Merge pull request #78 from skamboj/migrate-to-go-modules

Migrate to go modules
Merge branch 'master' into migrate-to-go-modules
2026-02-19 20:39:53 +00:00 · 2020-04-02 20:40:46 +01:00 · 2020-04-02 17:56:00 +01:00 · 2020-04-02 17:55:47 +01:00 · 2020-04-02 17:36:43 +01:00 · 2020-04-01 21:06:01 -04:00
37 changed files with 1243 additions and 900 deletions
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,2 +1 @@
 .git/
-/vendor/
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,23 +4,35 @@ services:
  - docker

 go:
-  - "1.10.x"
+  - "1.14.x"
  - master

 script:
  - docker --version
-  # dep
-  - go get -u github.com/golang/dep/cmd/dep
-  
+
  # build locally and run locally
  - make clean && make vendor && make && ./bin/goldpinger --help
-  
+
  # build an image and run the image
  - make clean && make vendor && make build
  - docker images
  - docker run `make version` --help
-  
+
  # build an image using the multistage builder
  - make clean && make build-multistage
  - docker images
  - docker run `make version` --help
+
+  # build an image with the vendor folder
+  - make clean && make vendor && make vendor-build
+  - docker images
+  - docker run `make version`-vendor --help
+
+deploy:
+  provider: script
+  script: bash docker_deploy.sh
+  skip_cleanup: true
+  on:
+    tags: true
+    go: "1.14.x"
+    condition: -n "$DOCKER_PASSWORD"
--- a/12
+++ b/12
@@ -1,15 +1,14 @@
-FROM golang:1.11-alpine as builder
+FROM golang:1.14-alpine as builder

 # Install our build tools

 RUN apk add --update git make bash
-RUN go get -u github.com/golang/dep/cmd/dep

 # Get dependencies

-WORKDIR /go/src/github.com/bloomberg/goldpinger
-COPY Gopkg.toml Gopkg.lock Makefile ./
-RUN make vendor
+WORKDIR /w
+COPY go.mod go.sum /w/
+RUN go mod download

 # Build goldpinger

@@ -19,7 +18,6 @@ RUN make bin/goldpinger
 # Build the asset container, copy over goldpinger

 FROM scratch
-COPY --from=builder /go/src/github.com/bloomberg/goldpinger/bin/goldpinger /goldpinger
+COPY --from=builder /w/bin/goldpinger /goldpinger
 COPY ./static /static
 ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]
-
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -1,637 +0,0 @@
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-
-[[projects]]
-  digest = "1:910ec974550174f4ca48b9f4a3caec16b693e584c3762dc726dc0dcf28f8e318"
-  name = "k8s.io/api"
-  packages = [
-    "admissionregistration/v1alpha1",
-    "admissionregistration/v1beta1",
-    "apps/v1",
-    "apps/v1beta1",
-    "apps/v1beta2",
-    "authentication/v1",
-    "authentication/v1beta1",
-    "authorization/v1",
-    "authorization/v1beta1",
-    "autoscaling/v1",
-    "autoscaling/v2beta1",
-    "autoscaling/v2beta2",
-    "batch/v1",
-    "batch/v1beta1",
-    "batch/v2alpha1",
-    "certificates/v1beta1",
-    "coordination/v1beta1",
-    "core/v1",
-    "events/v1beta1",
-    "extensions/v1beta1",
-    "networking/v1",
-    "policy/v1beta1",
-    "rbac/v1",
-    "rbac/v1alpha1",
-    "rbac/v1beta1",
-    "scheduling/v1alpha1",
-    "scheduling/v1beta1",
-    "settings/v1alpha1",
-    "storage/v1",
-    "storage/v1alpha1",
-    "storage/v1beta1",
-  ]
-  pruneopts = "UT"
-  revision = "fd83cbc87e7632ccd8bbab63d2b673d4e0c631cc"
-  version = "kubernetes-1.12.0"
-
-[[projects]]
-  digest = "1:18f352651d6e8578fdbaf29c68334b042439b288b8ae4112c2b2ba9a6e35ced0"
-  name = "k8s.io/apimachinery"
-  packages = [
-    "pkg/api/errors",
-    "pkg/api/meta",
-    "pkg/api/resource",
-    "pkg/apis/meta/v1",
-    "pkg/apis/meta/v1/unstructured",
-    "pkg/apis/meta/v1beta1",
-    "pkg/conversion",
-    "pkg/conversion/queryparams",
-    "pkg/fields",
-    "pkg/labels",
-    "pkg/runtime",
-    "pkg/runtime/schema",
-    "pkg/runtime/serializer",
-    "pkg/runtime/serializer/json",
-    "pkg/runtime/serializer/protobuf",
-    "pkg/runtime/serializer/recognizer",
-    "pkg/runtime/serializer/streaming",
-    "pkg/runtime/serializer/versioning",
-    "pkg/selection",
-    "pkg/types",
-    "pkg/util/clock",
-    "pkg/util/errors",
-    "pkg/util/framer",
-    "pkg/util/intstr",
-    "pkg/util/json",
-    "pkg/util/naming",
-    "pkg/util/net",
-    "pkg/util/runtime",
-    "pkg/util/sets",
-    "pkg/util/validation",
-    "pkg/util/validation/field",
-    "pkg/util/yaml",
-    "pkg/version",
-    "pkg/watch",
-    "third_party/forked/golang/reflect",
-  ]
-  pruneopts = "UT"
-  revision = "6dd46049f39503a1fc8d65de4bd566829e95faff"
-  version = "kubernetes-1.12.0"
-
-[[projects]]
-  digest = "1:51fd9ac9f2be10d79f5af101a7a1d758ef283fdb028a0d11198754bd3d4a6020"
-  name = "k8s.io/client-go"
-  packages = [
-    "discovery",
-    "kubernetes",
-    "kubernetes/scheme",
-    "kubernetes/typed/admissionregistration/v1alpha1",
-    "kubernetes/typed/admissionregistration/v1beta1",
-    "kubernetes/typed/apps/v1",
-    "kubernetes/typed/apps/v1beta1",
-    "kubernetes/typed/apps/v1beta2",
-    "kubernetes/typed/authentication/v1",
-    "kubernetes/typed/authentication/v1beta1",
-    "kubernetes/typed/authorization/v1",
-    "kubernetes/typed/authorization/v1beta1",
-    "kubernetes/typed/autoscaling/v1",
-    "kubernetes/typed/autoscaling/v2beta1",
-    "kubernetes/typed/autoscaling/v2beta2",
-    "kubernetes/typed/batch/v1",
-    "kubernetes/typed/batch/v1beta1",
-    "kubernetes/typed/batch/v2alpha1",
-    "kubernetes/typed/certificates/v1beta1",
-    "kubernetes/typed/coordination/v1beta1",
-    "kubernetes/typed/core/v1",
-    "kubernetes/typed/events/v1beta1",
-    "kubernetes/typed/extensions/v1beta1",
-    "kubernetes/typed/networking/v1",
-    "kubernetes/typed/policy/v1beta1",
-    "kubernetes/typed/rbac/v1",
-    "kubernetes/typed/rbac/v1alpha1",
-    "kubernetes/typed/rbac/v1beta1",
-    "kubernetes/typed/scheduling/v1alpha1",
-    "kubernetes/typed/scheduling/v1beta1",
-    "kubernetes/typed/settings/v1alpha1",
-    "kubernetes/typed/storage/v1",
-    "kubernetes/typed/storage/v1alpha1",
-    "kubernetes/typed/storage/v1beta1",
-    "pkg/apis/clientauthentication",
-    "pkg/apis/clientauthentication/v1alpha1",
-    "pkg/apis/clientauthentication/v1beta1",
-    "pkg/version",
-    "plugin/pkg/client/auth/exec",
-    "rest",
-    "rest/watch",
-    "tools/auth",
-    "tools/clientcmd",
-    "tools/clientcmd/api",
-    "tools/clientcmd/api/latest",
-    "tools/clientcmd/api/v1",
-    "tools/metrics",
-    "tools/reference",
-    "transport",
-    "util/cert",
-    "util/connrotation",
-    "util/flowcontrol",
-    "util/homedir",
-    "util/integer",
-  ]
-  pruneopts = "UT"
-  revision = "1638f8970cefaa404ff3a62950f88b08292b2696"
-  version = "v9.0.0"
-
-[solve-meta]
-  analyzer-name = "dep"
-  analyzer-version = 1
-  input-imports = [
-    "github.com/go-openapi/errors",
-    "github.com/go-openapi/loads",
-    "github.com/go-openapi/runtime",
-    "github.com/go-openapi/runtime/client",
-    "github.com/go-openapi/runtime/flagext",
-    "github.com/go-openapi/runtime/middleware",
-    "github.com/go-openapi/runtime/security",
-    "github.com/go-openapi/spec",
-    "github.com/go-openapi/strfmt",
-    "github.com/go-openapi/swag",
-    "github.com/go-openapi/validate",
-    "github.com/jessevdk/go-flags",
-    "github.com/prometheus/client_golang/prometheus",
-    "github.com/prometheus/client_golang/prometheus/promhttp",
-    "golang.org/x/net/context",
-    "golang.org/x/net/netutil",
-    "k8s.io/apimachinery/pkg/apis/meta/v1",
-    "k8s.io/client-go/kubernetes",
-    "k8s.io/client-go/rest",
-    "k8s.io/client-go/tools/clientcmd",
-  ]
-  solver-name = "gps-cdcl"
-  solver-version = 1
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -1,78 +0,0 @@
-# Gopkg.toml example
-#
-# Refer to https://golang.github.io/dep/docs/Gopkg.toml.html
-# for detailed Gopkg.toml documentation.
-#
-# required = ["github.com/user/thing/cmd/thing"]
-# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
-#
-# [[constraint]]
-#   name = "github.com/user/project"
-#   version = "1.0.0"
-#
-# [[constraint]]
-#   name = "github.com/user/project2"
-#   branch = "dev"
-#   source = "github.com/myfork/project2"
-#
-# [[override]]
-#   name = "github.com/x/y"
-#   version = "2.4.0"
-#
-# [prune]
-#   non-go = false
-#   go-tests = true
-#   unused-packages = true
-
-
-[[constraint]]
-  name = "github.com/go-openapi/errors"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/loads"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/runtime"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/spec"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/strfmt"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/swag"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/go-openapi/validate"
-  version = "0.17.2"
-
-[[constraint]]
-  name = "github.com/jessevdk/go-flags"
-  version = "1.4.0"
-
-[[constraint]]
-  name = "github.com/prometheus/client_golang"
-  version = "0.9.1"
-
-[[constraint]]
-  branch = "master"
-  name = "golang.org/x/net"
-
-[[constraint]]
-  name = "k8s.io/apimachinery"
-  version = "kubernetes-1.12.0"
-
-[[constraint]]
-  name = "k8s.io/client-go"
-  version = "9.0.0"
-
-[prune]
-  go-tests = true
-  unused-packages = true
--- a/21
+++ b/21
@@ -1,10 +1,10 @@
 name ?= goldpinger
-version ?= 1.3.0
+version ?= v2.1.0
 bin ?= goldpinger
 pkg ?= "github.com/bloomberg/goldpinger"
 tag = $(name):$(version)
 goos ?= ${GOOS}
-namespace ?= ""
+namespace ?= "bloomberg/"
 files = $(shell find . -iname "*.go")


