[skip-ci] Update artifacts

chore: fix for POD_NAME and POD_NAMESPACE envs when enableHA is true

.github/workflows/pull_request.yaml

@@ -1,9 +1,18 @@
 name: Pull Request
 
 on:
-  pull_request_target:
+  pull_request:
     branches:
       - master
+    paths:
+      - '**'
+      - '!.markdownlint.yaml'
+      - '!.vale.ini'
+      - '!Dockerfile-docs'
+      - '!docs-nginx.conf'
+      - '!docs/**'
+      - '!theme_common'
+      - '!theme_override'
 
 env:
   DOCKER_FILE_PATH: Dockerfile
@@ -13,6 +22,12 @@ env:
   REGISTRY: ghcr.io
 
 jobs:
+  qa:
+    uses: stakater/.github/.github/workflows/pull_request_doc_qa.yaml@v0.0.82
+    with:
+      MD_CONFIG: .github/md_config.json
+      DOC_SRC: README.md
+      MD_LINT_CONFIG: .markdownlint.yaml
   build:
     runs-on: ubuntu-latest
     name: Build
@@ -44,7 +59,7 @@ jobs:
         make install
 
     - name: Run golangci-lint
-      uses: golangci/golangci-lint-action@v4
+      uses: golangci/golangci-lint-action@v5
       with:
         version: latest
         only-new-issues: false
@@ -92,70 +107,19 @@ jobs:
     - name: Set up Docker Buildx
       uses: docker/setup-buildx-action@v3
 
-    - name: Login to Docker Registry
-      uses: docker/login-action@v3
-      with:
-        username: ${{ secrets.STAKATER_DOCKERHUB_USERNAME }}
-        password: ${{ secrets.STAKATER_DOCKERHUB_PASSWORD }}
-
-    - name: Generate image repository path for Docker registry
-      run: |
-        echo DOCKER_IMAGE_REPOSITORY=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
-
-    - name: Build and Push Docker Image to Docker registry
-      uses: docker/build-push-action@v5
-      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: |
-          ${{ env.DOCKER_IMAGE_REPOSITORY }}:${{ 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: Build and Push Docker UBI Image to Docker registry
-      uses: docker/build-push-action@v5
-      with:
-        context: .
-        file: ${{ env.DOCKER_UBI_FILE_PATH  }}
-        pull: true
-        push: true
-        build-args: |
-          BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
-          BUILDER_IMAGE=${{ env.DOCKER_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
-        cache-to: type=inline
-        platforms: linux/amd64,linux/arm64
-        tags: |
-          ${{ env.DOCKER_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_UBI_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: Login to ghcr registry
-      uses: docker/login-action@v3
-      with:
-        registry: ${{env.REGISTRY}}
-        username: ${{github.actor}}
-        password: ${{secrets.GITHUB_TOKEN}}
-
     - name: Generate image repository path for ghcr registry
       run: |
         echo GHCR_IMAGE_REPOSITORY=${{env.REGISTRY}}/$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
 
-    - name: Build and Push Docker Image to ghcr registry
+    # To identify any broken changes in dockerfiles or dependencies
+  
+    - name: Build Docker Image
       uses: docker/build-push-action@v5
       with:
         context: .
         file: ${{ env.DOCKER_FILE_PATH  }}
         pull: true
-        push: true
+        push: false
         build-args: BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
         cache-to: type=inline
         platforms: linux/amd64,linux/arm,linux/arm64
@@ -166,13 +130,13 @@ jobs:
           org.opencontainers.image.created=${{ steps.prep.outputs.created }}
           org.opencontainers.image.revision=${{ github.sha }}
 
-    - name: Build and Push Docker UBI Image to ghcr registry
+    - name: Build Docker UBI Image
       uses: docker/build-push-action@v5
       with:
         context: .
         file: ${{ env.DOCKER_UBI_FILE_PATH  }}
         pull: true
-        push: true
+        push: false
         build-args: |
           BUILD_PARAMETERS=${{ env.BUILD_PARAMETERS }}
           BUILDER_IMAGE=${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}
@@ -185,22 +149,22 @@ jobs:
           org.opencontainers.image.created=${{ steps.prep.outputs.created }}
           org.opencontainers.image.revision=${{ github.sha }}
 
-    - name: Comment on PR
-      uses: mshick/add-pr-comment@v2
-      if: always()
-      env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      with:
-        message-success: '@${{ github.actor }} Images are available for testing. `docker pull ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}`\n`docker pull ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_UBI_TAG }}`'
-        message-failure: '@${{ github.actor }} Yikes! You better fix it before anyone else finds out! [Build](https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha }}/checks) has Failed!'
-        allow-repeats: true
+    # - name: Comment on PR
+    #   uses: mshick/add-pr-comment@v2
+    #   if: always()
+    #   env:
+    #     GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    #   with:
+    #     message-success: '@${{ github.actor }} Images are available for testing. `docker pull ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_TAG }}`\n`docker pull ${{ env.GHCR_IMAGE_REPOSITORY }}:${{ steps.generate_tag.outputs.GIT_UBI_TAG }}`'
+    #     message-failure: '@${{ github.actor }} Yikes! You better fix it before anyone else finds out! [Build](https://github.com/${{ github.repository }}/commit/${{ github.event.pull_request.head.sha }}/checks) has Failed!'
+    #     allow-repeats: true
 
-    - 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 }}
+    # - 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/pull_request_docs.yaml

@@ -5,18 +5,23 @@ on:
     branches:
       - master
     paths:
-      - 'README.md'
+      - '.markdownlint.yaml'
+      - '.vale.ini'
+      - 'Dockerfile-docs'
+      - 'docs-nginx.conf'
       - 'docs/**'
+      - 'theme_common'
+      - 'theme_override'
 
 jobs:
   qa:
-    uses: stakater/.github/.github/workflows/pull_request_doc_qa.yaml@v0.0.71
+    uses: stakater/.github/.github/workflows/pull_request_doc_qa.yaml@v0.0.82
     with:
       MD_CONFIG: .github/md_config.json
-      DOC_SRC: README.md docs
+      DOC_SRC: docs
       MD_LINT_CONFIG: .markdownlint.yaml
   build:
-    uses: stakater/.github/.github/workflows/pull_request_container_build.yaml@v0.0.71
+    uses: stakater/.github/.github/workflows/pull_request_container_build.yaml@v0.0.82
     with:
       DOCKER_FILE_PATH: Dockerfile-docs
     secrets:

.github/workflows/push.yaml

@@ -4,6 +4,15 @@ on:
   push:
     branches:
       - master
+    paths:
+      - '**'
+      - '!.markdownlint.yaml'
+      - '!.vale.ini'
+      - '!Dockerfile-docs'
+      - '!docs-nginx.conf'
+      - '!docs/**'
+      - '!theme_common'
+      - '!theme_override'
 
 env:
   DOCKER_FILE_PATH: Dockerfile
@@ -23,7 +32,7 @@ jobs:
       - name: Check out code
         uses: actions/checkout@v4
         with:
-          token: ${{ secrets.STAKATER_GITHUB_TOKEN }}        
+          token: ${{ secrets.STAKATER_GITHUB_TOKEN }}
           fetch-depth: 0 # otherwise, you will fail to push refs to dest repo
 
       # Setting up helm binary
@@ -31,20 +40,20 @@ jobs:
         uses: azure/setup-helm@v4
         with:
           version: v3.11.3
-      
+
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
           go-version-file: 'go.mod'
           check-latest: true
           cache: true
-      
+
       - name: Install Dependencies
         run: |
           make install
 
       - name: Run golangci-lint
-        uses: golangci/golangci-lint-action@v4
+        uses: golangci/golangci-lint-action@v5
         with:
           version: latest
           only-new-issues: false
@@ -74,7 +83,7 @@ jobs:
 
       - name: Generate Tag
         id: generate_tag
-        uses: anothrNick/github-tag-action@1.67.0
+        uses: anothrNick/github-tag-action@1.70.0
         env:
           GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
           WITH_V: true
@@ -187,7 +196,7 @@ jobs:
       # Generate tag for operator without "v"
       - name: Generate Operator Tag
         id: generate_operator_tag
-        uses: anothrNick/github-tag-action@1.67.0
+        uses: anothrNick/github-tag-action@1.70.0
         env:
           GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
           WITH_V: false
@@ -202,7 +211,12 @@ jobs:
 
