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eksrhaeksrha
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add helm cart + first try package
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‎.github/workflows/build-helm-chart.yaml‎

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name: Build helm chart
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on:
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workflow_dispatch:
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push:
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branches:
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- main
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paths:
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- "docker-image/**"
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- "helm/**"
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jobs:
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generate_tag:
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runs-on: ubuntu-latest
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outputs:
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output: ${{ steps.tag.outputs.tag }}
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steps:
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- name: Check out the repo
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uses: actions/checkout@v2
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with:
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ref: main
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fetch-depth: 0
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- id: tag
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shell: bash
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run: |
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echo "Tag: $(git describe --abbrev=0)"
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echo "::set-output name=tag::$(git describe --abbrev=0)"
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build-helm-chart:
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runs-on: ubuntu-latest
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needs: generate_tag
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steps:
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- name: Check out the repo
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uses: actions/checkout@v2
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- name: Configure Git
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run: |
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git config user.name "$GITHUB_ACTOR"
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git config user.email "[email protected]"
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- name: Update chart application version
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run: |
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sed -i -e "s/appVersion:.*/appVersion: ${{ needs.generate_tag.outputs.output }}/g" helm/Chart.yaml
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- name: Run chart-releaser
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uses: helm/[email protected]
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with:
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charts_dir: helm
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config: cr.yaml
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charts_repo_url: http://fullstack-devops.github.io/helm-charts/
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env:
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CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
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HELM_REPO_TOKEN: "${{ secrets.HELM_REPO_TOKEN }}"
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- name: Build and push image
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uses: docker/build-push-action@v2
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with:
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builder: ${{ steps.buildx.outputs.name }}
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context: ./docker-image/
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platforms: ${{ env.IMAGE_PLATFORMS }}
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push: true
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tags: |
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ghcr.io/${{ github.repository }}:latest
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ghcr.io/${{ github.repository }}:${{ needs.generate_tag.outputs.output }}

‎cr.yml‎

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owner: fullstack-devops
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git-repo: helm-charts
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token: ${HELM_REPO_TOKEN}

‎helm/.helmignore‎

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

‎helm/Chart.yaml‎

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apiVersion: v2
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name: dns-bind
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description: A bind9 Helm chart for Kubernetes
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# A chart can be either an 'application' or a 'library' chart.
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#
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# Application charts are a collection of templates that can be packaged into versioned archives
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# to be deployed.
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#
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# Library charts provide useful utilities or functions for the chart developer. They're included as
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# a dependency of application charts to inject those utilities and functions into the rendering
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# pipeline. Library charts do not define any templates and therefore cannot be deployed.
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type: application
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# This is the chart version. This version number should be incremented each time you make changes
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# to the chart and its templates, including the app version.
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# Versions are expected to follow Semantic Versioning (https://semver.org/)
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version: 0.1.0
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# This is the version number of the application being deployed. This version number should be
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# incremented each time you make changes to the application. Versions are not expected to
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# follow Semantic Versioning. They should reflect the version the application is using.
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# It is recommended to use it with quotes.
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appVersion: "0.0.5"

‎helm/templates/NOTES.txt‎

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1. Get the application URL by running these commands:
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{{- if contains "NodePort" .Values.serviceDns.type }}
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export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "dns-bind.fullname" . }})
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export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
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echo http://$NODE_IP:$NODE_PORT
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{{- else if contains "LoadBalancer" .Values.serviceDns.type }}
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NOTE: It may take a few minutes for the LoadBalancer IP to be available.
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You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "dns-bind.fullname" . }}'
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export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "dns-bind.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
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echo http://$SERVICE_IP:53
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{{- else if contains "ClusterIP" .Values.serviceDns.type }}
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export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "dns-bind.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
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export CONTAINER_PORT=$(kubectl get pod --namespace {{ .Release.Namespace }} $POD_NAME -o jsonpath="{.spec.containers[0].ports[0].containerPort}")
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echo "Visit http://127.0.0.1:8080 to use your application"
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kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 8080:$CONTAINER_PORT
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{{- end }}

