Sample Helm chart

charts/vigil/.helmignore

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+# 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
+*.orig
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

charts/vigil/Chart.yaml

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+apiVersion: v2
+name: vigil
+description: A Helm chart for Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+# Versions are expected to follow Semantic Versioning (https://semver.org/)
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application. Versions are not expected to
+# follow Semantic Versioning. They should reflect the version the application is using.
+appVersion: 1.16.0

charts/vigil/templates/NOTES.txt

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+1. Get the application URL by running these commands:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  {{- range .paths }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}{{ . }}
+  {{- end }}
+{{- end }}
+{{- else if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "vigil.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+  echo http://$NODE_IP:$NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "vigil.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "vigil.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+  echo http://$SERVICE_IP:{{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "vigil.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  echo "Visit http://127.0.0.1:8080 to use your application"
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:80
+{{- end }}

charts/vigil/templates/_helpers.tpl

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+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "vigil.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 "vigil.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 "vigil.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{/*
+Common labels
+*/}}
+{{- define "vigil.labels" -}}
+helm.sh/chart: {{ include "vigil.chart" . }}
+{{ include "vigil.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{/*
+Selector labels
+*/}}
+{{- define "vigil.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "vigil.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "vigil.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "vigil.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}

charts/vigil/templates/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "vigil.fullname" . }}
+  labels:
+    {{- include "vigil.labels" . | nindent 4 }}
+data:
+  vigil.cfg: |
+    [server]
+
+    log_level = "{{ .Values.vigil.log_level }}"
+    inet = "0.0.0.0:8080"
+    workers = 4
+    reporter_token = "{{ .Values.vigil.token }}"
+
+    [assets]
+
+    path = "./res/assets/"
+
+    [branding]
+
+    page_title = "{{ .Values.vigil.page_title }}"
+    page_url = "{{ .Values.vigil.page_url }}"
+    company_name = "{{ .Values.vigil.company_name }}"
+    icon_color = "{{ .Values.vigil.icon_color }}"
+    icon_url = "{{ .Values.vigil.icon_url }}"
+    logo_color = "{{ .Values.vigil.logo_color }}"
+    logo_url = "{{ .Values.vigil.logo_url }}"
+    website_url = "{{ .Values.vigil.website_url }}"
+    support_url = "{{ .Values.vigil.support_url }}"
+    custom_html = "{{ .Values.vigil.customer_html }}"
+
+    [metrics]
+
+    poll_interval = {{ .Values.vigil.poll_interval }}
+    poll_retry = {{ .Values.vigil.poll_retry }}
+    poll_http_status_healthy_above = {{ .Values.vigil.poll_http_status_healthy_above }}
+    poll_http_status_healthy_below = {{ .Values.vigil.poll_http_status_healthy_below }}
+    poll_delay_dead = {{ .Values.vigil.poll_delay_dead }}
+    poll_delay_sick = {{ .Values.vigil.poll_delay_sick }}
+    push_delay_dead = {{ .Values.vigil.push_delay_dead }}
+    push_system_cpu_sick_above = {{ .Values.vigil.push_system_cpu_sick_above }}
+    push_system_ram_sick_above = {{ .Values.vigil.push_system_ram_sick_above }}
+    script_interval = {{ .Values.vigil.script_interval }}
+    local_delay_dead = {{ .Values.vigil.local_delay_dead }}
+
+    [plugins]
+
+    [plugins.rabbitmq]
+
+    api_url = "http://127.0.0.1:15672"
+    auth_username = "rabbitmq-administrator"
+    auth_password = "RABBITMQ_ADMIN_PASSWORD"
+    virtualhost = "crisp"
+
+    queue_ready_healthy_below = 500
+    queue_nack_healthy_below = 100
+    queue_ready_dead_above = 20000
+    queue_nack_dead_above = 5000
+    queue_loaded_retry_delay = 500
+
+    [notify]
+
+    startup_notification = {{ .Values.vigil.startup_notification }}
+    reminder_interval = {{ .Values.vigil.reminder_interval }}
+
+    [notify.slack]
+
+    hook_url = "{{ .Values.vigil.hook_url }}"
+    mention_channel = {{ .Values.vigil.mention_channel }}
+
+
+    [probe]
+
+{{ .Values.vigil.additionConfig | indent 4 }}

charts/vigil/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "vigil.fullname" . }}
+  labels:
+    {{- include "vigil.labels" . | nindent 4 }}
+spec:
+{{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+{{- end }}
+  selector:
+    matchLabels:
+      {{- include "vigil.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+    {{- with .Values.podAnnotations }}
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/secrets.yaml") . | sha256sum }}
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+      labels:
+        {{- include "vigil.selectorLabels" . | nindent 8 }}
+    spec:
+      volumes:
+        - name: vigil
+          configMap:
+            name: {{ include "vigil.fullname" . }}
+            defaultMode: 0777
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "vigil.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          volumeMounts:
+            - mountPath: /etc/vigil.cfg
+              name: vigil
+              subPath: vigil.cfg
+          ports:
+            - name: http
+              containerPort: 8080
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}

charts/vigil/templates/hpa.yaml

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+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "vigil.fullname" . }}
+  labels:
+    {{- include "vigil.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "vigil.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+  {{- if .Values.autoscaling.targetCPUUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+  {{- end }}
+  {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
+    - type: Resource
+      resource:
+        name: memory
+        targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+  {{- end }}
+{{- end }}

charts/vigil/templates/ingress.yaml

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+{{- if .Values.ingress.enabled -}}
+{{- $fullName := include "vigil.fullname" . -}}
+{{- $svcPort := .Values.service.port -}}
+{{- 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 "vigil.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- 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: {{ . }}
+            backend:
+              serviceName: {{ $fullName }}
+              servicePort: {{ $svcPort }}
+          {{- end }}
+    {{- end }}
+  {{- end }}

charts/vigil/templates/service.yaml

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+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "vigil.fullname" . }}
+  labels:
+    {{- include "vigil.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "vigil.selectorLabels" . | nindent 4 }}

charts/vigil/templates/serviceaccount.yaml

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+{{- if .Values.serviceAccount.create -}}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "vigil.serviceAccountName" . }}
+  labels:
+    {{- include "vigil.labels" . | nindent 4 }}
+  {{- with .Values.serviceAccount.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+{{- end }}