       - name: Helm Template
         run: |
-          helm template reloader deployments/kubernetes/chart/reloader/ > deployments/kubernetes/reloader.yaml
+          helm template reloader deployments/kubernetes/chart/reloader/ \
+            --set-string reloader.deployment.resources.limits.cpu=1 \
+            --set reloader.deployment.resources.limits.memory=128Mi \
+            --set reloader.deployment.resources.requests.cpu=10m \
+            --set reloader.deployment.resources.requests.memory=128Mi > 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
 
       - name: Remove labels and annotations from manifests
@@ -233,7 +247,6 @@ jobs:
           commit_username: stakater-user
           commit_email: stakater@gmail.com
 
-      
       # Commit back changes
       - name: Log info about `.git` directory permissions
         run: |
@@ -259,7 +272,7 @@ jobs:
           branch: ${{ github.ref }}
 
       - name: Push Latest Tag
-        uses: anothrNick/github-tag-action@1.67.0
+        uses: anothrNick/github-tag-action@1.70.0
         env:
           GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
           WITH_V: true

.github/workflows/push_docs.yaml

@@ -5,12 +5,18 @@ on:
     branches:
       - master
     paths:
-      - 'README.md'
+      - '.markdownlint.yaml'
+      - '.vale.ini'
+      - 'Dockerfile-docs'
+      - 'docs-nginx.conf'
       - 'docs/**'
+      - 'README.md'
+      - 'theme_common'
+      - 'theme_override'
 
 jobs:
   push:
-    uses: stakater/.github/.github/workflows/push_container.yaml@v0.0.71
+    uses: stakater/.github/.github/workflows/push_container.yaml@v0.0.82
     with:
       DOCKER_FILE_PATH: Dockerfile-docs
       RELEASE_BRANCH: master

.github/workflows/release.yaml

@@ -27,7 +27,7 @@ jobs:
         uses: goreleaser/goreleaser-action@master
         with:
           version: latest
-          args: release --rm-dist
+          args: release --clean
         env:
           GITHUB_TOKEN: ${{ secrets.STAKATER_GITHUB_TOKEN }}
 

.github/workflows/reloader-enterprise.yml

@@ -0,0 +1,18 @@
+name: Dispatch Event Reloader Enterprise
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  dispatch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger target repository workflow
+        run: |
+          curl -X POST \
+          -H "Accept: application/vnd.github.v3+json" \
+          -H "Authorization: token ${{ secrets.STAKATER_AB_TOKEN_FOR_RLDR }}" \
+          https://api.github.com/repos/stakater-ab/reloader-enterprise/dispatches \
+          -d '{"event_type":"trigger-event"}'

.gitignore

@@ -15,3 +15,4 @@ Reloader
 styles/
 site/
 /mkdocs.yml
+yq

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "theme_common"]
 	path = theme_common
-	url = git@github.com:stakater/stakater-docs-mkdocs-theme.git
+	url = https://github.com/stakater/stakater-docs-mkdocs-theme.git 

.goreleaser.yml

@@ -10,6 +10,7 @@ builds:
   - amd64
   - arm
   - arm64
+  - ppc64le
 archives:
 - name_template: "{{ .ProjectName }}_v{{ .Version }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
 snapshot:

.vale.ini

@@ -1,7 +1,7 @@
 StylesPath = styles
 MinAlertLevel = warning
 
-Packages = https://github.com/stakater/vale-package/releases/download/v0.0.17/Stakater.zip
+Packages = https://github.com/stakater/vale-package/releases/download/v0.0.29/Stakater.zip
 Vocab = Stakater
 
 # Only check MarkDown files

Dockerfile

@@ -2,7 +2,7 @@ ARG BUILDER_IMAGE
 ARG BASE_IMAGE
 
 # Build the manager binary
-FROM --platform=${BUILDPLATFORM} ${BUILDER_IMAGE:-golang:1.21.6} as builder
+FROM --platform=${BUILDPLATFORM} ${BUILDER_IMAGE:-golang:1.21.9} as builder
 
 ARG TARGETOS
 ARG TARGETARCH

Dockerfile-docs

@@ -17,7 +17,7 @@ RUN python theme_common/scripts/combine_mkdocs_config_yaml.py theme_common/mkdoc
 # build the docs
 RUN mkdocs build
 
-FROM nginxinc/nginx-unprivileged:1.25-alpine as deploy
+FROM nginxinc/nginx-unprivileged:1.27-alpine as deploy
 COPY --from=builder $HOME/application/site/ /usr/share/nginx/html/reloader/
 COPY docs-nginx.conf /etc/nginx/conf.d/default.conf
 

README.md

@@ -190,9 +190,19 @@ 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. Additionally, in the default Reloader deployment, the following resource limits and requests are set:
 
-Reloader can be configured to ignore the resources `secrets` and `configmaps` by passing the following arguments (`spec.template.spec.containers.args`) to its container :
+```yaml
+resources:
+  limits:
+    cpu: 150m
+    memory: 512Mi
+  requests:
+    cpu: 10m
+    memory: 128Mi
+```
+
+Reloader can be configured to ignore the resources `secrets` and `configmaps` by passing the following arguments (`spec.template.spec.containers.args`) to its container:
 
 | Argument                         | Description          |
 |----------------------------------|----------------------|
@@ -317,6 +327,7 @@ helm uninstall {{RELEASE_NAME}} -n {{NAMESPACE}}
 | `reloader.ignoreSecrets`          | To ignore secrets. Valid value are either `true` or `false`. Either `ignoreSecrets` or `ignoreConfigMaps` can be ignored, not both at the same time | boolean     | `false`   |
 | `reloader.ignoreConfigMaps`       | To ignore configMaps. Valid value are either `true` or `false`                                                                                      | boolean     | `false`   |
 | `reloader.reloadOnCreate`         | Enable reload on create events. Valid value are either `true` or `false`                                                                            | boolean     | `false`   |
+| `reloader.reloadOnDelete`         | Enable reload on delete events. Valid value are either `true` or `false`                                                                            | boolean     | `false`   |
 | `reloader.syncAfterRestart`       | Enable sync after Reloader restarts for **Add** events, works only when reloadOnCreate is `true`. Valid value are either `true` or `false`          | boolean     | `false`   |
 | `reloader.reloadStrategy`         | Strategy to trigger resource restart, set to either `default`, `env-vars` or `annotations`                                                          | enumeration | `default` |
 | `reloader.ignoreNamespaces`       | List of comma separated namespaces to ignore, if multiple are provided, they are combined with the AND operator                                     | string      | `""`      |
@@ -328,6 +339,7 @@ helm uninstall {{RELEASE_NAME}} -n {{NAMESPACE}}
 | `reloader.readOnlyRootFileSystem` | Enforce readOnlyRootFilesystem                                                                                                                      | boolean     | `false`   |
 | `reloader.legacy.rbac`            |                                                                                                                                                     | boolean     | `false`   |
 | `reloader.matchLabels`            | Pod labels to match                                                                                                                                 | map         | `{}`      |
+| `reloader.enableMetricsByNamespace`            | Expose an additional Prometheus counter of reloads by namespace (this metric may have high cardinality in clusters with many namespaces) | boolean         | `false`      |
 
 #### Deployment Reloader Parameters
 
@@ -374,14 +386,18 @@ helm uninstall {{RELEASE_NAME}} -n {{NAMESPACE}}
 - 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
 - `isOpenShift` Recent versions of OpenShift (tested on 4.13.3) require the specified user to be in an `uid` range which is dynamically assigned by the namespace. The solution is to unset the runAsUser variable via ``deployment.securityContext.runAsUser=null`` and let OpenShift assign it at install
 - `reloadOnCreate` controls how Reloader handles secrets being added to the cache for the first time. If `reloadOnCreate` is set to true:
-  1. Configmaps/secrets being added to the cache will cause Reloader to perform a rolling update of the associated workload
-  1. When applications are deployed for the first time, Reloader will perform a rolling update of the associated workload
-  1. If you are running Reloader in HA mode all workloads will have a rolling update performed when a new leader is elected
+    1. Configmaps/secrets being added to the cache will cause Reloader to perform a rolling update of the associated workload
+    1. When applications are deployed for the first time, Reloader will perform a rolling update of the associated workload
+    1. If you are running Reloader in HA mode all workloads will have a rolling update performed when a new leader is elected
+- `reloadOnDelete` controls how Reloader handles secrets being deleted. If `reloadOnDelete` is set to true:
+    1. Configmaps/secrets being deleted will cause Reloader to perform a rolling update of the associated workload
 - `serviceMonitor` will be removed in future releases of Reloader in favour of Pod monitor
 - If `reloadOnCreate` is set to false:
-  1. 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
-  1. In the worst case the window in which there can be no leader is 15s as this is the LeaseDuration
-- By default, `reloadOnCreate` and `syncAfterRestart` are both set to false. Both need to be enabled explicitly
+    1. 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
+    1. In the worst case the window in which there can be no leader is 15s as this is the LeaseDuration
+- If `reloadOnDelete` is set to false:
+    1. Deleting of configmaps/secrets has no effect to pods that references these resources.
+- By default, `reloadOnCreate`, `reloadOnDelete` and `syncAfterRestart` are all set to false. All need to be enabled explicitly
 