@@ -17,7 +17,7 @@ clean:

 vendor:
 	rm -rf ./vendor
-	dep ensure -v -vendor-only
+	go mod vendor

 swagger:
 	swagger generate server -t pkg -f ./swagger.yml --exclude-main -A goldpinger && \
@@ -38,8 +38,19 @@ push:

 run:
 	go run ./cmd/goldpinger/main.go
-	
+
 version:
 	@echo $(tag)

-.PHONY: clean vendor swagger build build-multistage tag push run version
+
+vendor-build:
+	docker build -t $(tag)-vendor --build-arg TAG=$(tag) -f ./build/Dockerfile-vendor .
+
+vendor-tag:
+	docker tag $(tag)-vendor $(namespace)$(tag)-vendor
+
+vendor-push:
+	docker push $(namespace)$(tag)-vendor
+
+
+.PHONY: clean vendor swagger build build-multistage vendor-build vendor-tag vendor-push tag push run version
--- a/README.md
+++ b/README.md
@@ -10,22 +10,25 @@ Oh, and it gives you the graph below for your cluster. Check out the [video expl

 ## On the menu

- [Rationale](#rationale)
- [Quick start](#quick-start)
- [Building](#building)
-  - [Compiling using a multi-stage Dockerfile](#compiling-using-a-multi-stage-dockerfile)
-  - [Compiling locally](#compiling-locally)
- [Installation](#installation)
-  - [Authentication with Kubernetes API](#authentication-with-kubernetes-api)
-  - [Example YAML](#example-yaml)
- [Usage](#usage)
-  - [UI](#ui)
-  - [API](#api)
-  - [Prometheus](#prometheus)
-  - [Grafana](#grafana)
-  - [Alert Manager](#alert-manager)
- [Contributions](#contributions)
- [License](#license)
+- [Goldpinger ![Build Status](https://travis-ci.com/bloomberg/goldpinger)](#goldpinger-build-statushttpstravis-cicombloomberggoldpinger)
+  - [On the menu](#on-the-menu)
+  - [Rationale](#rationale)
+  - [Quick start](#quick-start)
+  - [Building](#building)
+    - [Compiling using a multi-stage Dockerfile](#compiling-using-a-multi-stage-dockerfile)
+    - [Compiling locally](#compiling-locally)
+  - [Installation](#installation)
+    - [Authentication with Kubernetes API](#authentication-with-kubernetes-api)
+    - [Example YAML](#example-yaml)
+    - [Note on DNS](#note-on-dns)
+  - [Usage](#usage)
+    - [UI](#ui)
+    - [API](#api)
+    - [Prometheus](#prometheus)
+    - [Grafana](#grafana)
+    - [Alert Manager](#alert-manager)
+  - [Contributions](#contributions)
+  - [License](#license)

 ## Rationale

@@ -38,13 +41,19 @@ If you'd like to know more, you can watch [our presentation at Kubecon 2018 Seat

 ## Quick start

+Getting from sources:
+
 ```sh
 go get github.com/bloomberg/goldpinger/cmd/goldpinger
 goldpinger --help
 ```

-Note, that in order to guarantee correct versions of dependencies, the project [uses `dep`](./Makefile).
+Getting from [docker hub](https://hub.docker.com/r/bloomberg/goldpinger):

+```sh
+# get from docker hub
+docker pull bloomberg/goldpinger
+```

 ## Building

@@ -67,27 +76,24 @@ This was contributed via [@michiel](https://github.com/michiel) - kudos !

 ### Compiling locally

-In order to build `Goldpinger`, you are going to need `go` version 1.10+, `dep`, and `docker`.
+In order to build `Goldpinger`, you are going to need `go` version 1.13+ and `docker`.

 Building from source code consists of compiling the binary and building a [Docker image](./build/Dockerfile-simple):

 ```sh
-# step 0: check out the code into your $GOPATH
-go get github.com/bloomberg/goldpinger/cmd/goldpinger 
-cd $GOPATH/src/github.com/bloomberg/goldpinger
+# step 0: check out the code
+git clone https://github.com/bloomberg/goldpinger.git
+cd goldpinger

-# step 1: download the dependencies via dep ensure
-make vendor
-
-# step 2: compile the binary for the desired architecture
+# step 1: compile the binary for the desired architecture
 make bin/goldpinger
 # at this stage you should be able to run the binary
 ./bin/goldpinger --help

-# step 3: build the docker image containing the binary
+# step 2: build the docker image containing the binary
 make build

-# step 4: push the image somewhere
+# step 3: push the image somewhere
 namespace="docker.io/myhandle/" make tag
 namespace="docker.io/myhandle/" make push
 ```
@@ -103,9 +109,7 @@ namespace="docker.io/myhandle/" make push
 ### Example YAML


-Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver). 
-
-:warning: Replace `docker.io/mynamespace-replaceme/goldpinger:1.0.0` with the actual tag you built.
+Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver).

 ```yaml
 ---
@@ -113,46 +117,86 @@ apiVersion: apps/v1
 kind: DaemonSet
 metadata:
  name: goldpinger
+  namespace: default
+  labels:
+    app: goldpinger
 spec:
  updateStrategy:
    type: RollingUpdate
  selector:
    matchLabels:
      app: goldpinger
-      version: "1.0.0"
  template:
    metadata:
+      annotations:
+        prometheus.io/scrape: 'true'
+        prometheus.io/port: '8080'
      labels:
        app: goldpinger
-        version: "1.0.0"
    spec:
+      serviceAccount: "goldpinger-serviceaccount"
+      tolerations:
+        - key: node-role.kubernetes.io/master
+          effect: NoSchedule
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
      containers:
        - name: goldpinger
          env:
            - name: HOST
              value: "0.0.0.0"
            - name: PORT
-              value: "80"
+              value: "8080"
            # injecting real hostname will make for easier to understand graphs/metrics
            - name: HOSTNAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
-          image: "docker.io/mynamespace-replaceme/goldpinger:1.0.0"
+            # podIP is used to select a randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.2"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
          ports:
-            - containerPort: 80
+            - containerPort: 8080
              name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
 ---
 apiVersion: v1
 kind: Service
 metadata:
  name: goldpinger
+  namespace: default
  labels:
    app: goldpinger
 spec:
  type: NodePort
  ports:
-    - port: 80
+    - port: 8080
      nodePort: 30080
      name: http
  selector:
@@ -179,6 +223,28 @@ subjects:

 You can also see [an example of using `kubeconfig` in the `./extras`](./extras/example-with-kubeconfig.yaml).

+### Note on DNS
+
+Note, that on top of resolving the other pods, all instances can also try to resolve arbitrary DNS. This allows you to test your DNS setup.
+
+From `--help`:
+
+```sh
+--host-to-resolve=      A host to attempt dns resolve on (space delimited) [$HOSTS_TO_RESOLVE]
+```
+
+So in order to test two domains, we could add an extra env var to the example above:
+
+```yaml
+            - name: HOSTS_TO_RESOLVE
+              value: "www.bloomberg.com one.two.three"
+```
+
+and `goldpinger` should show something like this:
+
+![screenshot-DNS-resolution](./extras/dns-screenshot.png)
+
+
 ## Usage

 ### UI
@@ -191,7 +257,7 @@ You can click on various nodes to gray out the clutter and see more information.

 ### API

-The API exposed is via a well-defined [`Swagger` spec](./swagger.yml). 
+The API exposed is via a well-defined [`Swagger` spec](./swagger.yml).

 The spec is used to generate both the server and the client of `Goldpinger`. If you make changes, you can re-generate them using [go-swagger](https://github.com/go-swagger/go-swagger) via [`make swagger`](./Makefile)

@@ -224,7 +290,7 @@ To get you started, here's a rule that will trigger an alert if there are any no
 ```yaml
 alert: goldpinger_nodes_unhealthy
 expr: sum(goldpinger_nodes_health_total{status="unhealthy"})
-  BY (goldpinger_instance) > 0
+  BY (instance, goldpinger_instance) > 0
 for: 5m
 annotations:
  description: |
@@ -247,3 +313,5 @@ Before you create that PR, please make sure you read [CONTRIBUTING](./CONTRIBUTI
 ## License

 Please read the [LICENSE](./LICENSE) file here.
+
+For each version built by travis, there is also an additional version, appended with `-vendor`, which contains all source code of the dependencies used in `goldpinger`.
--- a/build/Dockerfile-simple
+++ b/build/Dockerfile-simple
@@ -1,6 +1,6 @@
 FROM scratch

-ADD bin/goldpinger /goldpinger 
-COPY static/index.html /static/index.html
+COPY bin/goldpinger /goldpinger
+COPY static /static

 ENTRYPOINT ["/goldpinger", "--static-file-path", "/static"]
--- a/build/Dockerfile-vendor
+++ b/build/Dockerfile-vendor
@@ -0,0 +1,3 @@
+ARG TAG
+FROM $TAG
+COPY vendor /goldpinger-vendor-sources
--- a/cmd/goldpinger/main.go
+++ b/cmd/goldpinger/main.go
@@ -96,6 +96,14 @@ func main() {
 		goldpinger.GoldpingerConfig.Port = server.Port
 	}

+	if goldpinger.GoldpingerConfig.PodIP == "" {
+		log.Println("PodIP not set: pinging all pods")
+	}
+	if goldpinger.GoldpingerConfig.PingNumber == 0 {
+		log.Println("--ping-number set to 0: pinging all pods")
+	}
+	goldpinger.GoldpingerConfig.PodSelecter = goldpinger.NewPodSelecter(goldpinger.GoldpingerConfig.PingNumber, goldpinger.GoldpingerConfig.PodIP, goldpinger.GetAllPods)
+
 	server.ConfigureAPI()
 	goldpinger.StartUpdater()