‎helm/templates/_helpers.tpl‎

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

‎helm/templates/configmap.yaml‎

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apiVersion: v1
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kind: ConfigMap
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metadata:
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name: {{ include "dns-bind.fullname" . }}
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labels:
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{{- include "dns-bind.labels" . | nindent 4 }}
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data:
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DEBUG_ENTRYPOINT: {{ .Values.envValues.debug_entrypoint | quote }}
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DOCKER_LOGS: {{ .Values.envValues.docker_logs | quote }}
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{{- if .Values.envValues.wildcard_dns }}
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WILDCARD_DNS: {{ .Values.envValues.wildcard_dns | quote }}
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{{- end }}
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{{- if .Values.envValues.extra_hosts }}
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EXTRA_HOSTS: {{ .Values.envValues.extra_hosts | quote }}
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{{- end }}
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DNSSEC_VALIDATE: {{ .Values.envValues.dnssec_validate | quote }}
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{{- if .Values.envValues.dns_forwarder }}
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DNS_FORWARDER: {{ .Values.envValues.dns_forwarder | quote }}
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{{- end }}
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TTL_TIME: {{ .Values.envValues.ttl_time | quote }}
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REFRESH_TIME: {{ .Values.envValues.refresh_time | quote }}
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RETRY_TIME: {{ .Values.envValues.retry_time | quote }}
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EXPIRY_TIME: {{ .Values.envValues.expiry_time | quote }}
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MAX_CACHE_TIME: {{ .Values.envValues.max_cache_time | quote }}
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{{- if .Values.envValues.allow_query }}
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ALLOW_QUERY: {{ .Values.envValues.allow_query | quote }}
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{{- end }}
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{{- if .Values.envValues.allow_recursion }}
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ALLOW_RECURSION: {{ .Values.envValues.allow_recursion | quote }}
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{{- end }}

‎helm/templates/deployment.yaml‎

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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: {{ include "dns-bind.fullname" . }}
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labels:
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{{- include "dns-bind.labels" . | nindent 4 }}
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spec:
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{{- if not .Values.autoscaling.enabled }}
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replicas: {{ .Values.replicaCount }}
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{{- end }}
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selector:
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matchLabels:
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{{- include "dns-bind.selectorLabels" . | nindent 6 }}
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template:
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metadata:
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{{- with .Values.podAnnotations }}
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annotations:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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labels:
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{{- include "dns-bind.selectorLabels" . | nindent 8 }}
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spec:
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{{- with .Values.imagePullSecrets }}
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imagePullSecrets:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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serviceAccountName: {{ include "dns-bind.serviceAccountName" . }}
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securityContext:
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{{- toYaml .Values.podSecurityContext | nindent 8 }}
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containers:
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- name: {{ .Chart.Name }}
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securityContext:
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{{- toYaml .Values.securityContext | nindent 12 }}
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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- containerPort: 53
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name: dns
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protocol: TCP
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- containerPort: 53
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name: dns-udp
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protocol: UDP
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# TODO: health checks!
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# livenessProbe:
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# httpGet:
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# path: /
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# port: http
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# readinessProbe:
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# httpGet:
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# path: /
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# port: http
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envFrom:
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- configMapRef:
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name: {{ .Release.Name }}-dns-bind
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resources:
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{{- toYaml .Values.resources | nindent 12 }}
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{{- with .Values.nodeSelector }}
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nodeSelector:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with .Values.affinity }}
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affinity:
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{{- toYaml . | nindent 8 }}
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{{- end }}
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{{- with .Values.tolerations }}
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tolerations:
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{{- toYaml . | nindent 8 }}
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{{- end }}

‎helm/templates/hpa.yaml‎

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

‎helm/templates/service.yaml‎

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apiVersion: v1
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kind: Service
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metadata:
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name: {{ include "dns-bind.fullname" . }}
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labels:
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{{- include "dns-bind.labels" . | nindent 4 }}
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spec:
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type: {{ .Values.serviceDns.type }}
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{{- if .Values.serviceDns.loadBalancerIP }}
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loadBalancerIP: {{ .Values.serviceDns.loadBalancerIP }}
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{{- end }}
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{{- if or (eq .Values.serviceDns.type "NodePort") (eq .Values.serviceDns.type "LoadBalancer") }}
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externalTrafficPolicy: {{ .Values.serviceDns.externalTrafficPolicy }}
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{{- end }}
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ports:
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- port: 53
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targetPort: dns
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{{- if .Values.serviceDns.nodePort }}
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nodePort: {{ .Values.serviceDns.nodePort }}
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{{- end }}
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protocol: TCP
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name: dns
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- port: 53
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targetPort: dns-udp
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{{- if and (.Values.serviceDns.nodePort) (eq .Values.serviceDns.type "NodePort") }}
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nodePort: {{ .Values.serviceDns.nodePort }}
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{{- end }}
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protocol: UDP
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name: dns-udp
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selector:
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{{- include "dns-bind.selectorLabels" . | nindent 4 }}

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