feat: add helm chart

Signed-off-by: Derek Brown <derektbrown@users.noreply.github.com>

.github/workflows/helm-publish.yaml

@@ -0,0 +1,24 @@
+name: Helm Publish
+on:
+  push:
+    branches:
+      - master 
+jobs:
+  helm_publish:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0  
+          
+      - name: Configure Git
+        run: |
+          git config user.name "$GITHUB_ACTOR"
+          git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
+
+      - name: Run chart-releaser
+        uses: helm/chart-releaser-action@v1.6.0
+        with:
+          charts_dir: helm
+          token: "${{ secrets.GITHUB_TOKEN }}"

.github/workflows/helm-test.yaml

@@ -0,0 +1,74 @@
+name: Helm Test
+on:
+  pull_request:  
+jobs:
+  helm_test:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout Code
+      uses: actions/checkout@v2
+
+    - name: Install Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.16
+
+    - name: Install Tools
+      shell: bash
+      id: tool-versions
+      env:
+        TILT_TOOL_CTLPTL_VERSION: "0.8.21"
+        TILT_TOOL_KIND_VERSION: "0.20.0" 
+        TILT_TOOL_KUBECTL_VERSION: "1.27.3"
+        TILT_TOOL_HELM_VERSION: "3.12.2"
+        TILT_TOOL_TILT_VERSION: "0.33.3"
+      run: |
+
+        # Create Tools Directory
+        TOOLS_DIR=/opt/helm_tools
+        mkdir -p "${TOOLS_DIR}"
+        
+        # Download ctlptl
+        echo "Downloading ctlptl"
+        curl -fsSL https://github.com/tilt-dev/ctlptl/releases/download/v${TILT_TOOL_CTLPTL_VERSION}/ctlptl.${TILT_TOOL_CTLPTL_VERSION}.linux.x86_64.tar.gz | sudo tar -xzv -C "${TOOLS_DIR}" ctlptl
+
+        # Download kind
+        echo "Downloading kind"
+        curl -fsSL https://kind.sigs.k8s.io/dl/v${TILT_TOOL_KIND_VERSION}/kind-linux-amd64 -o "${TOOLS_DIR}/kind"
+
+        # Download kubectl
+        echo "Downloading kubectl"
+        curl -fsSL https://dl.k8s.io/release/v${TILT_TOOL_KUBECTL_VERSION}/bin/linux/amd64/kubectl -o "${TOOLS_DIR}/kubectl"
+
+        # Download helm
+        echo "Downloading helm"
+        curl -fsSL https://get.helm.sh/helm-v${TILT_TOOL_HELM_VERSION}-linux-amd64.tar.gz | tar -xzv -C "${TOOLS_DIR}" --strip-components=1 linux-amd64/helm
+
+        # Download tilt
+        echo "Downloading tilt"
+        curl -fsSL https://github.com/tilt-dev/tilt/releases/download/v${TILT_TOOL_TILT_VERSION}/tilt.${TILT_TOOL_TILT_VERSION}.linux.x86_64.tar.gz | tar -xzv -C "${TOOLS_DIR}" tilt
+
+        # Make the binaries runnable
+        echo "Making binaries executable"
+        sudo chmod -R +x "${TOOLS_DIR}"
+
+        # Add tools to path
+        echo "PATH=${PATH}:${TOOLS_DIR}" >> $GITHUB_ENV
+
+    - name: Start Kind Cluster
+      shell: bash
+      run: |
+        ctlptl apply -f kind.yaml
+
+    - name: Run Tilt Tests
+      shell: bash
+      run: |
+        tilt ci --debug --output-snapshot-on-exit=/tmp/tilt-snapshot.json
+
+    - name: Upload Tilt Snapshot
+      if: success() || failure()
+      uses: actions/upload-artifact@v3
+      with:
+        name: tilt-snapshot
+        path: |
+          /tmp/tilt-snapshot.json

README.md

@@ -101,14 +101,25 @@ docker push $(namespace="docker.io/myhandle/" make version)
 ```
 
 ## Installation
-
 `Goldpinger` works by asking `Kubernetes` for pods with particular labels (`app=goldpinger`). While you can deploy `Goldpinger` in a variety of ways, it works very nicely as a `DaemonSet` out of the box.
 
-### Authentication with Kubernetes API
+### Helm Installation
+Goldpinger can be installed via [Helm](https://helm.sh/) using the following:
+
+```
+helm repo add goldpinger https://bloomberg.github.io/goldpinger
+helm repo update
+helm install goldpinger goldpinger/goldpinger
+```
+
+### Manual Installation
+`Goldpinger` can be installed manually via configuration similar to the following:
+
+#### Authentication with Kubernetes API
 
 `Goldpinger` supports using a `kubeconfig` (specify with `--kubeconfig-path`) or service accounts.