--- a/docker_deploy.sh
+++ b/docker_deploy.sh
@@ -0,0 +1,8 @@
+#!/bin/sh
+
+docker login -u "$DOCKER_USER" -p "$DOCKER_PASSWORD" \
+    && make tag \
+    && make push \
+    && make vendor-tag \
+    && make vendor-push
+
--- a/extras/dns-screenshot.png
+++ b/extras/dns-screenshot.png
--- a/extras/example-serviceaccounts.yml
+++ b/extras/example-serviceaccounts.yml
@@ -1,4 +1,3 @@
-
 ---
 apiVersion: v1
 kind: ServiceAccount
@@ -26,22 +25,53 @@ spec:
        app: goldpinger
    spec:
      serviceAccount: "goldpinger-serviceaccount"
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
      containers:
        - name: goldpinger
          env:
            - name: HOST
              value: "0.0.0.0"
            - name: PORT
-              value: "80"
+              value: "8080"
            # injecting real hostname will make for easier to understand graphs/metrics
            - name: HOSTNAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
-          image: "docker.io/mynamespace-replaceme/goldpinger:1.1.0"
+            # podIP is used to select a randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
          ports:
-            - containerPort: 80
+            - containerPort: 8080
              name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
 ---
 apiVersion: v1
 kind: Service
@@ -53,7 +83,7 @@ metadata:
 spec:
  type: NodePort
  ports:
-    - port: 80
+    - port: 8080
      nodePort: 30080
      name: http
  selector:
--- a/extras/example-with-kubeconfig.yaml
+++ b/extras/example-with-kubeconfig.yaml
@@ -5,20 +5,24 @@ metadata:
  name: goldpinger
  labels:
    app: goldpinger
-    version: "1.1.0"
+    version: "2.0.0"
 spec:
  updateStrategy:
    type: RollingUpdate
  selector:
    matchLabels:
      app: goldpinger
-      version: "1.1.0"
+      version: "2.0.0"
  template:
    metadata:
      labels:
        app: goldpinger
-        version: "1.1.0"
+        version: "2.0.0"
    spec:
+      securityContext:
+        runAsNonRoot: true
+        runAsUser: 1000
+        fsGroup: 2000
      # if you'd like to use a secret to inject a kubeconfig, you can do it like this
      volumes:
      - name: kubeconfig
@@ -30,7 +34,7 @@ spec:
            - name: HOST
              value: "0.0.0.0"
            - name: PORT
-              value: "80"
+              value: "8080"
            # kubeconfig needs to match the location of what's injected in the secret
            # if not specified goldpinger will default to using in-cluster config
            - name: KUBECONFIG
@@ -43,10 +47,37 @@ spec:
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
-          image: "docker.io/mynamespace-replaceme/goldpinger:1.1.0"
+            # podIP is used to select randomized subset of nodes to ping.
+            - name: POD_IP
+              valueFrom:
+                fieldRef:
+                  fieldPath: status.podIP
+          image: "docker.io/bloomberg/goldpinger:2.0.0"
+          imagePullPolicy: Always
+          securityContext:
+            allowPrivilegeEscalation: false
+            readOnlyRootFilesystem: true
+          resources:
+            limits:
+              memory: 80Mi
+            requests:
+              cpu: 1m
+              memory: 40Mi
          ports:
-            - containerPort: 80
+            - containerPort: 8080
              name: http
+          readinessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
+          livenessProbe:
+            httpGet:
+              path: /healthz
+              port: 8080
+            initialDelaySeconds: 20
+            periodSeconds: 5
          volumeMounts:
          - mountPath: /.kube/
            name: kubeconfig
@@ -61,7 +92,7 @@ metadata:
 spec:
  type: NodePort
  ports:
-    - port: 80
+    - port: 8080
      nodePort: 30080
      name: http
  selector:
--- a/extras/goldpinger-dashboard.json
+++ b/extras/goldpinger-dashboard.json
@@ -33,7 +33,7 @@
            "rgba(237, 129, 40, 0.89)",
            "rgba(245, 54, 54, 0.9)"
          ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "format": "none",
@@ -113,7 +113,7 @@
            "rgba(237, 129, 40, 0.89)",
            "rgba(245, 54, 54, 0.9)"
          ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "format": "none",
@@ -199,7 +199,7 @@
              "value": "avg"
            }
          ],
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fontSize": "100%",
@@ -256,7 +256,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -340,7 +340,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -436,7 +436,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -519,7 +519,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -602,7 +602,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -697,7 +697,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -781,7 +781,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -865,7 +865,7 @@
          "bars": false,
          "dashLength": 10,
          "dashes": false,
-          "datasource": "K8S",
+          "datasource": "$datasource",
          "editable": true,
          "error": false,
          "fill": 1,
@@ -958,10 +958,25 @@
  "tags": [],
  "templating": {
    "list": [
+        {
+        "current": {
+          "text": "prometheus",
+          "value": "prometheus"
+        },
+        "hide": 0,
+        "label": "datasource",
+        "name": "datasource",
+        "options": [],
+        "query": "prometheus",
+        "refresh": 1,
+        "regex": "",
+        "skipUrlSync": false,
+        "type": "datasource"
+      },
      {
        "allValue": ".*",
        "current": {},
-        "datasource": "K8S",
+        "datasource": "$datasource",
        "hide": 0,
        "includeAll": true,
        "label": "Instance",
@@ -981,7 +996,7 @@
      {
        "allValue": ".*",
        "current": {},
-        "datasource": "K8S",
+        "datasource": "$datasource",
        "hide": 0,
        "includeAll": true,
        "label": "Call Type",
--- a/go.mod
+++ b/go.mod
@@ -0,0 +1,51 @@
+module github.com/bloomberg/goldpinger
+
+go 1.14
+
+require (
+	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
+	github.com/cespare/xxhash v1.1.0
+	github.com/ghodss/yaml v0.0.0-20150909031657-73d445a93680 // indirect
+	github.com/globalsign/mgo v0.0.0-20181015135952-eeefdecb41b8 // indirect
+	github.com/go-openapi/analysis v0.17.2 // indirect
+	github.com/go-openapi/errors v0.17.2
+	github.com/go-openapi/jsonpointer v0.17.2 // indirect
+	github.com/go-openapi/jsonreference v0.17.2 // indirect
+	github.com/go-openapi/loads v0.17.2
+	github.com/go-openapi/runtime v0.17.2
+	github.com/go-openapi/spec v0.17.2
+	github.com/go-openapi/strfmt v0.17.2
+	github.com/go-openapi/swag v0.17.2
+	github.com/go-openapi/validate v0.17.2
+	github.com/gogo/protobuf v0.0.0-20170330071051-c0656edd0d9e // indirect
+	github.com/golang/glog v0.0.0-20141105023935-44145f04b68c // indirect
+	github.com/google/btree v1.0.0 // indirect
+	github.com/google/gofuzz v0.0.0-20161122191042-44d81051d367 // indirect
+	github.com/googleapis/gnostic v0.0.0-20170729233727-0c5108395e2d // indirect
+	github.com/gregjones/httpcache v0.0.0-20170728041850-787624de3eb7 // indirect
+	github.com/imdario/mergo v0.3.5 // indirect
+	github.com/jessevdk/go-flags v1.4.0
+	github.com/json-iterator/go v0.0.0-20180612202835-f2b4162afba3 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
+	github.com/peterbourgon/diskv v2.0.1+incompatible // indirect
+	github.com/prometheus/client_golang v0.9.1
+	github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
+	github.com/prometheus/common v0.0.0-20181020173914-7e9e6cabbd39 // indirect
+	github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d // indirect
+	github.com/spf13/pflag v1.0.1 // indirect
+	github.com/stuartnelson3/go-rendezvous v0.2.0
+	golang.org/x/crypto v0.0.0-20180808211826-de0752318171 // indirect
+	golang.org/x/image v0.0.0-20190220214146-31aff87c08e9
+	golang.org/x/net v0.0.0-20181106065722-10aee1819953
+	golang.org/x/oauth2 v0.0.0-20170412232759-a6bd8cefa181 // indirect
+	golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a // indirect
+	golang.org/x/sys v0.0.0-20181106073832-7155702f2d47 // indirect
+	golang.org/x/time v0.0.0-20161028155119-f51c12702a4d // indirect
+	google.golang.org/appengine v1.3.0 // indirect
+	gopkg.in/inf.v0 v0.9.0 // indirect
+	k8s.io/api v0.0.0-20181004124137-fd83cbc87e76 // indirect
+	k8s.io/apimachinery v0.0.0-20180913025736-6dd46049f395
+	k8s.io/client-go v9.0.0+incompatible
+)
--- a/go.sum
+++ b/go.sum
@@ -0,0 +1,138 @@
+github.com/OneOfOne/xxhash v1.2.2 h1:KMrpdQIwFcEqXDklaen+P1axHaj9BSKzvpUUfnHldSE=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/PuerkitoBio/purell v1.1.0 h1:rmGxhojJlM0tuKtfdvliR84CFHljx9ag64t2xmVkjK4=
+github.com/PuerkitoBio/purell v1.1.0/go.mod h1:c11w/QuzBsJSee3cPx9rAFu61PvFxuPbtSwDGJws/X0=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 h1:d+Bc7a5rLufV/sSk/8dngufqelfh6jnri85riMAaF/M=
+github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578/go.mod h1:uGdkoq3SwY9Y+13GIhn11/XLaGBb4BfwItxLd5jeuXE=
+github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf h1:eg0MeVzsP1G42dRafH3vf+al2vQIJU0YHX+1Tw87oco=
+github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
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+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
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--- a/pkg/client/operations/check_service_pods_responses.go
+++ b/pkg/client/operations/check_service_pods_responses.go
@@ -47,7 +47,7 @@ func NewCheckServicePodsOK() *CheckServicePodsOK {
 Success, return response
 */
 type CheckServicePodsOK struct {
-	Payload models.CheckResults
+	Payload *models.CheckResults
 }

 func (o *CheckServicePodsOK) Error() string {
@@ -56,8 +56,10 @@ func (o *CheckServicePodsOK) Error() string {

 func (o *CheckServicePodsOK) readResponse(response runtime.ClientResponse, consumer runtime.Consumer, formats strfmt.Registry) error {

+	o.Payload = new(models.CheckResults)
+
 	// response payload
-	if err := consumer.Consume(response.Body(), &o.Payload); err != nil && err != io.EOF {
+	if err := consumer.Consume(response.Body(), o.Payload); err != nil && err != io.EOF {
 		return err
 	}

--- a/pkg/goldpinger/client.go
+++ b/pkg/goldpinger/client.go
@@ -15,7 +15,9 @@
 package goldpinger

 import (
+	"errors"
 	"fmt"
+	"net"
 	"sync"
 	"time"

@@ -27,14 +29,14 @@ import (

 // CheckNeighbours queries the kubernetes API server for all other goldpinger pods
 // then calls Ping() on each one
-func CheckNeighbours() models.CheckResults {
-	return PingAllPods(GetAllPods())
+func CheckNeighbours(ps *PodSelecter) *models.CheckResults {
+	return PingAllPods(ps.SelectPods())
 }

 // CheckNeighboursNeighbours queries the kubernetes API server for all other goldpinger
 // pods then calls Check() on each one
-func CheckNeighboursNeighbours() *models.CheckAllResults {
-	return CheckAllPods(GetAllPods())
+func CheckNeighboursNeighbours(ps *PodSelecter) *models.CheckAllResults {
+	return CheckAllPods(ps.SelectPods())
 }

 type PingAllPodsResult struct {
@@ -50,7 +52,25 @@ func pickPodHostIP(podIP, hostIP string) string {
 	return podIP
 }

-func PingAllPods(pods map[string]string) models.CheckResults {
+func checkDNS() *models.DNSResults {
+	results := models.DNSResults{}
+	for _, host := range GoldpingerConfig.DnsHosts {
+
+		var dnsResult models.DNSResult
+
+		start := time.Now()
+		_, err := net.LookupIP(host)
+		if err != nil {
+			dnsResult.Error = err.Error()
+			CountDnsError(host)
+		}
+		dnsResult.ResponseTimeMs = time.Since(start).Nanoseconds() / int64(time.Millisecond)
+		results[host] = dnsResult
+	}
+	return &results
+}
+
+func PingAllPods(pods map[string]string) *models.CheckResults {

 	result := models.CheckResults{}

@@ -61,34 +81,51 @@ func PingAllPods(pods map[string]string) models.CheckResults {
 	for podIP, hostIP := range pods {

 		go func(podIP string, hostIP string) {
-			var channelResult PingAllPodsResult

+			// metrics
 			CountCall("made", "ping")
 			timer := GetLabeledPeersCallsTimer("ping", hostIP, podIP)
 			start := time.Now()
-			resp, err := getClient(pickPodHostIP(podIP, hostIP)).Operations.Ping(nil)

+			// setup
+			var channelResult PingAllPodsResult
 			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			var OK = (err == nil)
-			if OK {
-				responseTime := time.Since(start).Nanoseconds() / int64(time.Millisecond)
-				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Response: resp.Payload, StatusCode: 200, ResponseTimeMs: responseTime}
-				timer.ObserveDuration()
-			} else {
-				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 500}
-				CountError("ping")
-			}
 			channelResult.podIP = podIP