 ## Help
 

deployments/kubernetes/chart/reloader/Chart.yaml

@@ -3,8 +3,8 @@
 apiVersion: v1
 name: reloader
 description: Reloader chart that runs on kubernetes
-version: 1.0.84
-appVersion: v1.0.84
+version: 1.0.121
+appVersion: v1.0.121
 keywords:
   - Reloader
   - kubernetes

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

@@ -22,7 +22,7 @@ We truncate at 63 chars because some Kubernetes name fields are limited to this
 
 {{- define "reloader-labels.chart" -}}
 app: {{ template "reloader-fullname" . }}
-chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
 release: {{ .Release.Name | quote }}
 heritage: {{ .Release.Service | quote }}
 app.kubernetes.io/managed-by: {{ .Release.Service | quote }}

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

@@ -76,8 +76,23 @@ spec:
       - 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:
+        - name: GOMAXPROCS
+        {{- if .Values.reloader.deployment.gomaxprocsOverride }}
+          value: {{ .Values.reloader.deployment.gomaxprocsOverride | quote }}
+        {{- else }}
+          valueFrom:
+            resourceFieldRef:
+              resource: limits.cpu
+        {{- end }}
+        - name: GOMEMLIMIT
+        {{- if .Values.reloader.deployment.gomemlimitOverride }}
+          value: {{ .Values.reloader.deployment.gomemlimitOverride | quote }}
+        {{- else }}
+          valueFrom:
+            resourceFieldRef:
+              resource: limits.memory
+        {{- end }}
       {{- range $name, $value := .Values.reloader.deployment.env.open }}
       {{- if not (empty $value) }}
         - name: {{ $name | quote }}
@@ -129,8 +144,10 @@ spec:
             fieldRef:
               fieldPath: metadata.namespace
       {{- end }}
+      {{- if .Values.reloader.enableMetricsByNamespace }}
+        - name: METRICS_COUNT_BY_NAMESPACE
+          value: enabled
       {{- end }}
-
         ports:
         - name: http
           containerPort: 9090
@@ -171,7 +188,7 @@ spec:
           {{- . | toYaml | nindent 10 }}
           {{- end }}
       {{- end }}
-      {{- if or (.Values.reloader.logFormat) (.Values.reloader.ignoreSecrets) (.Values.reloader.ignoreNamespaces) (.Values.reloader.namespaceSelector) (.Values.reloader.resourceLabelSelector) (.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) (.Values.reloader.autoReloadAll)}}
+      {{- if or (.Values.reloader.logFormat) (.Values.reloader.ignoreSecrets) (.Values.reloader.ignoreNamespaces) (.Values.reloader.namespaceSelector) (.Values.reloader.resourceLabelSelector) (.Values.reloader.ignoreConfigMaps) (.Values.reloader.custom_annotations) (eq .Values.reloader.isArgoRollouts true) (eq .Values.reloader.reloadOnCreate true) (eq .Values.reloader.reloadOnDelete true) (ne .Values.reloader.reloadStrategy "default") (.Values.reloader.enableHA) (.Values.reloader.autoReloadAll)}}
         args:
           {{- if .Values.reloader.logFormat }}
           - "--log-format={{ .Values.reloader.logFormat }}"
@@ -231,6 +248,9 @@ spec:
           {{- if eq .Values.reloader.reloadOnCreate true }}
           - "--reload-on-create={{ .Values.reloader.reloadOnCreate }}"
           {{- end }}
+          {{- if eq .Values.reloader.reloadOnDelete true }}
+          - "--reload-on-delete={{ .Values.reloader.reloadOnDelete }}"
+          {{- end }}
           {{- if eq .Values.reloader.syncAfterRestart true }}
           - "--sync-after-restart={{ .Values.reloader.syncAfterRestart }}"
           {{- end }}

deployments/kubernetes/chart/reloader/tests/deployment_test.yaml

@@ -48,3 +48,16 @@ tests:
     asserts:
       - isEmpty:
           path: spec.template.spec.containers[0].securityContext
+
+  - it: template still sets POD_NAME and POD_NAMESPACE environment variables when enableHA is true
+    set:
+      reloader:
+        enableHA: true
+    asserts:
+      - contains:
+          path: spec.template.spec.containers[0].env
+          content:
+            name: POD_NAME
+            valueFrom:
+              fieldRef:
+                fieldPath: metadata.name

deployments/kubernetes/chart/reloader/values.yaml

@@ -18,6 +18,7 @@ reloader:
   ignoreSecrets: false
   ignoreConfigMaps: false
   reloadOnCreate: false
+  reloadOnDelete: false
   syncAfterRestart: false
   reloadStrategy: default # Set to default, env-vars or annotations
   ignoreNamespaces: "" # Comma separated list of namespaces to ignore
@@ -32,6 +33,8 @@ reloader:
   legacy:
     rbac: false
   matchLabels: {}
+  # Set to true to expose a prometheus counter of reloads by namespace (this metric may have high cardinality in clusters with many namespaces)
+  enableMetricsByNamespace: false
   deployment:
     # If you wish to run multiple replicas set reloader.enableHA = true
     replicas: 1
@@ -89,10 +92,10 @@ reloader:
     labels:
       provider: stakater
       group: com.stakater.platform
-      version: v1.0.84
+      version: v1.0.121
     image:
       name: ghcr.io/stakater/reloader
-      tag: v1.0.84
+      tag: v1.0.121
       pullPolicy: IfNotPresent
     # Support for extra environment variables.
     env:
@@ -144,6 +147,11 @@ reloader:
     # imagePullSecrets:
     #   - name: myregistrykey
 
+    # Put "0" in either to have go runtime ignore the set value.
+    # Otherwise, see https://pkg.go.dev/runtime#hdr-Environment_Variables for GOMAXPROCS and GOMEMLIMIT
+    gomaxprocsOverride: ""
+    gomemlimitOverride: ""
+
   service: {}
     # labels: {}
     # annotations: {}

deployments/kubernetes/manifests/deployment.yaml

@@ -17,9 +17,18 @@ spec:
         app: reloader-reloader
     spec:
       containers:
-        - image: "ghcr.io/stakater/reloader:v1.0.84"
+        - image: "ghcr.io/stakater/reloader:v1.0.121"
           imagePullPolicy: IfNotPresent
           name: reloader-reloader
+          env:
+            - name: GOMAXPROCS
+              valueFrom:
+                resourceFieldRef:
+                  resource: limits.cpu
+            - name: GOMEMLIMIT
+              valueFrom:
+                resourceFieldRef:
+                  resource: limits.memory
           ports:
             - name: http
               containerPort: 9090