 
-### Example YAML
+#### Example YAML
 
 Here's an example of what you can do (using the in-cluster authentication to `Kubernetes` apiserver).
 

Tiltfile

@@ -0,0 +1,30 @@
+# -*- mode: bazel-starlark -*-
+
+# Build the image
+docker_build('goldpinger-local', '.')
+
+# Deploy with Helm
+k8s_yaml(
+  helm(
+    'charts/goldpinger',
+    set = [
+      # Set the image to the one built by Tilt
+      'image.repository=goldpinger-local',
+    ],
+  )
+)
+
+# Track Goldpinger Resource
+k8s_resource(
+  'chart-goldpinger',
+  port_forwards = [8080],
+)
+
+# Validate that all 2 nodes can talk to eachother
+local_resource(
+  'check_reachability',
+  cmd='./extras/check_reachability.sh 2',
+  resource_deps = [
+    'chart-goldpinger',
+  ],
+)

charts/goldpinger/.helmignore

@@ -0,0 +1,23 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+
+OWNERS

charts/goldpinger/Chart.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+name: goldpinger
+appVersion: "v3.7.0"
+version: 1.0.0
+description: Goldpinger is a tool to help debug, troublshoot and visualize network connectivity and slowness issues.
+home: https://github.com/bloomberg/goldpinger
+sources:
+  - https://github.com/bloomberg/goldpinger

charts/goldpinger/templates/_helpers.tpl

@@ -0,0 +1,62 @@
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "goldpinger.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "goldpinger.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "goldpinger.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "goldpinger.labels" -}}
+helm.sh/chart: {{ include "goldpinger.chart" . }}
+{{ include "goldpinger.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "goldpinger.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "goldpinger.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "goldpinger.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "goldpinger.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/goldpinger/templates/clusterrole.yaml

@@ -0,0 +1,12 @@
+{{- if and .Values.rbac.create .Values.rbac.clusterscoped }}
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-clusterrole
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+rules:
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["list"]
+{{- end }}

charts/goldpinger/templates/clusterrolebinding.yaml

@@ -0,0 +1,16 @@
+{{- if and .Values.rbac.create .Values.rbac.clusterscoped }}
+kind: ClusterRoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-clusterrolebinding
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "goldpinger.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+roleRef:
+  kind: ClusterRole
+  name: {{ include "goldpinger.fullname" . }}-clusterrole
+  apiGroup: rbac.authorization.k8s.io
+{{- end }}

charts/goldpinger/templates/configmap.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-zap
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+data:
+  zap.json: {{ .Values.goldpinger.zapConfig | toJson }}

charts/goldpinger/templates/daemonset.yaml

@@ -0,0 +1,103 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+spec:
+  {{- with .Values.updateStrategy }}
+  updateStrategy:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "goldpinger.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      {{- with .Values.podAnnotations }}
+      annotations:
+        {{ toYaml . | nindent 8 }}
+      {{- end }}
+      labels:
+        {{- include "goldpinger.selectorLabels" . | nindent 8 }}
+      {{- with .Values.podLabels }}
+        {{ toYaml . | nindent 8 }}
+      {{- end }}
+    spec:
+      priorityClassName: {{ .Values.priorityClassName }}
+      serviceAccountName: {{ include "goldpinger.serviceAccountName" . }}
+      {{- if .Values.image.pullSecrets }}
+      imagePullSecrets:
+        {{- range .Values.image.pullSecrets }}
+        - name: {{ . }}
+        {{- end }}
+      {{- end }}
+      containers:
+        - name: goldpinger-daemon
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          volumeMounts:
+            - name: zap
+              mountPath: /config
+          env:
+            - name: HOSTNAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: spec.nodeName
+            - name: HOST
+              value: "0.0.0.0"
+            - name: PORT
+              value: "{{ .Values.goldpinger.port }}"
+            - name: LABEL_SELECTOR
+              value: "app.kubernetes.io/name={{ include "goldpinger.name" . }}"
+            {{- if .Values.extraEnv -}}
+            {{ toYaml .Values.extraEnv | nindent 12 }}
+            {{- end }}
+          {{- with .Values.containerSecurityContext }}
+          securityContext:
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.goldpinger.port }}
+              protocol: TCP
+              {{- range $k := .Values.extraEnv }}
+              {{- if and (eq $k.name "USE_HOST_IP") (eq $k.value "true") }}
+              hostPort: {{ $.Values.goldpinger.port }}
+              {{- end }}
+              {{- end }}
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      volumes:
+        - name: zap
+          configMap:
+            name: {{ include "goldpinger.fullname" . }}-zap
+      {{- range $k := .Values.extraEnv }}
+      {{- if and (eq $k.name "USE_HOST_IP") (eq $k.value "true") }}
+      hostNetwork: true
+      {{- end }}
+      {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.podSecurityContext }}
