 +17,7 @@ import (
 type Clients struct {
 	KubernetesClient    kubernetes.Interface
 	OpenshiftAppsClient appsclient.Interface
+	ArgoRolloutClient   argorollout.Interface
 }
 
 var (
@@ -38,18 +41,34 @@ func GetClients() Clients {
 		}
 	}
 
+	var rolloutClient *argorollout.Clientset
+
+	rolloutClient, err = GetArgoRolloutClient()
+	if err != nil {
+		logrus.Warnf("Unable to create ArgoRollout client error = %v", err)
+	}
+
 	return Clients{
 		KubernetesClient:    client,
 		OpenshiftAppsClient: appsClient,
+		ArgoRolloutClient:   rolloutClient,
 	}
 }
 
+func GetArgoRolloutClient() (*argorollout.Clientset, error) {
+	config, err := getConfig()
+	if err != nil {
+		return nil, err
+	}
+	return argorollout.NewForConfig(config)
+}
+
 func isOpenshift() bool {
 	client, err := GetKubernetesClient()
 	if err != nil {
 		logrus.Fatalf("Unable to create Kubernetes client error = %v", err)
 	}
-	_, err = client.RESTClient().Get().AbsPath("/apis/project.openshift.io").Do().Raw()
+	_, err = client.RESTClient().Get().AbsPath("/apis/project.openshift.io").Do(context.TODO()).Raw()
 	if err == nil {
 		logrus.Info("Environment: Openshift")
 		return true
@@ -78,7 +97,6 @@ func GetKubernetesClient() (*kubernetes.Clientset, error) {
 
 func getConfig() (*rest.Config, error) {
 	var config *rest.Config
-	var err error
 	kubeconfigPath := os.Getenv("KUBECONFIG")
 	if kubeconfigPath == "" {
 		kubeconfigPath = os.Getenv("HOME") + "/.kube/config"
@@ -95,9 +113,6 @@ func getConfig() (*rest.Config, error) {
 			return nil, err
 		}
 	}
-	if err != nil {
-		return nil, err
-	}
 
 	return config, nil
 }

stk.yaml

@@ -1,4 +0,0 @@
-issues:
-  kind: 1
-  url: https://aurorasolutions.atlassian.net
-  project: STK