deployments/kubernetes/reloader.yaml

@@ -8,7 +8,7 @@ metadata:
     meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-1.0.84"
+    chart: "reloader-1.0.121"
     release: "reloader"
     heritage: "Helm"
     app.kubernetes.io/managed-by: "Helm"
@@ -25,7 +25,7 @@ metadata:
     meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-1.0.84"
+    chart: "reloader-1.0.121"
     release: "reloader"
     heritage: "Helm"
     app.kubernetes.io/managed-by: "Helm"
@@ -92,7 +92,7 @@ metadata:
     meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-1.0.84"
+    chart: "reloader-1.0.121"
     release: "reloader"
     heritage: "Helm"
     app.kubernetes.io/managed-by: "Helm"
@@ -115,13 +115,13 @@ metadata:
     meta.helm.sh/release-name: "reloader"
   labels:
     app: reloader-reloader
-    chart: "reloader-1.0.84"
+    chart: "reloader-1.0.121"
     release: "reloader"
     heritage: "Helm"
     app.kubernetes.io/managed-by: "Helm"
     group: com.stakater.platform
     provider: stakater
-    version: v1.0.84
+    version: v1.0.121
   name: reloader-reloader
   namespace: default
 spec:
@@ -135,19 +135,27 @@ spec:
     metadata:
       labels:
         app: reloader-reloader
-        chart: "reloader-1.0.84"
+        chart: "reloader-1.0.121"
         release: "reloader"
         heritage: "Helm"
         app.kubernetes.io/managed-by: "Helm"
         group: com.stakater.platform
         provider: stakater
-        version: v1.0.84
+        version: v1.0.121
     spec:
       containers:
-      - image: "ghcr.io/stakater/reloader:v1.0.84"
+      - image: "ghcr.io/stakater/reloader:v1.0.121"
         imagePullPolicy: IfNotPresent
         name: reloader-reloader
-
+        env:
+        - name: GOMAXPROCS
+          valueFrom:
+            resourceFieldRef:
+              resource: limits.cpu
+        - name: GOMEMLIMIT
+          valueFrom:
+            resourceFieldRef:
+              resource: limits.memory
         ports:
         - name: http
           containerPort: 9090
@@ -172,6 +180,13 @@ spec:
 
         securityContext:
           {}
+        resources:
+          limits:
+            cpu: "1"
+            memory: 128Mi
+          requests:
+            cpu: 10m
+            memory: 128Mi
       securityContext: 
         runAsNonRoot: true
         runAsUser: 65534

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

@@ -23,6 +23,8 @@ reloader:
   legacy:
     rbac: false
   matchLabels: {}
+  # Set to true to expose a prometheus counter of reloads by namespace (this metric may have high cardinality in clusters with many namespaces)
+  enableMetricsByNamespace: false
   deployment:
     replicas: 1
     nodeSelector:

docs/Alerting.md

@@ -2,17 +2,17 @@
 
 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
+## Enabling
 
 In-order to enable this feature, you need to update the `reloader.env.secret` section of `values.yaml` providing the information needed for alert:
 
 ```yaml
-      ALERT_ON_RELOAD: [ true/false ] Default: false 
+      ALERT_ON_RELOAD: [ true/false ] Default: false
       ALERT_SINK: [ slack/teams/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
+## Slack Incoming-Webhook Creation Docs
 
 [Sending messages using Incoming Webhooks](https://api.slack.com/messaging/webhooks)

docs/Helm2-to-Helm3.md

@@ -8,7 +8,7 @@ There are 3 steps involved in migrating the Reloader from Helm2 to Helm3.
 
 ### Step 1
 
-Install the helm-2to3 plugin
+Install the `helm-2to3` plugin
 
 ```bash
 helm3 plugin install https://github.com/helm/helm-2to3

docs/How-it-works.md

@@ -1,12 +1,12 @@
-# How does Reloader work?
+# How Does Reloader Work?
 
 Reloader watches for `ConfigMap` and `Secret` and detects if there are changes in data of these objects. After change detection Reloader performs rolling upgrade on relevant Pods via associated `Deployment`, `Daemonset` and `Statefulset`.
 
-## How change detection works
+## How Does Change Detection Work?
 
 Reloader watches changes in `configmaps` and `secrets` data. As soon as it detects a change in these. It forwards these objects to an update handler which decides if and how to perform the rolling upgrade.
 
-## Requirements for rolling upgrade
+## Requirements for Rolling Upgrade
 
 To perform rolling upgrade a `deployment`, `daemonset` or `statefulset` must have
 
@@ -37,13 +37,13 @@ metadata:
 
 Above mentioned annotation are also work for `Daemonsets` `Statefulsets` and `Rollouts`
 
-## How Rolling upgrade works?
+## How Does Rolling Upgrade Work?
 
 When Reloader detects changes in configmap. It gets two objects of configmap. First object is an old configmap object which has a state before the latest change. Second object is new configmap object which contains latest changes. Reloader compares both objects and see whether any change in data occurred or not. If Reloader finds any change in new configmap object, only then, it moves forward with rolling upgrade.
 
 After that, Reloader gets the list of all `deployments`, `daemonsets` and `statefulset` and looks for above mentioned annotation for configmap. If the annotation value contains the configmap name, it then looks for an environment variable which can contain the configmap or secret data change hash.
 
-### Environment variable for Configmap
+### Environment Variable for ConfigMap
 
 If configmap name is foo then
 
@@ -51,7 +51,7 @@ If configmap name is foo then
 STAKATER_FOO_CONFIGMAP
 ```
 
-### Environment variable for Secret
+### Environment Variable for Secret
 
 If Secret name is foo then
 
@@ -63,7 +63,7 @@ If the environment variable is found then it gets its value and compares it with
 
 Note: Rolling upgrade also works in the same way for secrets.
 
-### Hash value Computation
+### Hash Value Computation
 
 Reloader uses SHA1 to compute hash value. SHA1 is used because it is efficient and less prone to collision.
 
@@ -77,6 +77,6 @@ helm --namespace {replace this with namespace name} template . > reloader.yaml
 
 The output file can then be used to deploy Reloader in specific namespace.
 
-## Compatibility with helm install and upgrade
+## Compatibility With Helm Install and Upgrade
 
 Reloader has no impact on helm deployment cycle. Reloader only injects an environment variable in  `deployment`, `daemonset` or `statefulset`. The environment variable contains the SHA1 value of configmap's or secret's data. So  if a deployment is created using Helm and Reloader updates the deployment, then next time you upgrade the helm release, Reloader will do nothing except changing that environment variable value in `deployment` , `daemonset` or `statefulset`.

docs/Reloader-vs-k8s-trigger-controller.md

@@ -21,7 +21,7 @@ Reloader and k8s-trigger-controller are both built for same purpose. So there ar
 
 Reloader supports deployment `rollout` as well as `daemonsets` and `statefulsets` `rollout`.
 
-### Hashing usage
+### Hashing Usage
 
 #### `k8s-trigger-controller`
 

docs/Verify-Reloader-Working.md

@@ -2,7 +2,7 @@
 
 Reloader's working can be verified by three ways.
 
-## Verify from logs
+## Verify From Logs
 
 Check the logs of Reloader and verify that you can see logs looks like below, if you are able to find these logs then it means Reloader is working.
 
@@ -14,11 +14,11 @@ Updated test-resource of type Deployment in namespace: test-reloader
 
 Below are the details that explain these logs:
 
-### test-object
+### `test-object`
 
 `test-object` is the name of a `secret` or a `deployment` in which change has been detected.
 
-### SECRET
+### `SECRET`
 
 `SECRET` is the type of `test-object`. It can either be `SECRET` or `CONFIGMAP`
 
@@ -30,11 +30,11 @@ Below are the details that explain these logs:
 
 `test-resource` is the name of resource which is going to be updated
 
-### Deployment
+### `Deployment`
 
 `Deployment` is the type of `test-resource`. It can either be a `Deployment`, `Daemonset` or `Statefulset`
 
-## Verify by checking the age of Pod
+## Verify by Checking the Age of Pod
 
 A pod's age can tell whether Reloader is working correctly or not. If you know that a change in a `secret` or `configmap` has occurred, then check the relevant Pod's age immediately. It should be newly created few moments ago.
 
@@ -42,7 +42,7 @@ A pod's age can tell whether Reloader is working correctly or not. If you know t
 
 `kubernetes dashboard` can be used to verify the working of Reloader. After a change in `secret` or `configmap`, check the relevant Pod's age from dashboard. It should be newly created few moments ago.
 
-### Verify from command line
+### Verify from Command Line
 
 After a change in `secret` or `configmap`. Run the below-mentioned command and verify that the pod is newly created.
 
@@ -50,7 +50,7 @@ After a change in `secret` or `configmap`. Run the below-mentioned command and v
 kubectl get pods <pod name> -n <namespace name>
 ```
 
-## Verify from metrics
+## Verify From Metrics
 
 Some metrics are exported to Prometheus endpoint `/metrics` on port `9090`.
 