+			OK := false
+			var responseTime int64
+			client, err := getClient(pickPodHostIP(podIP, hostIP))
+
+			if err != nil {
+				channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 500, ResponseTimeMs: responseTime}
+				channelResult.podIP = hostIP
+				CountError("ping")
+			} else {
+				resp, err := client.Operations.Ping(nil)
+				responseTime = time.Since(start).Nanoseconds() / int64(time.Millisecond)
+				OK = (err == nil)
+				if OK {
+					channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Response: resp.Payload, StatusCode: 200, ResponseTimeMs: responseTime}
+					timer.ObserveDuration()
+				} else {
+					channelResult.podResult = models.PodResult{HostIP: channelResult.hostIPv4, OK: &OK, Error: err.Error(), StatusCode: 504, ResponseTimeMs: responseTime}
+					CountError("ping")
+				}
+			}
+
 			ch <- channelResult
 			wg.Done()
 		}(podIP, hostIP)
 	}
+	if len(GoldpingerConfig.DnsHosts) > 0 {
+		result.DNSResults = *checkDNS()
+	}
 	wg.Wait()
 	close(ch)

 	counterHealthy, counterUnhealthy := 0.0, 0.0

+	result.PodResults = make(map[string]models.PodResult)
 	for response := range ch {
 		var podIPv4 strfmt.IPv4
 		podIPv4.UnmarshalText([]byte(response.podIP))
@@ -97,10 +134,10 @@ func PingAllPods(pods map[string]string) models.CheckResults {
 		} else {
 			counterUnhealthy++
 		}
-		result[response.podIP] = response.podResult
+		result.PodResults[response.podIP] = response.podResult
 	}
 	CountHealthyUnhealthyNodes(counterHealthy, counterUnhealthy)
-	return result
+	return &result
 }

 type CheckServicePodsResult struct {
@@ -120,30 +157,45 @@ func CheckAllPods(pods map[string]string) *models.CheckAllResults {
 	for podIP, hostIP := range pods {

 		go func(podIP string, hostIP string) {
-			var channelResult CheckServicePodsResult

+			// stats
 			CountCall("made", "check")
 			timer := GetLabeledPeersCallsTimer("check", hostIP, podIP)
-			resp, err := getClient(pickPodHostIP(podIP, hostIP)).Operations.CheckServicePods(nil)

+			// setup
+			var channelResult CheckServicePodsResult
 			channelResult.hostIPv4.UnmarshalText([]byte(hostIP))
-			var OK = (err == nil)
-			if OK {
-				channelResult.checkAllPodResult = models.CheckAllPodResult{
-					OK:       &OK,
-					HostIP:   channelResult.hostIPv4,
-					Response: resp.Payload,
-				}
-				timer.ObserveDuration()
-			} else {
+			channelResult.podIP = podIP
+			client, err := getClient(pickPodHostIP(podIP, hostIP))
+			OK := false
+
+			if err != nil {
 				channelResult.checkAllPodResult = models.CheckAllPodResult{
 					OK:     &OK,
 					HostIP: channelResult.hostIPv4,
 					Error:  err.Error(),
 				}
+				channelResult.podIP = hostIP
 				CountError("checkAll")
+			} else {
+				resp, err := client.Operations.CheckServicePods(nil)
+				OK = (err == nil)
+				if OK {
+					channelResult.checkAllPodResult = models.CheckAllPodResult{
+						OK:       &OK,
+						HostIP:   channelResult.hostIPv4,
+						Response: resp.Payload,
+					}
+					timer.ObserveDuration()
+				} else {
+					channelResult.checkAllPodResult = models.CheckAllPodResult{
+						OK:     &OK,
+						HostIP: channelResult.hostIPv4,
+						Error:  err.Error(),
+					}
+					CountError("checkAll")
+				}
 			}
-			channelResult.podIP = podIP

 			ch <- channelResult
 			wg.Done()
@@ -161,6 +213,18 @@ func CheckAllPods(pods map[string]string) *models.CheckAllResults {
 			HostIP: response.hostIPv4,
 			PodIP:  podIPv4,
 		})
+		if response.checkAllPodResult.Response != nil &&
+			response.checkAllPodResult.Response.DNSResults != nil {
+			if result.DNSResults == nil {
+				result.DNSResults = make(map[string]models.DNSResults)
+			}
+			for host := range response.checkAllPodResult.Response.DNSResults {
+				if result.DNSResults[host] == nil {
+					result.DNSResults[host] = make(map[string]models.DNSResult)
+				}
+				result.DNSResults[host][response.podIP] = response.checkAllPodResult.Response.DNSResults[host]
+			}
+		}
 	}
 	return &result
 }
@@ -176,11 +240,14 @@ func HealthCheck() *models.HealthCheckResults {
 	return &result
 }

-func getClient(hostIP string) *apiclient.Goldpinger {
+func getClient(hostIP string) (*apiclient.Goldpinger, error) {
+	if hostIP == "" {
+		return nil, errors.New("Host or pod IP empty, can't make a call")
+	}
 	host := fmt.Sprintf("%s:%d", hostIP, GoldpingerConfig.Port)
 	transport := httptransport.New(host, "", nil)
 	client := apiclient.New(transport, strfmt.Default)
 	apiclient.Default.SetTransport(transport)

-	return client
+	return client, nil
 }
--- a/pkg/goldpinger/config.go
+++ b/pkg/goldpinger/config.go
@@ -24,8 +24,13 @@ var GoldpingerConfig = struct {
 	KubeConfigPath   string `long:"kubeconfig" description:"Path to kubeconfig file" env:"KUBECONFIG"`
 	RefreshInterval  int    `long:"refresh-interval" description:"If > 0, will create a thread and collect stats every n seconds" env:"REFRESH_INTERVAL" default:"30"`
 	Hostname         string `long:"hostname" description:"Hostname to use" env:"HOSTNAME"`
+	PodIP            string `long:"pod-ip" description:"Pod IP to use" env:"POD_IP"`
+	PingNumber       uint   `long:"ping-number" description:"Number of peers to ping. A value of 0 indicates all peers should be pinged." default:"0" env:"PING_NUMBER"`
 	Port             int    `long:"client-port-override" description:"(for testing) use this port when calling other instances" env:"CLIENT_PORT_OVERRIDE"`
 	UseHostIP        bool   `long:"use-host-ip" description:"When making the calls, use host ip (defaults to pod ip)" env:"USE_HOST_IP"`
 	LabelSelector    string `long:"label-selector" description:"label selector to use to discover goldpinger pods in the cluster" env:"LABEL_SELECTOR" default:"app=goldpinger"`
 	KubernetesClient *kubernetes.Clientset
+	*PodSelecter
+
+	DnsHosts         []string `long:"host-to-resolve" description:"A host to attempt dns resolve on (space delimited)" env:"HOSTS_TO_RESOLVE" env-delim:" "`
 }{}
--- a/pkg/goldpinger/heatmap.go
+++ b/pkg/goldpinger/heatmap.go
@@ -0,0 +1,146 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// This file is safe to edit. Once it exists it will not be overwritten
+
+package goldpinger
+
+import (
+	"bytes"
+	"fmt"
+	"image"
+	"image/color"
+	"image/png"
+	"log"
+	"net/http"
+	"sort"
+	"strconv"
+
+	"golang.org/x/image/font"
+	"golang.org/x/image/font/basicfont"
+	"golang.org/x/image/math/fixed"
+)
+
+func addLabel(img *image.RGBA, x, y int, text string) {
+	drawer := &font.Drawer{
+		Dst:  img,
+		Src:  image.NewUniform(color.RGBA{25, 200, 25, 255}),
+		Face: basicfont.Face7x13,
+		Dot:  fixed.Point26_6{fixed.Int26_6(x * 64), fixed.Int26_6(y * 64)},
+	}
+	drawer.DrawString(text)
+}
+
+// Calculates the color of the box to draw based on the latency and tresholds
+// We are aiming at slightly more palatable colors than just moving from 255 green to 255 red,
+// so we will use 25B, and then move from (25R, 200G) to (200R, 25G), so our scale is effectively 350 points
+func getPingBoxColor(latency int64, tresholdLatencies [3]int64) *color.RGBA {
+	var red, green uint8 = 25, 200
+	if latency > tresholdLatencies[2] {
+		red, green = 200, 25
+	} else if latency >= tresholdLatencies[1] {
+		red, green = 200, 200
+		diff := (float32(latency-tresholdLatencies[1]) / float32(tresholdLatencies[2]-tresholdLatencies[1])) * 175
+		green = green - uint8(diff)
+	} else if latency >= tresholdLatencies[0] {
+		red, green = 25, 200
+		diff := (float32(latency-tresholdLatencies[0]) / float32(tresholdLatencies[1]-tresholdLatencies[0])) * 175
+		red = red + uint8(diff)
+	}
+	return &color.RGBA{red, green, 25, 255}
+}
+
+func drawPingBox(img *image.RGBA, _x, _y, size int, color *color.RGBA) {
+	for x := _x; x < _x+size; x++ {
+		for y := _y; y < _y+size; y++ {
+			img.Set(x, y, *color)
+		}
+	}
+}
+
+func getPingBoxCoordinates(col, row, boxSize, padding int) (int, int) {
+	return col * (boxSize + padding), row * (boxSize + padding)
+}
+
+// HeatmapHandler returns a PNG with a heatmap representation
+func HeatmapHandler(w http.ResponseWriter, r *http.Request) {
+
+	// parse the query to set the parameters
+	query := r.URL.Query()
+
+	// get the results
+	checkResults := CheckAllPods(GetAllPods())
+
+	// set some sizes
+	numberOfPods := len(checkResults.Responses)
+	legendSize := 200
+	boxSize := 14
+	paddingSize := 1
+	heatmapSize := numberOfPods*(boxSize+paddingSize) + boxSize*2
+	tresholdLatencies := [3]int64{1, 10, 100}
+	for index := range tresholdLatencies {
+		stringValue := query["t"+fmt.Sprintf("%d", index)]
+		if len(stringValue) == 0 {
+			continue
+		}
+		if v, err := strconv.ParseInt(stringValue[0], 0, 64); err == nil && v >= 0 {
+			tresholdLatencies[index] = v
+		}
+	}
+
+	canvas := image.NewRGBA(image.Rect(0, 0, heatmapSize+legendSize, heatmapSize))
+
+	// establish an order and fix the max delay
+	var keys []string
+	for sourceIP := range checkResults.Responses {
+		keys = append(keys, sourceIP)
+	}
+	sort.Strings(keys)
+	order := make(map[string]int)
+	for index, key := range keys {
+		order[key] = index
+	}
+
+	// draw all the boxes
+	for sourceIP, results := range checkResults.Responses {
+		if *results.OK {
+			for destinationIP, response := range results.Response.PodResults {
+				x, y := getPingBoxCoordinates(order[sourceIP], order[destinationIP], boxSize, paddingSize)
+				color := getPingBoxColor(response.ResponseTimeMs, tresholdLatencies)
+				drawPingBox(canvas, boxSize+x, boxSize+y, boxSize, color)
+			}
+		}
+	}
+
+	// draw the legend
+	for index, ip := range keys {
+		// ip
+		addLabel(canvas, heatmapSize, (index+1)*(boxSize+paddingSize)+13, fmt.Sprintf("%d", index)+": "+ip)
+		// rows
+		addLabel(canvas, 0, (index+1)*(boxSize+paddingSize)+13, fmt.Sprintf("%d", index))
+		// columns
+		addLabel(canvas, (index+1)*(boxSize+paddingSize), 13, fmt.Sprintf("%d", index))
+	}
+
+	buffer := new(bytes.Buffer)
+	if err := png.Encode(buffer, canvas); err != nil {
+		log.Println("error encoding png", err)
+	}
+
+	w.Header().Set("Content-Type", "image/png")
+	w.Header().Set("Content-Length", strconv.Itoa(len(buffer.Bytes())))
+	if _, err := w.Write(buffer.Bytes()); err != nil {
+		log.Println("error writing heatmap buffer out", err)
+	}
+}
--- a/pkg/goldpinger/pod_selecter.go
+++ b/pkg/goldpinger/pod_selecter.go
@@ -0,0 +1,61 @@
+// Copyright 2018 Bloomberg Finance L.P.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package goldpinger
+
+import (
+	"github.com/cespare/xxhash"
+	rendezvous "github.com/stuartnelson3/go-rendezvous"
+)
+
+// PodSelecter selects the result of getPods() down to count instances
+// according to a rendezvous hash.
+type PodSelecter struct {
+	count   uint
+	podIP   string
+	getPods func() map[string]string
+}
+
+// NewPodSelecter creates a new PodSelecter struct.
+func NewPodSelecter(count uint, podIP string, getPods func() map[string]string) *PodSelecter {
+	if podIP == "" {
+		// If podIP is blank, then we can't use the rendezvous hash to
+		// assign the IP correctly. Setting count=0 will force all pods
+		// to be pinged.
+		count = 0
+	}
+	return &PodSelecter{
+		count:   count,
+		podIP:   podIP,
+		getPods: getPods,
+	}
+}
+
+// SelectPods returns a map of pods filtered according to its configuration.
+func (p *PodSelecter) SelectPods() map[string]string {
+	allPods := p.getPods()
+	if p.count == 0 || p.count >= uint(len(allPods)) {
+		return allPods
+	}
+	rzv := rendezvous.New([]string{}, rendezvous.Hasher(xxhash.Sum64String))
+	for podIP := range allPods {
+		rzv.Add(podIP)
+	}
+	matches := rzv.LookupN(p.podIP, p.count)
+	toPing := make(map[string]string)
+	for _, podIP := range matches {
+		toPing[podIP] = allPods[podIP]
+	}
+	return toPing
+}
--- a/pkg/goldpinger/stats.go
+++ b/pkg/goldpinger/stats.go
@@ -82,6 +82,16 @@ var (
 			"type",
 		},
 	)
+	goldpingerDnsErrorsCounter = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Name: "goldpinger_dns_errors_total",
+			Help: "Statistics of DNS errors per instance",
+		},
+		[]string{
+			"goldpinger_instance",
+			"host",
+		},
+	)