+      securityContext:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/goldpinger/templates/ingress.yaml

@@ -0,0 +1,61 @@
+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "goldpinger.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- if and .Values.ingress.className (not (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion)) }}
+  {{- if not (hasKey .Values.ingress.annotations "kubernetes.io/ingress.class") }}
+  {{- $_ := set .Values.ingress.annotations "kubernetes.io/ingress.class" .Values.ingress.className}}
+  {{- end }}
+{{- end }}
+{{- if semverCompare ">=1.19-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1
+{{- else if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
+apiVersion: networking.k8s.io/v1beta1
+{{- else -}}
+apiVersion: extensions/v1beta1
+{{- end }}
+kind: Ingress
+metadata:
+  name: {{ $fullName }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if and .Values.ingress.className (semverCompare ">=1.18-0" .Capabilities.KubeVersion.GitVersion) }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            {{- if and .pathType (semverCompare ">=1.18-0" $.Capabilities.KubeVersion.GitVersion) }}
+            pathType: {{ .pathType }}
+            {{- end }}
+            backend:
+              {{- if semverCompare ">=1.19-0" $.Capabilities.KubeVersion.GitVersion }}
+              service:
+                name: {{ $fullName }}
+                port:
+                  number: {{ $svcPort }}
+              {{- else }}
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+              {{- end }}
+          {{- end }}
+    {{- end }}
+{{- end }}

charts/goldpinger/templates/prometheusrule.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.prometheusRule.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: {{ template "goldpinger.fullname" . }}
+  {{- if .Values.prometheusRule.namespace }}
+  namespace: {{ .Values.prometheusRule.namespace }}
+  {{- else }}
+  namespace: {{ .Release.Namespace | quote }}
+  {{- end }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+spec:
+  {{- with .Values.prometheusRule.rules }}
+  groups:
+    - name: {{ template "goldpinger.name" $ }}
+      rules: {{- tpl (toYaml .) $ | nindent 8 }}
+  {{- end }}
+{{- end }}

charts/goldpinger/templates/role.yaml

@@ -0,0 +1,20 @@
+{{- if or .Values.podSecurityPolicy.enabled (not .Values.rbac.clusterscoped) }}
+kind: Role
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+rules:
+{{- if not .Values.rbac.clusterscoped }}
+  - apiGroups: [""]
+    resources: ["pods"]
+    verbs: ["list"]
+{{- end }}
+{{- if .Values.podSecurityPolicy.enabled }}
+  - apiGroups: ["extensions"]
+    resources: ["podsecuritypolicies"]
+    resourceNames: [{{ .Values.podSecurityPolicy.policyName | quote }}]
+    verbs: ["use"]
+{{- end }}
+{{- end }}

charts/goldpinger/templates/rolebinding.yaml

@@ -0,0 +1,16 @@
+{{- if or .Values.podSecurityPolicy.enabled (not .Values.rbac.clusterscoped) }}
+kind: RoleBinding
+apiVersion: rbac.authorization.k8s.io/v1
+metadata:
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+roleRef:
+  kind: Role
+  name: {{ include "goldpinger.fullname" . }}-pod-security-policy
+  apiGroup: rbac.authorization.k8s.io
+subjects:
+  - kind: ServiceAccount
+    name: {{ include "goldpinger.serviceAccountName" . }}
+    namespace: {{ .Release.Namespace }}
+{{- end }}

charts/goldpinger/templates/service.yaml

@@ -0,0 +1,26 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+{{- with .Values.service.labels }}
+{{ toYaml . | indent 4 }}
+{{- end }}
+{{- with .Values.service.annotations }}
+  annotations:
+{{ toYaml . | indent 4 }}
+{{- end }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: {{ .Values.goldpinger.port }}
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "goldpinger.selectorLabels" . | nindent 4 }}
+  {{- if .Values.service.loadBalancerSourceRanges }}
+  loadBalancerSourceRanges:
+    {{- toYaml .Values.service.loadBalancerSourceRanges | nindent 4 }}
+  {{- end }}

charts/goldpinger/templates/serviceaccount.yaml

@@ -0,0 +1,8 @@
+{{- if .Values.serviceAccount.create }}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "goldpinger.serviceAccountName" . }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+{{- end }}

charts/goldpinger/templates/servicemonitor.yaml

@@ -0,0 +1,28 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ include "goldpinger.fullname" . }}
+  {{- if .Values.serviceMonitor.namespace }}
+  namespace: {{ .Values.serviceMonitor.namespace }}
+  {{- end }}
+  labels:
+    {{- include "goldpinger.labels" . | nindent 4 }}
+    {{- range $key, $value := .Values.serviceMonitor.selector }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+spec:
+  endpoints:
+    - port: http
+      interval: {{ .Values.serviceMonitor.interval }}
+      {{- if .Values.serviceMonitor.honorLabels }}
+      honorLabels: true
+      {{- end }}
+  jobLabel: name
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      {{- include "goldpinger.selectorLabels" . | nindent 6 }}
+{{- end -}}

charts/goldpinger/values.yaml

@@ -0,0 +1,159 @@
+# Default values for goldpinger.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+image:
+  repository: bloomberg/goldpinger
+  # Overrides the image tag whose default is the chart appVersion.