@@ -60,3 +60,16 @@ When Reloader is unable to reload, `reloader_reload_executed_total{success="fals
 reloader_reload_executed_total{success="false"} 15
 reloader_reload_executed_total{success="true"} 12
 ```
+
+### Reloads by Namespace
+
+Reloader can also export a metric to show the number of reloads by namespace. This feature is disabled by default, as it can lead to high cardinality in clusters with many namespaces.
+
+The metric will have both `success` and `namespace` as attributes:
+
+```text
+reloader_reload_executed_total{success="false", namespace="some-namespace"} 2
+reloader_reload_executed_total{success="true", namespace="some-namespace"} 1
+```
+
+To opt in, set the environment variable `METRICS_COUNT_BY_NAMESPACE` to `enabled` or set the Helm value `reloader.enableMetricsByNamespace` to `true`.

go.mod

@@ -3,18 +3,18 @@ module github.com/stakater/Reloader
 go 1.21
 
 require (
-	github.com/argoproj/argo-rollouts v1.6.6
+	github.com/argoproj/argo-rollouts v1.7.1
 	github.com/openshift/api v3.9.0+incompatible
 	github.com/openshift/client-go v0.0.0-20231110140829-a6ca51f6d5ba
 	github.com/parnurzeal/gorequest v0.2.16
-	github.com/prometheus/client_golang v1.19.0
+	github.com/prometheus/client_golang v1.19.1
 	github.com/sirupsen/logrus v1.9.3
-	github.com/spf13/cobra v1.8.0
-	k8s.io/api v0.28.4
-	k8s.io/apimachinery v0.28.4
-	k8s.io/client-go v0.28.4
-	k8s.io/kubectl v0.28.4
-	k8s.io/utils v0.0.0-20230726121419-3b25d923346b
+	github.com/spf13/cobra v1.8.1
+	k8s.io/api v0.29.3
+	k8s.io/apimachinery v0.29.3
+	k8s.io/client-go v0.29.3
+	k8s.io/kubectl v0.29.3
+	k8s.io/utils v0.0.0-20240423183400-0849a56e8f22
 )
 
 require (
@@ -22,51 +22,50 @@ require (
 	github.com/cespare/xxhash/v2 v2.2.0 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/elazarl/goproxy v0.0.0-20221015165544-a0805db90819 // indirect
-	github.com/emicklei/go-restful/v3 v3.10.1 // indirect
+	github.com/emicklei/go-restful/v3 v3.11.0 // indirect
 	github.com/evanphx/json-patch v5.6.0+incompatible // indirect
-	github.com/go-logr/logr v1.2.4 // indirect
+	github.com/go-logr/logr v1.3.0 // indirect
 	github.com/go-openapi/jsonpointer v0.19.6 // indirect
 	github.com/go-openapi/jsonreference v0.20.2 // indirect
 	github.com/go-openapi/swag v0.22.3 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
+	github.com/golang/protobuf v1.5.4 // indirect
 	github.com/google/gnostic-models v0.6.8 // indirect
 	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
-	github.com/google/uuid v1.3.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
 	github.com/imdario/mergo v0.3.13 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // 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/v2 v2.0.0 // 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 v0.5.0 // indirect
+	github.com/prometheus/client_model v0.6.0 // indirect
 	github.com/prometheus/common v0.48.0 // indirect
 	github.com/prometheus/procfs v0.12.0 // indirect
 	github.com/smartystreets/goconvey v1.7.2 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
-	golang.org/x/net v0.20.0 // indirect
-	golang.org/x/oauth2 v0.16.0 // indirect
-	golang.org/x/sys v0.16.0 // indirect
-	golang.org/x/term v0.16.0 // indirect
-	golang.org/x/text v0.14.0 // indirect
+	golang.org/x/net v0.25.0 // indirect
+	golang.org/x/oauth2 v0.18.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/term v0.20.0 // indirect
+	golang.org/x/text v0.15.0 // indirect
 	golang.org/x/time v0.3.0 // indirect
-	google.golang.org/appengine v1.6.7 // indirect
-	google.golang.org/protobuf v1.32.0 // indirect
+	google.golang.org/appengine v1.6.8 // indirect
+	google.golang.org/protobuf v1.33.0 // 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 v2.100.1 // indirect
-	k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 // indirect
+	k8s.io/klog/v2 v2.110.1 // indirect
+	k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 // indirect
 	moul.io/http2curl v1.0.0 // indirect
 	sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect
-	sigs.k8s.io/structured-merge-diff/v4 v4.2.3 // indirect
-	sigs.k8s.io/yaml v1.3.0 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect
+	sigs.k8s.io/yaml v1.4.0 // indirect
 )
 
 // Replacements for argo-rollouts

go.sum

@@ -1,16 +1,15 @@
-github.com/argoproj/argo-rollouts v1.6.2 h1:5Eur0FA9F9L0S+MkhxEtQlD9Hwb86U30QgTyKCUOor8=
-github.com/argoproj/argo-rollouts v1.6.2/go.mod h1:X2kTiBaYCSounmw1kmONdIZTwJNzNQYC0SrXUgSw9UI=
-github.com/argoproj/argo-rollouts v1.6.4 h1:mPa08VDNNk1/1Tq7I4QvWe5p+eDaBzVFVo1TmBpHk1I=
-github.com/argoproj/argo-rollouts v1.6.4/go.mod h1:X2kTiBaYCSounmw1kmONdIZTwJNzNQYC0SrXUgSw9UI=
-github.com/argoproj/argo-rollouts v1.6.5 h1:VDAp9PGboRbzd9tQJ/8IkaI+KrvWIRrpfSV5aeX0GUQ=
-github.com/argoproj/argo-rollouts v1.6.5/go.mod h1:X2kTiBaYCSounmw1kmONdIZTwJNzNQYC0SrXUgSw9UI=
 github.com/argoproj/argo-rollouts v1.6.6 h1:JCJ0cGAwWkh2xCAHZ1OQmrobysRjCatmG9IZaLJpS1g=
 github.com/argoproj/argo-rollouts v1.6.6/go.mod h1:X2kTiBaYCSounmw1kmONdIZTwJNzNQYC0SrXUgSw9UI=
+github.com/argoproj/argo-rollouts v1.7.0 h1:3Hv8MUwGIWuZe50+yyS/4X21t4jT4shdGvgDe0lG6aw=
+github.com/argoproj/argo-rollouts v1.7.0/go.mod h1:Te4HrUELxKiBpK8lgk77o4gTa3mv8pXCd8xdPprKrbs=
+github.com/argoproj/argo-rollouts v1.7.1 h1:KWStvHPRrNTbDTclogiYC/s4eKbdS45KkgXiorDzKG0=
+github.com/argoproj/argo-rollouts v1.7.1/go.mod h1:Te4HrUELxKiBpK8lgk77o4gTa3mv8pXCd8xdPprKrbs=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
 github.com/cespare/xxhash/v2 v2.2.0 h1:DC2CZ1Ep5Y4k3ZQ899DldepgrayRUGE6BBZ/cd9Cj44=
 github.com/cespare/xxhash/v2 v2.2.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cpuguy83/go-md2man/v2 v2.0.3/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
@@ -20,11 +19,15 @@ github.com/elazarl/goproxy v0.0.0-20221015165544-a0805db90819/go.mod h1:Ro8st/El
 github.com/elazarl/goproxy/ext v0.0.0-20190711103511-473e67f1d7d2/go.mod h1:gNh8nYJoAm43RfaxurUnxr+N1PwuFV3ZMl/efxlIlY8=
 github.com/emicklei/go-restful/v3 v3.10.1 h1:rc42Y5YTp7Am7CS630D7JmhRjq4UlEUuEKfrDac4bSQ=
 github.com/emicklei/go-restful/v3 v3.10.1/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
+github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g=
+github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc=
 github.com/evanphx/json-patch v5.6.0+incompatible h1:jBYDEEiFBPxA0v50tFdvOzQQTCvpL6mnFh5mB2/l16U=
 github.com/evanphx/json-patch v5.6.0+incompatible/go.mod h1:50XU6AFN0ol/bzJsmQLiYLvXMP4fmwYFNcr97nuDLSk=
 github.com/go-logr/logr v1.2.0/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
 github.com/go-logr/logr v1.2.4 h1:g01GSCwiDw2xSZfjJ2/T9M+S6pFdcNtFYsp+Y43HYDQ=
 github.com/go-logr/logr v1.2.4/go.mod h1:jdQByPbusPIv2/zmleS9BjJVeZ6kBagPoEUsqbVz/1A=
+github.com/go-logr/logr v1.3.0 h1:2y3SDp0ZXuc6/cjLSZ+Q3ir+QB9T/iG5yYRXqsagWSY=
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@@ -39,12 +42,14 @@ github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l
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@@ -55,6 +60,8 @@ github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1 h1:K6RDEckDVWvDI9JAJY