 	bootTime = time.Now()
 )
@@ -92,6 +102,7 @@ func init() {
 	prometheus.MustRegister(goldpingerResponseTimePeersHistogram)
 	prometheus.MustRegister(goldpingerResponseTimeKubernetesHistogram)
 	prometheus.MustRegister(goldpingerErrorsCounter)
+	prometheus.MustRegister(goldpingerDnsErrorsCounter)
 	log.Println("Metrics setup - see /metrics")
 }

@@ -131,6 +142,14 @@ func CountError(errorType string) {
 	).Inc()
 }

+// counts instances of dns errors
+func CountDnsError(host string) {
+	goldpingerDnsErrorsCounter.WithLabelValues(
+		GoldpingerConfig.Hostname,
+		host,
+	).Inc()
+}
+
 // returns a timer for easy observing of the durations of calls to kubernetes API
 func GetLabeledKubernetesCallsTimer() *prometheus.Timer {
 	return prometheus.NewTimer(
--- a/pkg/goldpinger/updater.go
+++ b/pkg/goldpinger/updater.go
@@ -21,17 +21,17 @@ import (
 )

 func StartUpdater() {
-
 	if GoldpingerConfig.RefreshInterval <= 0 {
 		log.Println("Not creating updater, period is 0")
 		return
 	}
+
 	// start the updater
 	go func() {
 		for {
-			results := PingAllPods(GetAllPods())
+			results := PingAllPods(GoldpingerConfig.PodSelecter.SelectPods())
 			var troublemakers []string
-			for podIP, value := range results {
+			for podIP, value := range results.PodResults {
 				if *value.OK != true {
 					troublemakers = append(troublemakers, fmt.Sprintf("%s (%s)", podIP, value.HostIP.String()))
 				}
--- a/pkg/models/check_all_pod_result.go
+++ b/pkg/models/check_all_pod_result.go
@@ -28,7 +28,7 @@ type CheckAllPodResult struct {
 	Error string `json:"error,omitempty"`

 	// response
-	Response CheckResults `json:"response,omitempty"`
+	Response *CheckResults `json:"response,omitempty"`

 	// status code
 	StatusCode int32 `json:"status-code,omitempty"`
@@ -71,11 +71,13 @@ func (m *CheckAllPodResult) validateResponse(formats strfmt.Registry) error {
 		return nil
 	}

-	if err := m.Response.Validate(formats); err != nil {
-		if ve, ok := err.(*errors.Validation); ok {
-			return ve.ValidateName("response")
+	if m.Response != nil {
+		if err := m.Response.Validate(formats); err != nil {
+			if ve, ok := err.(*errors.Validation); ok {
+				return ve.ValidateName("response")
+			}
+			return err
 		}
-		return err
 	}

 	return nil
--- a/pkg/models/check_all_results.go
+++ b/pkg/models/check_all_results.go
@@ -22,6 +22,9 @@ type CheckAllResults struct {
 	// o k
 	OK *bool `json:"OK,omitempty"`

+	// dns results
+	DNSResults map[string]DNSResults `json:"dnsResults,omitempty"`
+
 	// hosts
 	Hosts []*CheckAllResultsHostsItems0 `json:"hosts"`

@@ -39,6 +42,10 @@ type CheckAllResults struct {
 func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	var res []error

+	if err := m.validateDNSResults(formats); err != nil {
+		res = append(res, err)
+	}
+
 	if err := m.validateHosts(formats); err != nil {
 		res = append(res, err)
 	}
@@ -53,6 +60,25 @@ func (m *CheckAllResults) Validate(formats strfmt.Registry) error {
 	return nil
 }

+func (m *CheckAllResults) validateDNSResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.DNSResults) { // not required
+		return nil
+	}
+
+	for k := range m.DNSResults {
+
+		if val, ok := m.DNSResults[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
 func (m *CheckAllResults) validateHosts(formats strfmt.Registry) error {

 	if swag.IsZero(m.Hosts) { // not required
--- a/pkg/models/check_results.go
+++ b/pkg/models/check_results.go
@@ -9,28 +9,31 @@ import (
 	strfmt "github.com/go-openapi/strfmt"

 	"github.com/go-openapi/errors"
+	"github.com/go-openapi/swag"
 	"github.com/go-openapi/validate"
 )

 // CheckResults check results
 // swagger:model CheckResults
-type CheckResults map[string]PodResult
+type CheckResults struct {
+
+	// dns results
+	DNSResults DNSResults `json:"dnsResults,omitempty"`
+
+	// pod results
+	PodResults map[string]PodResult `json:"podResults,omitempty"`
+}

 // Validate validates this check results
-func (m CheckResults) Validate(formats strfmt.Registry) error {
+func (m *CheckResults) Validate(formats strfmt.Registry) error {
 	var res []error

-	for k := range m {
-
-		if err := validate.Required(k, "body", m[k]); err != nil {
-			return err
-		}
-		if val, ok := m[k]; ok {
-			if err := val.Validate(formats); err != nil {
-				return err
-			}
-		}
+	if err := m.validateDNSResults(formats); err != nil {
+		res = append(res, err)
+	}

+	if err := m.validatePodResults(formats); err != nil {
+		res = append(res, err)
 	}

 	if len(res) > 0 {
@@ -38,3 +41,59 @@ func (m CheckResults) Validate(formats strfmt.Registry) error {
 	}
 	return nil
 }
+
+func (m *CheckResults) validateDNSResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.DNSResults) { // not required
+		return nil
+	}
+
+	if err := m.DNSResults.Validate(formats); err != nil {
+		if ve, ok := err.(*errors.Validation); ok {
+			return ve.ValidateName("dnsResults")
+		}
+		return err
+	}
+
+	return nil
+}
+
+func (m *CheckResults) validatePodResults(formats strfmt.Registry) error {
+
+	if swag.IsZero(m.PodResults) { // not required
+		return nil
+	}
+
+	for k := range m.PodResults {
+
+		if err := validate.Required("podResults"+"."+k, "body", m.PodResults[k]); err != nil {
+			return err
+		}
+		if val, ok := m.PodResults[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *CheckResults) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *CheckResults) UnmarshalBinary(b []byte) error {
+	var res CheckResults
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}
--- a/pkg/models/dns_result.go
+++ b/pkg/models/dns_result.go
@@ -0,0 +1,46 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	strfmt "github.com/go-openapi/strfmt"
+
+	"github.com/go-openapi/swag"
+)
+
+// DNSResult Dns result
+// swagger:model DnsResult
+type DNSResult struct {
+
+	// error
+	Error string `json:"error,omitempty"`
+
+	// response time ms
+	ResponseTimeMs int64 `json:"response-time-ms,omitempty"`
+}
+
+// Validate validates this Dns result
+func (m *DNSResult) Validate(formats strfmt.Registry) error {
+	return nil
+}
+
+// MarshalBinary interface implementation
+func (m *DNSResult) MarshalBinary() ([]byte, error) {
+	if m == nil {
+		return nil, nil
+	}
+	return swag.WriteJSON(m)
+}
+
+// UnmarshalBinary interface implementation
+func (m *DNSResult) UnmarshalBinary(b []byte) error {
+	var res DNSResult
+	if err := swag.ReadJSON(b, &res); err != nil {
+		return err
+	}
+	*m = res
+	return nil
+}
--- a/pkg/models/dns_results.go
+++ b/pkg/models/dns_results.go
@@ -0,0 +1,40 @@
+// Code generated by go-swagger; DO NOT EDIT.
+
+package models
+
+// This file was generated by the swagger tool.
+// Editing this file might prove futile when you re-run the swagger generate command
+
+import (
+	strfmt "github.com/go-openapi/strfmt"
+
+	"github.com/go-openapi/errors"
+	"github.com/go-openapi/validate"
+)
+
+// DNSResults Dns results
+// swagger:model DnsResults
+type DNSResults map[string]DNSResult
+
+// Validate validates this Dns results
+func (m DNSResults) Validate(formats strfmt.Registry) error {
+	var res []error
+
+	for k := range m {
+
+		if err := validate.Required(k, "body", m[k]); err != nil {
+			return err
+		}
+		if val, ok := m[k]; ok {
+			if err := val.Validate(formats); err != nil {
+				return err
+			}
+		}
+
+	}
+
+	if len(res) > 0 {
+		return errors.CompositeValidationError(res...)
+	}
+	return nil
+}
--- a/pkg/restapi/configure_goldpinger.go
+++ b/pkg/restapi/configure_goldpinger.go
@@ -47,6 +47,7 @@ func configureFlags(api *operations.GoldpingerAPI) {

 func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	// configure the api here
+	ps := goldpinger.GoldpingerConfig.PodSelecter
 	api.ServeError = errors.ServeError

 	api.JSONConsumer = runtime.JSONConsumer()
@@ -61,13 +62,13 @@ func configureAPI(api *operations.GoldpingerAPI) http.Handler {
 	api.CheckServicePodsHandler = operations.CheckServicePodsHandlerFunc(
 		func(params operations.CheckServicePodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check")
-			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours())
+			return operations.NewCheckServicePodsOK().WithPayload(goldpinger.CheckNeighbours(ps))
 		})

 	api.CheckAllPodsHandler = operations.CheckAllPodsHandlerFunc(
 		func(params operations.CheckAllPodsParams) middleware.Responder {
 			goldpinger.CountCall("received", "check_all")
-			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours())
+			return operations.NewCheckAllPodsOK().WithPayload(goldpinger.CheckNeighboursNeighbours(ps))
 		})

 	api.HealthzHandler = operations.HealthzHandlerFunc(
@@ -110,6 +111,8 @@ func fileServerMiddleware(next http.Handler) http.Handler {
 		fileServer := http.FileServer(http.Dir(goldpinger.GoldpingerConfig.StaticFilePath))
 		if r.URL.Path == "/" {
 			http.StripPrefix("/", fileServer).ServeHTTP(w, r)
+		} else if r.URL.Path == "/heatmap.png" {
+			goldpinger.HeatmapHandler(w, r)
 		} else if strings.HasPrefix(r.URL.Path, "/static/") {
 			http.StripPrefix("/static/", fileServer).ServeHTTP(w, r)
 		} else {
--- a/pkg/restapi/doc.go
+++ b/pkg/restapi/doc.go
@@ -7,7 +7,7 @@ Package restapi Goldpinger
      http
    Host: localhost
    BasePath: /
-    Version: 1.0.0
+    Version: 2.0.0