+  tag: ""
+  pullPolicy: IfNotPresent
+  ## Optionally specify an array of imagePullSecrets.
+  ## Secrets must be manually created in the namespace.
+  ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+  ##
+  # pullSecrets:
+  #   - myRegistryKeySecretName
+
+rbac:
+  create: true
+  clusterscoped: true
+
+serviceAccount:
+  create: true
+  name:
+
+goldpinger:
+  port: 8080
+  zapConfig: |
+    {
+      "level": "info",
+      "encoding": "json",
+      "outputPaths": [
+          "stdout"
+      ],
+      "errorOutputPaths": [
+          "stderr"
+      ],
+      "initialFields": {
+      },
+      "encoderConfig": {
+          "messageKey": "message",
+          "levelKey": "level",
+          "levelEncoder": "lowercase",
+          "timeKey": "ts",
+          "timeEncoder": "ISO8601",
+          "callerKey": "caller",
+          "callerEncoder": "Short"
+      }
+    }
+
+extraEnv: []
+
+service:
+  type: ClusterIP
+  port: 8081
+  annotations: {}
+  labels: {}
+  loadBalancerSourceRanges: {}
+
+ingress:
+  enabled: false
+  className: ""
+  annotations: {}
+    # kubernetes.io/ingress.class: nginx
+    # kubernetes.io/tls-acme: "true"
+  hosts:
+    - host: chart-example.local
+      paths:
+        - path: /
+          pathType: ImplementationSpecific
+  tls: []
+  #  - secretName: chart-example-tls
+  #    hosts:
+  #      - chart-example.local
+
+## Set a priorityClassName for the pod. If left blank a default priority will be set.
+priorityClassName:
+
+resources: {}
+  # We usually recommend not to specify default resources and to leave this as a conscious
+  # choice for the user. This also increases chances charts run on environments with little
+  # resources, such as Minikube. If you do want to specify resources, uncomment the following
+  # lines, adjust them as necessary, and remove the curly braces after 'resources:'.
+  # limits:
+  #  cpu: 100m
+  #  memory: 128Mi
+  # requests:
+  #  cpu: 100m
+  #  memory: 128Mi
+
+podAnnotations: {}
+
+podLabels: {}
+
+updateStrategy: {}
+  # type: RollingUpdate
+  # rollingUpdate:
+  #   maxUnavailable: 1
+
+## Node labels for pod assignment
+## Ref: https://kubernetes.io/docs/user-guide/node-selection/
+##
+nodeSelector: {}
+
+## Tolerations for pod assignment
+## Ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+##
+tolerations: []
+
+## Affinity for pod assignment
+## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#affinity-and-anti-affinity
+##
+affinity: {}
+
+## Enable this if pod security policy enabled in your cluster
+## It will bind ServiceAccount with unrestricted podSecurityPolicy
+## Ref: https://kubernetes.io/docs/concepts/policy/pod-security-policy/
+podSecurityPolicy:
+  enabled: false
+  policyName: unrestricted-psp
+
+## Set security context of the goldpinger container
+## Ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+containerSecurityContext: {}
+#  allowPrivilegeEscalation: false
+#  privileged: false
+#  readOnlyRootFilesystem: true
+
+## Set security context of the pod
+## Ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+podSecurityContext: {}
+#  runAsNonRoot: true
+#  runAsUser: 1001
+#  runAsGroup: 2001
+#  seccompProfile:
+#    type: RuntimeDefault
+
+serviceMonitor:
+  enabled: false
+  selector:
+    prometheus: "kube-prometheus"
+  # namespace: monitoring
+  interval: 30s
+  # honorLabels: true
+
+## Custom PrometheusRule to be defined
+## ref: https://github.com/coreos/prometheus-operator#customresourcedefinitions
+prometheusRule:
+  enabled: false
+  rules:
+    - alert: goldpinger_nodes_unhealthy
+      expr: |
+        sum(goldpinger_nodes_health_total{job="{{ template "goldpinger.fullname" . }}", status="unhealthy"})
+        BY (instance, goldpinger_instance) > 0
+      for: 5m
+      annotations:
+        description: |
+          Goldpinger instance {{ "{{ $labels.goldpinger_instance }}" }} has been reporting unhealthy nodes for at least 5 minutes.