 github.com/google/pprof v0.0.0-20210720184732-4bb14d4b1be1/go.mod h1:kpwsk12EmLew5upagYY7GY0pfYCcupk39gWOCRROcvE=
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@@ -78,8 +85,6 @@ github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
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@@ -101,18 +106,14 @@ github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
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@@ -127,6 +128,8 @@ github.com/smartystreets/goconvey v1.7.2 h1:9RBaZCeXEQ3UselpuwUQHltGVXvdwm6cv1hg
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@@ -141,47 +144,53 @@ github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcU
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-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
-golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.3.8/go.mod h1:E6s5w1FMmriuDzIBO73fBruAKo1PCIq6d2Q6DHfQ8WQ=
+golang.org/x/text v0.15.0 h1:h1V/4gjBv8v9cjcR6+AR5+/cIYK5N/WAgiv4xlsEtAk=
+golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
 golang.org/x/time v0.3.0 h1:rg5rLMjNzMS1RkNLzCG38eapWhnYLFYXDXj2gOlr8j4=
 golang.org/x/time v0.3.0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
@@ -189,6 +198,7 @@ golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
 golang.org/x/tools v0.8.0 h1:vSDcovVPld282ceKgDimkRSC8kpaH1dgyc9UMzlt84Y=
 golang.org/x/tools v0.8.0/go.mod h1:JxBZ99ISMI5ViVkT1tr6tdNmXeTrcpVSD3vZ1RsRdN4=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -197,12 +207,12 @@ golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/appengine v1.6.7 h1:FZR1q0exgwxzPzp/aF+VccGrSfxfPpkBqjIIEq3ru6c=
 google.golang.org/appengine v1.6.7/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
+google.golang.org/appengine v1.6.8 h1:IhEN5q69dyKagZPYMSdIjS2HqprW324FRQZJcGqPAsM=
+google.golang.org/appengine v1.6.8/go.mod h1:1jJ3jBArFh5pcgW8gCtRJnepW8FzD1V44FJffLiz/Ds=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.31.0 h1:g0LDEJHgrBl9N9r17Ru3sqWhkIx2NB67okBHPwC7hs8=
-google.golang.org/protobuf v1.31.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
-google.golang.org/protobuf v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
-google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
 gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
@@ -217,23 +227,39 @@ gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 k8s.io/api v0.28.4 h1:8ZBrLjwosLl/NYgv1P7EQLqoO8MGQApnbgH8tu3BMzY=
 k8s.io/api v0.28.4/go.mod h1:axWTGrY88s/5YE+JSt4uUi6NMM+gur1en2REMR7IRj0=
+k8s.io/api v0.29.3 h1:2ORfZ7+bGC3YJqGpV0KSDDEVf8hdGQ6A03/50vj8pmw=
+k8s.io/api v0.29.3/go.mod h1:y2yg2NTyHUUkIoTC+phinTnEa3KFM6RZ3szxt014a80=
 k8s.io/apimachinery v0.28.4 h1:zOSJe1mc+GxuMnFzD4Z/U1wst50X28ZNsn5bhgIIao8=
 k8s.io/apimachinery v0.28.4/go.mod h1:wI37ncBvfAoswfq626yPTe6Bz1c22L7uaJ8dho83mgg=
+k8s.io/apimachinery v0.29.3 h1:2tbx+5L7RNvqJjn7RIuIKu9XTsIZ9Z5wX2G22XAa5EU=
+k8s.io/apimachinery v0.29.3/go.mod h1:hx/S4V2PNW4OMg3WizRrHutyB5la0iCUbZym+W0EQIU=
 k8s.io/client-go v0.28.4 h1:Np5ocjlZcTrkyRJ3+T3PkXDpe4UpatQxj85+xjaD2wY=
 k8s.io/client-go v0.28.4/go.mod h1:0VDZFpgoZfelyP5Wqu0/r/TRYcLYuJ2U1KEeoaPa1N4=
+k8s.io/client-go v0.29.3 h1:R/zaZbEAxqComZ9FHeQwOh3Y1ZUs7FaHKZdQtIc2WZg=
+k8s.io/client-go v0.29.3/go.mod h1:tkDisCvgPfiRpxGnOORfkljmS+UrW+WtXAy2fTvXJB0=
 k8s.io/klog/v2 v2.100.1 h1:7WCHKK6K8fNhTqfBhISHQ97KrnJNFZMcQvKp7gP/tmg=
 k8s.io/klog/v2 v2.100.1/go.mod h1:y1WjHnz7Dj687irZUWR/WLkLc5N1YHtjLdmgWjndZn0=
+k8s.io/klog/v2 v2.110.1 h1:U/Af64HJf7FcwMcXyKm2RPM22WZzyR7OSpYj5tg3cL0=
+k8s.io/klog/v2 v2.110.1/go.mod h1:YGtd1984u+GgbuZ7e08/yBuAfKLSO0+uR1Fhi6ExXjo=
 k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9 h1:LyMgNKD2P8Wn1iAwQU5OhxCKlKJy0sHc+PcDwFB24dQ=
 k8s.io/kube-openapi v0.0.0-20230717233707-2695361300d9/go.mod h1:wZK2AVp1uHCp4VamDVgBP2COHZjqD1T68Rf0CM3YjSM=
+k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00 h1:aVUu9fTY98ivBPKR9Y5w/AuzbMm96cd3YHRTU83I780=
+k8s.io/kube-openapi v0.0.0-20231010175941-2dd684a91f00/go.mod h1:AsvuZPBlUDVuCdzJ87iajxtXuR9oktsTctW/R9wwouA=
 k8s.io/kubectl v0.28.4 h1:gWpUXW/T7aFne+rchYeHkyB8eVDl5UZce8G4X//kjUQ=
 k8s.io/kubectl v0.28.4/go.mod h1:CKOccVx3l+3MmDbkXtIUtibq93nN2hkDR99XDCn7c/c=
-k8s.io/utils v0.0.0-20230726121419-3b25d923346b h1:sgn3ZU783SCgtaSJjpcVVlRqd6GSnlTLKgpAAttJvpI=
-k8s.io/utils v0.0.0-20230726121419-3b25d923346b/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
+k8s.io/kubectl v0.29.3 h1:RuwyyIU42MAISRIePaa8Q7A3U74Q9P4MoJbDFz9o3us=
+k8s.io/kubectl v0.29.3/go.mod h1:yCxfY1dbwgVdEt2zkJ6d5NNLOhhWgTyrqACIoFhpdd4=
+k8s.io/utils v0.0.0-20240423183400-0849a56e8f22 h1:ao5hUqGhsqdm+bYbjH/pRkCs0unBGe9UyDahzs9zQzQ=
+k8s.io/utils v0.0.0-20240423183400-0849a56e8f22/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
 moul.io/http2curl v1.0.0 h1:6XwpyZOYsgZJrU8exnG87ncVkU1FVCcTRpwzOkTDUi8=
 moul.io/http2curl v1.0.0/go.mod h1:f6cULg+e4Md/oW1cYmwW4IWQOVl2lGbmCNGOHvzX2kE=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd h1:EDPBXCAspyGV4jQlpZSudPeMmr1bNJefnuqLsRAsHZo=
 sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd/go.mod h1:B8JuhiUyNFVKdsE8h686QcCxMaH6HrOAZj4vswFpcB0=
 sigs.k8s.io/structured-merge-diff/v4 v4.2.3 h1:PRbqxJClWWYMNV1dhaG4NsibJbArud9kFxnAMREiWFE=
 sigs.k8s.io/structured-merge-diff/v4 v4.2.3/go.mod h1:qjx8mGObPmV2aSZepjQjbmb2ihdVs8cGKBraizNC69E=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1 h1:150L+0vs/8DA78h1u02ooW1/fFq/Lwr+sGiqlzvrtq4=
+sigs.k8s.io/structured-merge-diff/v4 v4.4.1/go.mod h1:N8hJocpFajUSSeSJ9bOZ77VzejKZaXsTtZo4/u7Io08=
 sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
 sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=
+sigs.k8s.io/yaml v1.4.0 h1:Mk1wCc2gy/F0THH0TAp1QYyJNzRm2KCLy3o5ASXVI5E=
+sigs.k8s.io/yaml v1.4.0/go.mod h1:Ejl7/uTz7PSA4eKMyQCUTnhZYNmLIl+5c2lQPGR2BPY=

internal/pkg/cmd/reloader.go

@@ -51,6 +51,7 @@ func NewReloaderCommand() *cobra.Command {
 	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().StringVar(&options.ReloadOnDelete, "reload-on-delete", "false", "Add support to watch delete events")
 	cmd.PersistentFlags().BoolVar(&options.EnableHA, "enable-ha", false, "Adds support for running multiple replicas via leadership election")
 	cmd.PersistentFlags().BoolVar(&options.SyncAfterRestart, "sync-after-restart", false, "Sync add events after reloader restarts")
 

internal/pkg/controller/controller.go

@@ -178,13 +178,22 @@ func (c *Controller) Update(old interface{}, new interface{}) {
 
 // Delete function to add an object to the queue in case of deleting a resource
 func (c *Controller) Delete(old interface{}) {
+
+	if options.ReloadOnDelete == "true" {
+		if !c.resourceInIgnoredNamespace(old) && c.resourceInSelectedNamespaces(old) && secretControllerInitialized && configmapControllerInitialized {
+			c.queue.Add(handler.ResourceDeleteHandler{
+				Resource:   old,
+				Collectors: c.collectors,
+				Recorder:   c.recorder,
+			})
+		}
+	}
+
 	switch object := old.(type) {
 	case *v1.Namespace:
 		c.removeSelectedNamespaceFromCache(*object)