    Consumes:
    - application/json
--- a/pkg/restapi/embedded_spec.go
+++ b/pkg/restapi/embedded_spec.go
@@ -21,7 +21,7 @@ func init() {
  "swagger": "2.0",
  "info": {
    "title": "Goldpinger",
-    "version": "1.0.0"
+    "version": "2.0.0"
  },
  "paths": {
    "/check": {
@@ -143,6 +143,12 @@ func init() {
          "type": "boolean",
          "default": false
        },
+        "dnsResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/DnsResults"
+          }
+        },
        "hosts": {
          "type": "array",
          "items": {
@@ -176,9 +182,34 @@ func init() {
      }
    },
    "CheckResults": {
+      "type": "object",
+      "properties": {
+        "dnsResults": {
+          "$ref": "#/definitions/DnsResults"
+        },
+        "podResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/PodResult"
+          }
+        }
+      }
+    },
+    "DnsResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "DnsResults": {
      "type": "object",
      "additionalProperties": {
-        "$ref": "#/definitions/PodResult"
+        "$ref": "#/definitions/DnsResult"
      }
    },
    "HealthCheckResults": {
@@ -244,7 +275,7 @@ func init() {
  "swagger": "2.0",
  "info": {
    "title": "Goldpinger",
-    "version": "1.0.0"
+    "version": "2.0.0"
  },
  "paths": {
    "/check": {
@@ -366,6 +397,12 @@ func init() {
          "type": "boolean",
          "default": false
        },
+        "dnsResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/DnsResults"
+          }
+        },
        "hosts": {
          "type": "array",
          "items": {
@@ -399,9 +436,34 @@ func init() {
      }
    },
    "CheckResults": {
+      "type": "object",
+      "properties": {
+        "dnsResults": {
+          "$ref": "#/definitions/DnsResults"
+        },
+        "podResults": {
+          "type": "object",
+          "additionalProperties": {
+            "$ref": "#/definitions/PodResult"
+          }
+        }
+      }
+    },
+    "DnsResult": {
+      "properties": {
+        "error": {
+          "type": "string"
+        },
+        "response-time-ms": {
+          "type": "number",
+          "format": "int64"
+        }
+      }
+    },
+    "DnsResults": {
      "type": "object",
      "additionalProperties": {
-        "$ref": "#/definitions/PodResult"
+        "$ref": "#/definitions/DnsResult"
      }
    },
    "HealthCheckResults": {
--- a/pkg/restapi/operations/check_service_pods_responses.go
+++ b/pkg/restapi/operations/check_service_pods_responses.go
@@ -25,7 +25,7 @@ type CheckServicePodsOK struct {
 	/*
 	  In: Body
 	*/
-	Payload models.CheckResults `json:"body,omitempty"`
+	Payload *models.CheckResults `json:"body,omitempty"`
 }

 // NewCheckServicePodsOK creates CheckServicePodsOK with default headers values
@@ -35,13 +35,13 @@ func NewCheckServicePodsOK() *CheckServicePodsOK {
 }

 // WithPayload adds the payload to the check service pods o k response
-func (o *CheckServicePodsOK) WithPayload(payload models.CheckResults) *CheckServicePodsOK {
+func (o *CheckServicePodsOK) WithPayload(payload *models.CheckResults) *CheckServicePodsOK {
 	o.Payload = payload
 	return o
 }

 // SetPayload sets the payload to the check service pods o k response
-func (o *CheckServicePodsOK) SetPayload(payload models.CheckResults) {
+func (o *CheckServicePodsOK) SetPayload(payload *models.CheckResults) {
 	o.Payload = payload
 }

@@ -49,13 +49,10 @@ func (o *CheckServicePodsOK) SetPayload(payload models.CheckResults) {
 func (o *CheckServicePodsOK) WriteResponse(rw http.ResponseWriter, producer runtime.Producer) {

 	rw.WriteHeader(200)
-	payload := o.Payload
-	if payload == nil {
-		// return empty map
-		payload = models.CheckResults{}
-	}
-
-	if err := producer.Produce(rw, payload); err != nil {
-		panic(err) // let the recovery middleware deal with this
+	if o.Payload != nil {
+		payload := o.Payload
+		if err := producer.Produce(rw, payload); err != nil {
+			panic(err) // let the recovery middleware deal with this
+		}
 	}
 }
--- a/pkg/restapi/operations/goldpinger_api.go
+++ b/pkg/restapi/operations/goldpinger_api.go
@@ -65,13 +65,13 @@ type GoldpingerAPI struct {
 	Middleware      func(middleware.Builder) http.Handler

 	// BasicAuthenticator generates a runtime.Authenticator from the supplied basic auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BasicAuthenticator func(security.UserPassAuthentication) runtime.Authenticator
 	// APIKeyAuthenticator generates a runtime.Authenticator from the supplied token auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	APIKeyAuthenticator func(string, string, security.TokenAuthentication) runtime.Authenticator
 	// BearerAuthenticator generates a runtime.Authenticator from the supplied bearer token auth function.
-	// It has a default implemention in the security package, however you can replace it for your particular usage.
+	// It has a default implementation in the security package, however you can replace it for your particular usage.
 	BearerAuthenticator func(string, security.ScopedTokenAuthentication) runtime.Authenticator

 	// JSONConsumer registers a consumer for a "application/json" mime type
--- a/pkg/restapi/server.go
+++ b/pkg/restapi/server.go
@@ -87,7 +87,7 @@ type Server struct {
 	TLSHost           string         `long:"tls-host" description:"the IP to listen on for tls, when not specified it's the same as --host" env:"TLS_HOST"`
 	TLSPort           int            `long:"tls-port" description:"the port to listen on for secure connections, defaults to a random value" env:"TLS_PORT"`
 	TLSCertificate    flags.Filename `long:"tls-certificate" description:"the certificate to use for secure connections" env:"TLS_CERTIFICATE"`
-	TLSCertificateKey flags.Filename `long:"tls-key" description:"the private key to use for secure conections" env:"TLS_PRIVATE_KEY"`
+	TLSCertificateKey flags.Filename `long:"tls-key" description:"the private key to use for secure connections" env:"TLS_PRIVATE_KEY"`
 	TLSCACertificate  flags.Filename `long:"tls-ca" description:"the certificate authority file to be used with mutual tls auth" env:"TLS_CA_CERTIFICATE"`
 	TLSListenLimit    int            `long:"tls-listen-limit" description:"limit the number of outstanding requests"`
 	TLSKeepAlive      time.Duration  `long:"tls-keep-alive" description:"sets the TCP keep-alive timeouts on accepted connections. It prunes dead TCP connections ( e.g. closing laptop mid-download)"`
--- a/static/index.html
+++ b/static/index.html
@@ -49,7 +49,7 @@ limitations under the License.
        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.parallelEdges.min.js"></script>
        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.renderers.snapshot.min.js"></script>
        <script type="text/javascript" src="static/sigma.js/1.1.0/plugins/sigma.statistics.HITS.min.js"></script>
-        
+
        <!-- Bootstrap -->
        <link rel="stylesheet" href="static/bootstrap/3.3.7/css/bootstrap.min.css" crossorigin="anonymous">
        <link rel="stylesheet" href="static/bootstrap/3.3.7/css/bootstrap-theme.min.css" crossorigin="anonymous">
@@ -86,6 +86,7 @@ limitations under the License.
          <ul class="nav navbar-nav">
            <li class="active"><a href="#">Graph</a></li>
            <li><a href="#" id="show-data">Data</a></li>
+            <li><a href="#" id="show-heatmap">Heatmap</a></li>
            <li><a href="check_all" >Raw</a></li>
            <li><a href="metrics" >Metrics</a></li>
          </ul>
@@ -106,24 +107,70 @@ limitations under the License.

    </div>

-        <div id="modal-window-code" class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel">
-                <div class="modal-dialog modal-lg" role="document">
-                        <div class="modal-content">
-                                <div class="modal-header">
-                                        <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
-                                        <h4 class="modal-title" id="modal-title">title</h4>
-                                </div>
-                                <div class="modal-body" id="modal-body">
-                                body
-                                </div>
-                                <div class="modal-footer">
-                                        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
-                                </div>
+    <div id="modal-window-code" class="modal fade bs-example-modal-lg" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel">
+        <div class="modal-dialog modal-lg" role="document">
+                <div class="modal-content">
+                        <div class="modal-header">
+                                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+                                <h4 class="modal-title" id="modal-title">title</h4>
+                        </div>
+                        <div class="modal-body" id="modal-body">
+                        body
+                        </div>
+                        <div class="modal-footer">
+                                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
                        </div>
                </div>
        </div>
+</div>
+
+
+<div id="modal-window-heatmap" class="modal fade bs-example-modal-lg" tabindex="-2" role="dialog" aria-labelledby="myLargeModalLabel">
+        <div class="modal-dialog modal-lg" role="document">
+                <div class="modal-content">
+                        <div class="modal-header">
+                                <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+                                <h4 class="modal-title" id="modal-title">Heatmap</h4>
+                        </div>
+                        <div class="modal-body">
+
+                                <div id="heatmap-body" style="padding: 10px"></div>
+
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Good threshold</span>
+                                        <input id="t0" type="number" step="1" class="form-control" placeholder="2" value="2">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Warning threshold</span>
+                                        <input id="t1" type="number" step="1" class="form-control" placeholder="5" value="5">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                                <div class="input-group">
+                                        <span class="input-group-addon" style="width: 200px">Problem threshold</span>
+                                        <input id="t2" type="number" step="1" class="form-control" placeholder="100" value="100">
+                                        <span class="input-group-addon">milliseconds</span>
+                                </div>
+                        </div>
+                        <div class="modal-footer">
+                                <button class="btn btn-success" id="update-heatmap" type="button">refresh</button>
+                                <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
+                        </div>
+                </div>
+        </div>
+</div>
+