+        summary: Instance {{ "{{ $labels.instance }}" }} down
+      labels:
+        severity: warning

extras/check_reachability.sh

@@ -0,0 +1,84 @@
+#!/bin/bash
+
+# This is a simple script, used in the Tilt GitHub Action
+# to validate that all worker nodes can inter-communicate.
+
+function print_help() {
+  echo "Usage: $0 [EXPECTED_HOST_COUNT]"
+  echo "Arguments:"
+  echo "  EXPECTED_HOST_COUNT: The number of expected hosts in the Goldpinger output."
+  echo "Examples:"
+  echo "  $0 2"
+}
+
+if [ "$#" -ne 1 ]; then
+  echo "Error: Invalid number of arguments."
+  print_help
+  exit 1
+fi
+
+if ! [[ $1 =~ ^[0-9]+$ ]]; then
+  echo "Error: EXPECTED_HOST_COUNT must be a number."
+  print_help
+  exit 1
+fi
+
+expected_host_count=$1
+goldpinger_output=""
+retry_count=0
+host_count=0
+
+while :; do
+  if [ "$retry_count" -ge 20 ]; then
+    echo "Error: Failed to fetch Goldpinger output after 10 attempts."
+    exit 1
+  fi
+  
+  echo "Sleeping for 8s..."
+  let retry_count++
+  sleep 8
+
+  echo "Attempt $((retry_count)) to fetch Goldpinger output."
+  goldpinger_output=$(curl -s http://localhost:8080/check_all)
+  echo "Goldpinger output: $goldpinger_output"
+
+  if [ "$goldpinger_output" == "null" ] || [ -z "$goldpinger_output" ]; then
+    echo "Goldpinger output is null or empty, retrying..."
+    continue
+  fi
+
+  host_count=$(echo "$goldpinger_output" | jq '.hosts | length')
+  if [ "$host_count" -ne "$expected_host_count" ]; then
+    echo "Goldpinger has not identified all hosts, retrying..."
+    continue
+  fi
+
+  for host in $(echo $goldpinger_output | jq -r '.responses | keys[]'); do
+    checksForPod=$(echo "$goldpinger_output" | jq -r --arg host "$host" '.responses[$host].response.podResults | length')
+    if [ "$checksForPod" -ne "$expected_host_count" ]; then
+      echo "Check for $host is not OK, retrying..."
+      continue 2
+    fi
+  done
+
+  break
+done
+
+all_hosts_can_talk=true
+for host in $(echo $goldpinger_output | jq -r '.responses | keys[]'); do
+  for target in $(echo $goldpinger_output | jq -r --arg host $host '.responses[$host].response.podResults | keys[]'); do
+    ok=$(echo $goldpinger_output | jq -r --arg host $host --arg target $target '.responses[$host].response.podResults[$target].OK')
+    if [ "$ok" != "true" ]; then
+      all_hosts_can_talk=false
+      break 2
+    fi
+  done
+done
+
+if [[ $host_count -eq $expected_host_count ]] && [[ $all_hosts_can_talk == "true" ]]; then
+  echo "Validation successful. There are $expected_host_count hosts and they can talk to each other."
+else
+  echo "Validation failed. Expected $expected_host_count hosts but found $host_count, or not all hosts can talk to each other."
+  echo "Goldpinger Output: $goldpinger_output"
+  exit 1
+fi

kind.yaml

@@ -0,0 +1,18 @@
+apiVersion: ctlptl.dev/v1alpha1
+kind: Registry
+name: ctlptl-registry
+port: 20021
+---
+apiVersion: ctlptl.dev/v1alpha1
+kind: Cluster
+product: kind
+registry: ctlptl-registry
+kubernetesVersion: v1.27.3
+kindV1Alpha4Cluster:
+  name: goldpinger-test
+  nodes:
+  - role: control-plane
+  - role: worker
+  - role: worker
+  networking:
+    apiServerPort: 30022