 		return
 	}
-
-	// Todo: Any future delete event can be handled here
 }
 
 // Run function for controller which handles the queue

internal/pkg/handler/create.go

@@ -27,7 +27,7 @@ func (r ResourceCreatedHandler) Handle() error {
 			return sendUpgradeWebhook(config, options.WebhookUrl)
 		}
 		// process resource based on its type
-		return doRollingUpgrade(config, r.Collectors, r.Recorder)
+		return doRollingUpgrade(config, r.Collectors, r.Recorder, invokeReloadStrategy)
 	}
 	return nil
 }

internal/pkg/handler/delete.go

@@ -0,0 +1,92 @@
+package handler
+
+import (
+	"github.com/sirupsen/logrus"
+	"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/testutil"
+	"github.com/stakater/Reloader/internal/pkg/util"
+	v1 "k8s.io/api/core/v1"
+	"k8s.io/apimachinery/pkg/runtime"
+	"k8s.io/client-go/tools/record"
+)
+
+// ResourceDeleteHandler contains new objects
+type ResourceDeleteHandler struct {
+	Resource   interface{}
+	Collectors metrics.Collectors
+	Recorder   record.EventRecorder
+}
+
+// Handle processes resources being deleted
+func (r ResourceDeleteHandler) Handle() error {
+	if r.Resource == nil {
+		logrus.Errorf("Resource delete handler received nil resource")
+	} else {
+		config, _ := r.GetConfig()
+		// Send webhook
+		if options.WebhookUrl != "" {
+			return sendUpgradeWebhook(config, options.WebhookUrl)
+		}
+		// process resource based on its type
+		return doRollingUpgrade(config, r.Collectors, r.Recorder, invokeDeleteStrategy)
+	}
+	return nil
+}
+
+// GetConfig gets configurations containing SHA, annotations, namespace and resource name
+func (r ResourceDeleteHandler) GetConfig() (util.Config, string) {
+	var oldSHAData string
+	var config util.Config
+	if _, ok := r.Resource.(*v1.ConfigMap); ok {
+		config = util.GetConfigmapConfig(r.Resource.(*v1.ConfigMap))
+	} else if _, ok := r.Resource.(*v1.Secret); ok {
+		config = util.GetSecretConfig(r.Resource.(*v1.Secret))
+	} else {
+		logrus.Warnf("Invalid resource: Resource should be 'Secret' or 'Configmap' but found, %v", r.Resource)
+	}
+	return config, oldSHAData
+}
+
+func invokeDeleteStrategy(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
+	if options.ReloadStrategy == constants.AnnotationsReloadStrategy {
+		return removePodAnnotations(upgradeFuncs, item, config, autoReload)
+	}
+
+	return removeContainerEnvVars(upgradeFuncs, item, config, autoReload)
+}
+
+func removePodAnnotations(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
+	config.SHAValue = testutil.GetSHAfromEmptyData()
+	return updatePodAnnotations(upgradeFuncs, item, config, autoReload)
+}
+
+func removeContainerEnvVars(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
+	envVar := getEnvVarName(config.ResourceName, config.Type)
+	container := getContainerUsingResource(upgradeFuncs, item, config, autoReload)
+
+	if container == nil {
+		return constants.NoContainerFound
+	}
+
+	//remove if env var exists
+	containers := upgradeFuncs.ContainersFunc(item)
+	for i := range containers {
+		envs := containers[i].Env
+		index := -1
+		for j := range envs {
+			if envs[j].Name == envVar {
+				index = j
+				break
+			}
+		}
+		if index != -1 {
+			containers[i].Env = append(containers[i].Env[:index], containers[i].Env[index+1:]...)
+			return constants.Updated
+		}
+	}
+
+	return constants.NotUpdated
+}

internal/pkg/handler/update.go

@@ -29,7 +29,7 @@ func (r ResourceUpdatedHandler) Handle() error {
 				return sendUpgradeWebhook(config, options.WebhookUrl)
 			}
 			// process resource based on its type
-			return doRollingUpgrade(config, r.Collectors, r.Recorder)
+			return doRollingUpgrade(config, r.Collectors, r.Recorder, invokeReloadStrategy)
 		}
 	}
 	return nil

internal/pkg/handler/upgrade.go

@@ -142,35 +142,35 @@ func sendWebhook(url string) (string, []error) {
 	return buffer.String(), nil
 }
 
-func doRollingUpgrade(config util.Config, collectors metrics.Collectors, recorder record.EventRecorder) error {
+func doRollingUpgrade(config util.Config, collectors metrics.Collectors, recorder record.EventRecorder, invoke invokeStrategy) error {
 	clients := kube.GetClients()
 
-	err := rollingUpgrade(clients, config, GetDeploymentRollingUpgradeFuncs(), collectors, recorder)
+	err := rollingUpgrade(clients, config, GetDeploymentRollingUpgradeFuncs(), collectors, recorder, invoke)
 	if err != nil {
 		return err
 	}
-	err = rollingUpgrade(clients, config, GetCronJobCreateJobFuncs(), collectors, recorder)
+	err = rollingUpgrade(clients, config, GetCronJobCreateJobFuncs(), collectors, recorder, invoke)
 	if err != nil {
 		return err
 	}
-	err = rollingUpgrade(clients, config, GetDaemonSetRollingUpgradeFuncs(), collectors, recorder)
+	err = rollingUpgrade(clients, config, GetDaemonSetRollingUpgradeFuncs(), collectors, recorder, invoke)
 	if err != nil {
 		return err
 	}
-	err = rollingUpgrade(clients, config, GetStatefulSetRollingUpgradeFuncs(), collectors, recorder)
+	err = rollingUpgrade(clients, config, GetStatefulSetRollingUpgradeFuncs(), collectors, recorder, invoke)
 	if err != nil {
 		return err
 	}
 
 	if kube.IsOpenshift {
-		err = rollingUpgrade(clients, config, GetDeploymentConfigRollingUpgradeFuncs(), collectors, recorder)
+		err = rollingUpgrade(clients, config, GetDeploymentConfigRollingUpgradeFuncs(), collectors, recorder, invoke)
 		if err != nil {
 			return err
 		}
 	}
 
 	if options.IsArgoRollouts == "true" {
-		err = rollingUpgrade(clients, config, GetArgoRolloutRollingUpgradeFuncs(), collectors, recorder)
+		err = rollingUpgrade(clients, config, GetArgoRolloutRollingUpgradeFuncs(), collectors, recorder, invoke)
 		if err != nil {
 			return err
 		}
@@ -179,17 +179,17 @@ func doRollingUpgrade(config util.Config, collectors metrics.Collectors, recorde
 	return nil
 }
 
-func rollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs, collectors metrics.Collectors, recorder record.EventRecorder) error {
+func rollingUpgrade(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs, collectors metrics.Collectors, recorder record.EventRecorder, strategy invokeStrategy) error {
 
-	err := PerformRollingUpgrade(clients, config, upgradeFuncs, collectors, recorder)
+	err := PerformAction(clients, config, upgradeFuncs, collectors, recorder, strategy)
 	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, collectors metrics.Collectors, recorder record.EventRecorder) error {
+// PerformAction invokes the deployment if there is any change in configmap or secret data
+func PerformAction(clients kube.Clients, config util.Config, upgradeFuncs callbacks.RollingUpgradeFuncs, collectors metrics.Collectors, recorder record.EventRecorder, strategy invokeStrategy) error {
 	items := upgradeFuncs.ItemsFunc(clients, config.Namespace)
 
 	for _, i := range items {
@@ -210,7 +210,7 @@ func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFunc
 		reloaderEnabled, _ := strconv.ParseBool(reloaderEnabledValue)
 		typedAutoAnnotationEnabled, _ := strconv.ParseBool(typedAutoAnnotationEnabledValue)