 <script>
+
+var getHeatmapUrl = function(){
+        return "heatmap.png?"
+                +  "t0=" + Number($("#t0").val())
+                + "&t1=" + Number($("#t1").val())
+                + "&t2=" + Number($("#t2").val())
+                + "&now=" + Date.now();
+}
+
 var fetchJSON = function(url) {
        return new Promise(function(resolve, reject) {
                console.log("calling " + url);
@@ -172,7 +219,7 @@ var main = function(timeout){

        loadingDialog(true);

-        fetchJSON("/check_all?timeout="+timeout)
+        fetchJSON("check_all?timeout="+timeout)
        .then(function(data){

                loadingDialog(false);
@@ -182,6 +229,8 @@ var main = function(timeout){

                // prepare nodes
                var nodes = [];
+                var dnsCheckNodes = [];
+                var podIPs = [];
                var resp = data.responses;
                for (let podIP in resp) {
                        let value = resp[podIP];
@@ -192,14 +241,14 @@ var main = function(timeout){
                                "y": 0,
                                _data: value,
                        });
+                        podIPs.push(podIP);
                };
-                //console.log(nodes);

                // prepare the edges
                var edges = [];
                var resp = data.responses;
                for (let callId in resp) {
-                        var call = resp[callId].response;
+                        var call = resp[callId].response['podResults'];
                        if (typeof call !== 'string'){
                                for (let target in call) {
                                        edges.push({
@@ -210,8 +259,61 @@ var main = function(timeout){
                                };
                        }
                };
-                //console.log(edges);

+                console.log(edges);
+                console.log(nodes);
+
+                // if running goldpinger with PING_NUMBER, then we need to add nodes for the edges
+                // that are not reporting but are reported to
+                edges.forEach(function(edge) {
+                        [edge.source, edge.target].forEach(function(value) {
+                                if (podIPs.indexOf(value) == -1){
+                                        nodes.push({
+                                                "label": value,
+                                                "id": value,
+                                                "x": 0,
+                                                "y": 0,
+                                                _data: {},
+                                        });
+                                        podIPs.push(value);
+                                }
+                        })
+                })
+                console.log(nodes);
+
+                if ('dnsResults' in data) {
+                    var yoffset = 0;
+                    for (let checkedHost in data.dnsResults) {
+                        let value = data.dnsResults[checkedHost];
+                        var allOk = true;
+                        for (let pod in value) {
+                            var podData = value[pod];
+                            var elapsed = 0;
+                            if ('response-time-ms' in podData) {
+                                elapsed = podData['response-time-ms'];
+                            }
+                            var podOk = (!('error' in podData));
+                            allOk = allOk && podOk
+                            edges.push({
+                                source: pod,
+                                target: checkedHost,
+                                _data: {
+                                    "OK": podOk,
+                                    "elapsed": elapsed,
+                                    "isDNSCheckNode": true,
+                                }
+                            });
+                        }
+                        value["OK"] = allOk
+                        dnsCheckNodes.push({
+                            "label": checkedHost,
+                            "id": checkedHost,
+                            "x": 0,
+                            "y": 0,
+                            _data: value,
+                        });
+                    }
+                }

                // build the actual graph
                s = new sigma({
@@ -244,6 +346,19 @@ var main = function(timeout){
                        s.graph.addNode(node);
                });

+                // generate any dns nodes on the graph
+                dnsCheckNodes.forEach(function(node, i, a){
+                        node.x = 2;
+                        node.y = (0.6 * i / a.length) - 0.8;
+                        node.size = 10;
+                        node.color = "#4CC40B";
+                        if (!node._data.OK) {
+                                node.color = "red";
+                        }
+                        //console.log(node);
+                        s.graph.addNode(node);
+                });
+
                // generate the edges
                edges.forEach(function(edge, i){
                        var color = "#ccc";
@@ -255,6 +370,9 @@ var main = function(timeout){
                        if (!edge._data.OK) {
                                color = "red";
                        }
+                        if ("isDNSCheckNode" in edge._data) {
+                                type = "dashed";
+                        }
                        var edge = {
                                id: "e" + i,
                                source: edge.source,
@@ -305,7 +423,7 @@ var main = function(timeout){
                        $('#modal-title').html(node.id);
                        $('#modal-body').html(prepareJSON(node._data));

-                        // show the things                
+                        // show the things
                        $('#modal-window-code').modal('show');
                });
                s.bind("clickStage", function (e) {
@@ -321,7 +439,7 @@ var main = function(timeout){
                        $('#modal-title').html(edge.id);
                        $('#modal-body').html(prepareJSON(edge._data));

-                        // show the things                
+                        // show the things
                        $('#modal-window-code').modal('show');
                });
        })
@@ -337,18 +455,31 @@ main();

 $("#show-data").click(function (e) {
        // fill the voids
-        $('#modal-title').html("/check_all");
+        $('#modal-title').html("check_all");
        $('#modal-body').html(prepareJSON(global_data));

-        // show the things                
+        // show the things
        $('#modal-window-code').modal('show');
 });
 $("#reload-graph").click(function (e) {
        s.kill();
        main();
 });
+$("#show-heatmap").click(function (e) {
+        updateHeatmap();
+        $('#modal-window-heatmap').modal('show');
+});
+var updateHeatmap = function(){
+        $('#heatmap-body').html(
+                '<img src="' + getHeatmapUrl() + '" />'
+        );
+}
+$("#update-heatmap").click(function (e) {
+        updateHeatmap();
+});
 </script>
 </body>
 </html>