 		if reloaderEnabled || typedAutoAnnotationEnabled || reloaderEnabledValue == "" && typedAutoAnnotationEnabledValue == "" && options.AutoReloadAll {
-			result = invokeReloadStrategy(upgradeFuncs, i, config, true)
+			result = strategy(upgradeFuncs, i, config, true)
 		}
 
 		if result != constants.Updated && annotationValue != "" {
@@ -219,7 +219,7 @@ func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFunc
 				value = strings.TrimSpace(value)
 				re := regexp.MustCompile("^" + value + "$")
 				if re.Match([]byte(config.ResourceName)) {
-					result = invokeReloadStrategy(upgradeFuncs, i, config, false)
+					result = strategy(upgradeFuncs, i, config, false)
 					if result == constants.Updated {
 						break
 					}
@@ -230,7 +230,7 @@ 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)
+				result = strategy(upgradeFuncs, i, config, true)
 			}
 		}
 
@@ -245,6 +245,7 @@ func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFunc
 				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()
+				collectors.ReloadedByNamespace.With(prometheus.Labels{"success": "false", "namespace": config.Namespace}).Inc()
 				if recorder != nil {
 					recorder.Event(i, v1.EventTypeWarning, "ReloadFail", message)
 				}
@@ -254,6 +255,7 @@ func PerformRollingUpgrade(clients kube.Clients, config util.Config, upgradeFunc
 				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()
+				collectors.ReloadedByNamespace.With(prometheus.Labels{"success": "true", "namespace": config.Namespace}).Inc()
 				alert_on_reload, ok := os.LookupEnv("ALERT_ON_RELOAD")
 				if recorder != nil {
 					recorder.Event(i, v1.EventTypeNormal, "Reloaded", message)
@@ -380,6 +382,8 @@ func getContainerUsingResource(upgradeFuncs callbacks.RollingUpgradeFuncs, item
 	return container
 }
 
+type invokeStrategy func(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, 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)
@@ -416,6 +420,13 @@ func updatePodAnnotations(upgradeFuncs callbacks.RollingUpgradeFuncs, item runti
 	return constants.Updated
 }
 
+func getReloaderAnnotationKey() string {
+	return fmt.Sprintf("%s/%s",
+		constants.ReloaderAnnotationPrefix,
+		constants.LastReloadedFromAnnotation,
+	)
+}
+
 func createReloadedAnnotations(target *util.ReloadSource) (map[string]string, error) {
 	if target == nil {
 		return nil, errors.New("target is required")
@@ -426,10 +437,7 @@ func createReloadedAnnotations(target *util.ReloadSource) (map[string]string, er
 	// 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,
-	)
+	lastReloadedResourceName := getReloaderAnnotationKey()
 
 	lastReloadedResource, err := json.Marshal(target)
 	if err != nil {
@@ -440,9 +448,13 @@ func createReloadedAnnotations(target *util.ReloadSource) (map[string]string, er
 	return annotations, nil
 }
 
+func getEnvVarName(resourceName string, typeName string) string {
+	return constants.EnvVarPrefix + util.ConvertToEnvVarName(resourceName) + "_" + typeName
+}
+
 func updateContainerEnvVars(upgradeFuncs callbacks.RollingUpgradeFuncs, item runtime.Object, config util.Config, autoReload bool) constants.Result {
 	var result constants.Result
-	envVar := constants.EnvVarPrefix + util.ConvertToEnvVarName(config.ResourceName) + "_" + config.Type
+	envVar := getEnvVarName(config.ResourceName, config.Type)
 	container := getContainerUsingResource(upgradeFuncs, item, config, autoReload)
 
 	if container == nil {

internal/pkg/metrics/prometheus.go

@@ -1,13 +1,16 @@
 package metrics
 
 import (
+	"net/http"
+	"os"
+
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
-	"net/http"
 )
 
 type Collectors struct {
-	Reloaded *prometheus.CounterVec
+	Reloaded            *prometheus.CounterVec
+	ReloadedByNamespace *prometheus.CounterVec
 }
 
 func NewCollectors() Collectors {
@@ -17,21 +20,40 @@ func NewCollectors() Collectors {
 			Name:      "reload_executed_total",
 			Help:      "Counter of reloads executed by Reloader.",
 		},
-		[]string{"success"},
+		[]string{
+			"success",
+		},
 	)
 
 	//set 0 as default value
 	reloaded.With(prometheus.Labels{"success": "true"}).Add(0)
 	reloaded.With(prometheus.Labels{"success": "false"}).Add(0)
 
+	reloaded_by_namespace := prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: "reloader",
+			Name:      "reload_executed_total_by_namespace",
+			Help:      "Counter of reloads executed by Reloader by namespace.",
+		},
+		[]string{
+			"success",
+			"namespace",
+		},
+	)
 	return Collectors{
-		Reloaded: reloaded,
+		Reloaded:            reloaded,
+		ReloadedByNamespace: reloaded_by_namespace,
 	}
 }
 
 func SetupPrometheusEndpoint() Collectors {
 	collectors := NewCollectors()
 	prometheus.MustRegister(collectors.Reloaded)
+
+	if os.Getenv("METRICS_COUNT_BY_NAMESPACE") == "enabled" {
+		prometheus.MustRegister(collectors.ReloadedByNamespace)
+	}
+
 	http.Handle("/metrics", promhttp.Handler())
 
 	return collectors

internal/pkg/options/flags.go

@@ -32,7 +32,9 @@ var (
 	// ReloadStrategy Specify the update strategy
 	ReloadStrategy = constants.EnvVarsReloadStrategy
 	// ReloadOnCreate Adds support to watch create events
-	ReloadOnCreate   = "false"
+	ReloadOnCreate = "false"
+	// ReloadOnDelete Adds support to watch delete events
+	ReloadOnDelete   = "false"
 	SyncAfterRestart = false
 	// EnableHA adds support for running multiple replicas via leadership election
 	EnableHA = false

internal/pkg/testutil/kube.go

@@ -934,6 +934,55 @@ func VerifyResourceEnvVarUpdate(clients kube.Clients, config util.Config, envVar
 	return false
 }
 
+// VerifyResourceEnvVarRemoved verifies whether the rolling upgrade happened or not and all Envvars SKAKATER_name_CONFIGMAP/SECRET are removed
+func VerifyResourceEnvVarRemoved(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 := annotations[config.Annotation]
+		searchAnnotationValue := annotations[options.AutoSearchAnnotation]
+		reloaderEnabledValue := annotations[options.ReloaderAutoAnnotation]
+		typedAutoAnnotationEnabledValue := annotations[config.TypedAutoAnnotation]
+		reloaderEnabled, err := strconv.ParseBool(reloaderEnabledValue)
+		typedAutoAnnotationEnabled, errTyped := strconv.ParseBool(typedAutoAnnotationEnabledValue)
+
+		matches := false
+		if err == nil && reloaderEnabled || errTyped == nil && typedAutoAnnotationEnabled {
+			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 {
+			envName := constants.EnvVarPrefix + util.ConvertToEnvVarName(config.ResourceName) + "_" + envVarPostfix
+			value := GetResourceSHAFromEnvVar(containers, envName)
+			if value == "" {
+				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)
@@ -978,3 +1027,7 @@ func VerifyResourceAnnotationUpdate(clients kube.Clients, config util.Config, up
 	}
 	return false
 }
+
+func GetSHAfromEmptyData() string {
+	return crypto.GenerateSHA("")
+}

sonar-project.properties

@@ -0,0 +1,8 @@
+sonar.projectKey=Reloader
+sonar.sources=.
+sonar.exclusions=**/*_test.go
+sonar.language=go
+
+sonar.tests=.
+sonar.test.inclusions=**/*_test.go
+sonar.analysisCache.enabled=false