+
--- a/swagger.yml
+++ b/swagger.yml
@@ -1,7 +1,7 @@
 ---
 swagger: '2.0'
 info:
-  version: 1.0.0
+  version: 2.0.0
  title: Goldpinger 
 definitions:
  CallStats:
@@ -12,6 +12,17 @@ definitions:
        type: integer
      ping:
        type: integer
+  DnsResult:
+    properties:
+      response-time-ms:
+        type: number
+        format: int64
+      error:
+        type: string
+  DnsResults:
+    type: object
+    additionalProperties:
+      $ref: '#/definitions/DnsResult'
  PingResults:
    type: object
    properties:
@@ -42,8 +53,13 @@ definitions:
        description: wall clock time in milliseconds
  CheckResults:
    type: object
-    additionalProperties:
-      $ref: '#/definitions/PodResult'
+    properties:
+      dnsResults:
+        $ref: '#/definitions/DnsResults'
+      podResults:
+        type: object
+        additionalProperties:
+          $ref: '#/definitions/PodResult'
  CheckAllPodResult:
    type: object
    properties:
@@ -83,6 +99,10 @@ definitions:
            podIP:
              type: string
              format: ipv4
+      dnsResults:
+        type: object
+        additionalProperties:
+          $ref: '#/definitions/DnsResults'
      responses:
        type: object
        additionalProperties:
Author	SHA1	Message	Date
Mikolaj Pawlikowski	c66050e536	Merge pull request #78 from skamboj/migrate-to-go-modules Migrate to go modules	2020-04-02 20:40:46 +01:00
Mikolaj Pawlikowski	34d84b233c	Merge branch 'master' into migrate-to-go-modules	2020-04-02 17:56:00 +01:00
Mikolaj Pawlikowski	e07ae6a64c	Merge pull request #75 from ifooth/master fix prometheus ruler expr	2020-04-02 17:55:47 +01:00
Mikolaj Pawlikowski	6844a8d2b4	Merge branch 'master' into master	2020-04-02 17:36:43 +01:00
Sachin Kamboj	c23112de50	Update the CI Signed-off-by: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 21:06:01 -04:00
Sachin Kamboj	436c1a7243	Update the README to remove references to dep Signed-off-by: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 21:00:31 -04:00
Sachin Kamboj	66c8dc0cce	Update the version/tag to be compatible with what go expects Signed-off-by: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 20:53:45 -04:00
Sachin Kamboj	8a7e5a36ba	Update the multistage build to use go 1.14 and go modules; Remove dep Signed-off-by: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 20:26:03 -04:00
Sachin Kamboj	4e508cb8c8	Update the vendoring Signed-off-by: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 20:17:37 -04:00
Sachin Kamboj	536a7ffbbb	Remove the dep files Signed-Off-By: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 20:16:47 -04:00
Sachin Kamboj	bf25a51c3e	Add a go.mod and go.sum Signed-Off-By: Sachin Kamboj <skamboj1@bloomberg.net>	2020-04-01 19:48:15 -04:00
Mikolaj Pawlikowski	02b38e3ab7	Merge pull request #77 from sandeepmendiratta/sandeep-heatmap_fix minor typo correction in heat map page. Also updated version and Read…	2020-03-22 21:36:49 +00:00
Sandeep Mendiratta	0870833cf5	minor typo correction in heat map page. Also updated version and Readme with new version Signed-off-by: Sandeep Mendiratta <smendiratta@yahoo.com>	2020-03-22 16:28:22 -05:00
Mikolaj Pawlikowski	d5400d6e2e	Merge pull request #76 from seeker89/fix-empty-ips Fix a Goldpinger reporting healthy when kubernetes returns an empty IP field	2020-03-11 14:21:05 +00:00
Mikolaj Pawlikowski	94d4a7c81e	Use HostIP as podIP, if the there is no podIP Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:25:12 +00:00
Mikolaj Pawlikowski	94dc18c9c2	Update the version in README Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	8964cab729	Bump patch version Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	d297e2f3c6	Change CheckAllPods to return an error when can't create a server Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	02067f03ab	Change PingAllPods to send an error if the client can't be created Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	b96cab34ea	Change the client builder to fail, if the IP provided is empty, instead of defaulting to localhost Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	bc7afb7a17	Return response time on failure to ping Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Mikolaj Pawlikowski	89a6c76c9c	Formatting Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2020-03-11 13:05:22 +00:00
Joe Lei	60436daf18	fix prometheus ruler expr Signed-off-by: Joe Lei <thezero12@hotmail.com>	2020-02-18 10:59:43 +08:00
Mikolaj Pawlikowski	618369f540	Merge pull request #71 from SuleimanWA/master prometheus service auto-discovery	2019-11-26 20:13:58 +00:00
suleimanWA	1ab777c3d5	Merge branch 'master' of github.com:SuleimanWA/goldpinger move scrap annotation from service to pod level Signed-off-by: suleimanWA <suleiman-94@hotmail.com>	2019-11-26 20:52:46 +02:00
suleiman abualrob	6315c71a2c	Update README.md Kubernetes master node by most of default installation are taint, so goldPinger DaemonSet will not deployed to master, in order to make it run on master nodes also, you have to tolerate the taint Signed-off-by: suleimanWA <suleiman-94@hotmail.com>	2019-11-26 20:42:27 +02:00
suleiman abualrob	49a47284b6	Update README.md Kubernetes master node by most of default installation are taint, so goldPinger DaemonSet will not deployed to master, in order to make it run on master nodes also, you have to tolerate the taint Signed-off-by: suleimanWA <suleiman-94@hotmail.com>	2019-11-26 20:38:52 +02:00
suleiman abualrob	ec2155878a	Update README.md If you have Prometheus in your environment, adding these annotation will let Prometheus auto-discovery fetch your metrics automatically from service-name:port/metrics Signed-off-by: suleimanWA <suleiman-94@hotmail.com>	2019-11-26 19:03:14 +02:00
Mikolaj Pawlikowski	cab268b725	Merge pull request #70 from angelbarrera92/secure-k8s-deployment Secure k8s deployment	2019-11-14 16:53:06 +00:00
Ángel Barrera Sánchez	e552b236a0	Change documentation example Signed-off-by: Ángel Barrera Sánchez <angel@sighup.io>	2019-11-14 17:19:42 +01:00
Ángel Barrera Sánchez	8a86a74478	Change dashboard's datasource parameter to be variable Signed-off-by: Ángel Barrera Sánchez <angel@sighup.io>	2019-11-14 17:19:42 +01:00
Ángel Barrera Sánchez	4dab241ff6	Change daemonset definition to be more secure Signed-off-by: Ángel Barrera Sánchez <angel@sighup.io>	2019-11-14 17:19:42 +01:00
Mikolaj Pawlikowski	f99ba84d17	Merge pull request #64 from seeker89/bump-major-version Add info on how to use the DNS features	2019-09-06 15:10:44 +01:00
Mikolaj Pawlikowski	75315a872a	Better wording in the README Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-09-06 14:58:10 +01:00
Mikolaj Pawlikowski	ae67cf3594	Add a note about the DNS addresses being space-delimited Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-09-06 14:57:08 +01:00
Mikolaj Pawlikowski	433a6b8b88	Add a note about the DNS usage Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-09-06 14:51:22 +01:00
Mikolaj Pawlikowski	0660db7922	Bump up major version to 2.0.0 Since this is effectively a backwards incompatible change Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-09-06 14:42:36 +01:00
Mikolaj Pawlikowski	58285945f6	Merge pull request #61 from cgreen12/master Optionally test DNS resolution for each pod	2019-09-06 12:23:36 +01:00
Mikolaj Pawlikowski	8a014ad7f4	Merge branch 'master' into master	2019-09-05 13:58:20 +01:00
Mikolaj Pawlikowski	096b149afa	Merge pull request #63 from ufou/all_relative_paths make all paths relative to allow for hosting at a sub path of root	2019-09-05 13:56:58 +01:00
Luke Alexander	5840353d9f	bump patch version accordingly Signed-off-by: Luke Alexander <luke.alexander@mixcloud.com>	2019-09-05 11:39:50 +01:00
Luke Alexander	ac9bf4224d	make all paths relative to allow for hosting at a sub path of root Signed-off-by: Luke Alexander <luke.alexander@mixcloud.com>	2019-09-05 11:10:23 +01:00
Chris Green	bcbc2ac6fc	:trollface: re-ran swagger Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-08-21 04:53:01 -04:00
Chris Green	192fc433a2	Added metric for DNS failures Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-07-04 03:06:29 -04:00
Chris Green	dc3864f170	Colour the dns nodes red for any failures Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-09 09:11:49 -04:00
Chris Green	8a759433eb	Show the info for dns nodes Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-09 08:53:52 -04:00
Chris Green	1b12b7dc6b	Version bump Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-09 08:44:49 -04:00
Chris Green	9adf26e2cb	Consistency ftw Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-09 08:43:47 -04:00
Chris Green	927125bbc5	slight re-positioning Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-09 07:37:48 -04:00
Chris Green	7585d010a6	Initial UI changes Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-05 14:56:37 -04:00
Chris Green	5e0ecdd8d1	Updates from swagger change Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-05 14:30:53 -04:00
Chris Green	d834433d30	Moved dns check into client Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-05 14:30:11 -04:00
Chris Green	b64f5152f2	Moved DnsResults into CheckResults Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-05 14:28:40 -04:00
Chris Green	bbac97c17e	Refactored swagger.yml for fewer dns requests Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-04 02:54:23 -04:00
Chris Green	74ffcc8d2e	Do the dns lookup Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-02 13:18:40 -04:00
Chris Green	9586e16237	Updated models from swagger Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-02 13:18:05 -04:00
Chris Green	6541250aa9	Updated swagger.yml for map of dnsresults Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-02 11:54:20 -04:00
Chris Green	31a503d831	Added env-delim for envvar config Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-02 11:18:25 -04:00
Chris Green	195691518b	Added DnsHosts to config Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-01 15:18:26 -04:00
Chris Green	aa66c94d47	Initial thoughts on swagger change Signed-off-by: Chris Green <34572557+cgreen12@users.noreply.github.com>	2019-06-01 11:41:01 -04:00
Mikolaj Pawlikowski	7b2affea29	Merge pull request #59 from kpfleming/travis-deploy-one-version Ensure that only Golang 1.10 builds are pushed to DockerHub	2019-03-22 15:27:12 +00:00
Kevin P. Fleming	d1a86eae93	Ensure that only Golang 1.10 builds are pushed to DockerHub Signed-off-by: Kevin P. Fleming <kpfleming@bloomberg.net>	2019-03-21 16:16:22 -04:00
Mikolaj Pawlikowski	a2e5925210	Merge pull request #58 from dannyk81/healthz_readme Update readme and example with liveness and readiness probes	2019-03-18 09:56:04 +00:00
Danny Kulchinsky	d243f0fb59	update example Signed-off-by: Danny Kulchinsky <danny.kul@gmail.com> Signed-off-by: Danny Kulchinsky <dannyk@tuenti.com>	2019-03-17 21:01:15 -04:00
Danny Kulchinsky	477ba69a72	Add livenessProbe and readinessProbe to README Signed-off-by: Danny Kulchinsky <danny.kul@gmail.com> Signed-off-by: Danny Kulchinsky <dannyk@tuenti.com>	2019-03-17 21:01:15 -04:00
Mikolaj Pawlikowski	86064f208e	Merge pull request #53 from stuartnelson3/stn/rendezvous-hashing Add rendezvous hash for selecting subset of nodes	2019-03-14 12:24:33 +00:00
Mikolaj Pawlikowski	d8f8c20927	make the graph work with edges to nodes that are not reporting Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-14 08:13:44 -04:00
Mikolaj Pawlikowski	7c43626b1e	Minor version bump to 1.5.0 Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-14 11:28:32 +00:00
Mikolaj Pawlikowski	11ec058b3b	Add PING_NUMBER envvar support Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-14 11:27:49 +00:00
Mikolaj Pawlikowski	c006eede86	Merge branch 'master' into stn/rendezvous-hashing	2019-03-13 17:11:23 +00:00
Mikolaj Pawlikowski	a585b103f3	Merge pull request #56 from seeker89/docker-push-updates Updates for the docker images being pushed to docker.io	2019-03-13 17:09:50 +00:00
Mikolaj Pawlikowski	32823fd105	remove the ls and pwd artifacts Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:58:42 +00:00
Mikolaj Pawlikowski	87792cffca	turns out vendor folder I tried to copy was in gitignore and Travis won't pick it up Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:52:23 +00:00
Mikolaj Pawlikowski	369e9ece78	add slashes for the folders to copy Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:47:48 +00:00
Mikolaj Pawlikowski	28af41e352	Revert "debugging Travis - see if the ARG makes a difference" This reverts commit `52ea5546aa`. Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:47:08 +00:00
Mikolaj Pawlikowski	52ea5546aa	debugging Travis - see if the ARG makes a difference Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:41:12 +00:00
Mikolaj Pawlikowski	9040b69933	debug the make vendor-build target Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:23:17 +00:00
Mikolaj Pawlikowski	3ce0c46f91	consistenly use COPY over ADD Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 16:15:13 +00:00
Mikolaj Pawlikowski	7b156add72	Revert "fix the path to copy vendor folder from" This reverts commit `8b1dd49506`. Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 15:53:37 +00:00
Mikolaj Pawlikowski	8b1dd49506	fix the path to copy vendor folder from Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 15:46:22 +00:00
Mikolaj Pawlikowski	bd13d4d673	simplify the vendor building, make it build it with every Travis run Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 14:43:09 +00:00
stuart nelson	895af850a1	Make PodSelecter a member on config struct Signed-off-by: stuart nelson <stuartnelson3@gmail.com>	2019-03-13 15:30:18 +01:00
stuart nelson	771f303062	Add rendezvous hash for selecting subset of nodes Select a user-defined number of pods via rendezvous hash. This is important for larger clusters, where the metric cardinality explosion is too much for a single prometheus to handle. Signed-off-by: stuart nelson <stuartnelson3@gmail.com>	2019-03-13 15:30:18 +01:00
Mikolaj Pawlikowski	b7c1d2dfb4	add extra info in README, about the `-vendor` image tag Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 14:29:54 +00:00
Mikolaj Pawlikowski	86ddcf9505	push an additional image with -vendor postfix with all the sources For licensing reasons. Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 14:26:28 +00:00
Mikolaj Pawlikowski	bf43dcff98	remove the vendor from the standard build Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 14:13:17 +00:00
Mikolaj Pawlikowski	6de72deee0	When building multi-stage, copy over the vendor folder for licensing reasons Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-13 13:59:43 +00:00
Mikolaj Pawlikowski	6cd12ef2d5	Update example-with-kubeconfig.yaml Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-12 23:07:54 +00:00
Mikolaj Pawlikowski	8182369c02	Update example-serviceaccounts.yml Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-12 23:07:29 +00:00
Mikolaj Pawlikowski	82a0d6ae8c	Merge branch 'master' into docker-push-updates	2019-03-12 23:05:32 +00:00
Mikolaj Pawlikowski	057e360c5b	Update README.md Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-03-12 22:59:32 +00:00
Mikolaj Pawlikowski	4cf5dea621	Merge pull request #55 from kpfleming/travis-to-dockerhub Enable push of images to DockerHub	2019-03-12 22:35:50 +00:00
Kevin P. Fleming	16a1d52741	Deployment improvements * Only deploy from tags * Only attempt deployment if DOCKER_PASSWORD has been set in environment * Don't cleanup working directory before deployment Signed-off-by: Kevin P. Fleming <kpfleming@bloomberg.net>	2019-03-12 09:15:22 -04:00
Kevin P. Fleming	0472791dae	Use a 'deploy' stage and script Pushing to DockerHub from the 'after_success' phase was unreliable (triggered by PRs) so this patch changes the process to use a 'deploy' stage script instead. Signed-off-by: Kevin P. Fleming <kpfleming@bloomberg.net>	2019-03-11 16:28:16 -04:00
Kevin P. Fleming	84a43a3d28	Enable push of images to DockerHub This patch will enable pushes of any successful builds (using Travis-CI) of the 'master' branch to the proper repository on DockerHub. The credentials necessary are provided via environment variables configured in the Travis-CI settings. Addresses issue #27 Signed-off-by: Kevin P. Fleming <kpfleming@bloomberg.net>	2019-03-11 15:29:58 -04:00
Mikolaj Pawlikowski	3f70a24804	Merge pull request #51 from seeker89/heatmap Add heatmap	2019-03-05 17:48:00 +00:00
Mikolaj Pawlikowski	593307dc01	change the block size to 14 pixels (enough for two digits, so 100 machines cluster) Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-22 17:32:22 +00:00
Mikolaj Pawlikowski	950e2e4ab7	dep ensure Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 18:36:25 +00:00
Mikolaj Pawlikowski	d8f0d696ea	add a basic legend to the heatmap image Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 18:34:30 +00:00
Mikolaj Pawlikowski	6deb5c3044	fix static folder when using Dockerfile-simple Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 17:43:54 +00:00
Mikolaj Pawlikowski	767d2dba7f	quick test of how to integrate with the UI Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 17:41:19 +00:00
Mikolaj Pawlikowski	2efee0f5e5	read the tresholds from the query params Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 17:40:06 +00:00
Mikolaj Pawlikowski	3a729bf196	minor version bump Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 16:14:48 +00:00
Mikolaj Pawlikowski	fd84599157	remove debug print statements Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 16:13:20 +00:00
Mikolaj Pawlikowski	f5c2763000	add an endpoint for generating a /heatmap.png Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 13:51:20 +00:00
Mikolaj Pawlikowski	22b96d001d	add a skeleton for creating a heatmap png Signed-off-by: Mikolaj Pawlikowski <mikolaj@pawlikowski.pl>	2019-02-21 13:50:59 +00:00