mirror of https://github.com/helm/helm
"Adopting to https://github.com/kubernetes/charts format per bacongobbler"
Yahav Biran
8 years ago
parent
03d8ed11f0
commit
1586f26ade
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# Guestbook
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[Guestbook](https://github.com/kubernetes/examples/tree/master/guestbook) is a simple, multi-tier PHP-based web application that uses redis chart.
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## TL;DR;
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```console
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$ helm install stable/guestbook
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```
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## Introduction
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This chart bootstraps a [guestbook](https://github.com/kubernetes/examples/tree/master/guestbook) deployment on a [Kubernetes](http://kubernetes.io) cluster using the [Helm](https://helm.sh) package manager.
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It also packages the [Bitnami Redis chart](https://github.com/kubernetes/charts/tree/master/stable/redis) which is required for bootstrapping a Redis deployment for the caching requirements of the guestbook application.
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## Prerequisites
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- Kubernetes 1.4+ with Beta APIs enabled
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- PV provisioner support in the underlying infrastructure
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## Installing the Chart
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To install the chart with the release name `my-release`:
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```console
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$ helm install --name my-release stable/guestbook
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```
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The command deploys the guestbook on the Kubernetes cluster in the default configuration. The [configuration](#configuration) section lists the parameters that can be configured during installation.
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> **Tip**: List all releases using `helm list`
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## Uninstalling the Chart
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To uninstall/delete the `my-release` deployment:
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```console
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$ helm delete my-release
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```
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The command removes all the Kubernetes components associated with the chart and deletes the release.
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## Configuration
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The following tables lists the configurable parameters of the WordPress chart and their default values.
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| Parameter | Description | Default |
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| ------------------------------- | ------------------------------- | ---------------------------------------------------------- |
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| `image` | apapche-php image | `google-samples/gb-frontend:{VERSION}` |
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| `imagePullPolicy` | Image pull policy | `IfNotPresent` |
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| `nodeSelector` | Node labels for pod assignment | `{}` |
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The above parameters map to the env variables defined in [bitnami/wordpress](http://github.com/bitnami/bitnami-docker-wordpress). For more information please refer to the [bitnami/wordpress](http://github.com/bitnami/bitnami-docker-wordpress) image documentation.
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Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
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```console
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$ helm install --name my-release \
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--set redis.usePassword=false \
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stable/guestbook
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```
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```console
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$ helm install --name my-release -f values.yaml stable/guestbook
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```
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> **Tip**: You can use the default [values.yaml](values.yaml)
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Binary file not shown.
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dependencies:
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- name: redis
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repository: https://kubernetes-charts.storage.googleapis.com/
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version: 1.1.4
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digest: sha256:ca7a601363b96fed2bf4774ef8fbc5cdbdb91a0fb5bc083192072e39eee844ae
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generated: 2017-12-31T21:26:54.89952-08:00
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@ -0,0 +1,7 @@
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dependencies:
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- name: redis
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version: 1.1.4
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repository: https://kubernetes-charts.storage.googleapis.com/
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condition: redis.enabled
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tags:
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- redis-database
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@ -0,0 +1,52 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: {{ template "guestbook.fullname" . }}
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labels:
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app: {{ template "guestbook.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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replicas: {{ .Values.replicaCount }}
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template:
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metadata:
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labels:
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app: {{ template "guestbook.name" . }}
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release: {{ .Release.Name }}
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spec:
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containers:
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- name: {{ .Chart.Name }}
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image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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- containerPort: {{ .Values.service.frontend.internalPort }}
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livenessProbe:
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httpGet:
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path: /
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port: {{ .Values.service.frontend.internalPort }}
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readinessProbe:
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httpGet:
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path: /
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port: {{ .Values.service.frontend.internalPort }}
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resources:
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{{ toYaml .Values.resources | indent 12 }}
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{{- if .Values.nodeSelector }}
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nodeSelector:
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{{ toYaml .Values.nodeSelector | indent 8 }}
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{{- end }}
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env:
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- name: {{"GET_HOSTS_FROM"}}
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value: {{"env"}}
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- name: {{"REDIS_MASTER_SERVICE_HOST"}}
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{{- if .Values.redis.enabled }}
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value: {{ template "redis.fullname" . }}
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{{- else }}
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value: {{ .Values.externalDatabase.host | quote }}
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{{- end }}
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- name: {{"REDIS_SLAVE_SERVICE_HOST"}}
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{{- if .Values.redis.enabled }}
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value: {{ template "redis.fullname" . }}
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{{- else }}
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value: {{ .Values.externalDatabase.host | quote }}
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{{- end }}
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@ -1,39 +0,0 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: {{ "frontend" }}
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labels:
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app: {{ template "gbhelm.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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replicas: {{ "1" }}
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template:
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metadata:
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labels:
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app: {{ "guestbook" }}
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tier: {{"frontend"}}
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release: {{ .Release.Name }}
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spec:
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containers:
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- name: {{ "php-redis" }}
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image: "{{ .Values.image.frontend_deployment.repository }}:{{ .Values.image.frontend_deployment.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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- containerPort: {{ .Values.service.frontend.port }}
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livenessProbe:
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httpGet:
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path: /
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port: {{ .Values.service.frontend.port }}
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readinessProbe:
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httpGet:
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path: /
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port: {{ .Values.service.frontend.port }}
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resources:
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requests:
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cpu: {{"100m"}}
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memory: {{"100Mi"}}
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env:
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- name: {{"GET_HOSTS_FROM"}}
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value: {{"dns"}}
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@ -1,17 +0,0 @@
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ "frontend" }}
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labels:
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app: {{ "guestbook" }}
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tier: {{ "frontend" }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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type: {{ .Values.service.frontend.type }}
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ports:
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- port: {{.Values.service.frontend.port}}
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selector:
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app: {{.Values.service.frontend.selector.app}}
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tier: {{.Values.service.frontend.selector.tier}}
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@ -0,0 +1,32 @@
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{{- if .Values.ingress.enabled -}}
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{{- $serviceName := include "guestbook.fullname" . -}}
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{{- $servicePort := .Values.service.externalPort -}}
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: {{ template "guestbook.fullname" . }}
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labels:
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app: {{ template "guestbook.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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annotations:
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{{- range $key, $value := .Values.ingress.annotations }}
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{{ $key }}: {{ $value | quote }}
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{{- end }}
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spec:
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rules:
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{{- range $host := .Values.ingress.hosts }}
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- host: {{ $host }}
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http:
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paths:
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- path: /
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backend:
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serviceName: {{ $serviceName }}
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servicePort: {{ $servicePort }}
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{{- end -}}
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{{- if .Values.ingress.tls }}
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tls:
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{{ toYaml .Values.ingress.tls | indent 4 }}
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{{- end -}}
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{{- end -}}
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@ -1,29 +0,0 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: {{ "redis-master" }}
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labels:
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app: {{ template "gbhelm.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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replicas: {{ "1" }}
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template:
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metadata:
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labels:
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app: {{ "redis" }}
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tier: {{"backend"}}
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role: {{"master"}}
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release: {{ .Release.Name }}
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spec:
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containers:
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- name: {{ "master" }}
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image: "{{ .Values.image.redis_master.repository }}:{{ .Values.image.redis_master.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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- containerPort: {{ "6379" }}
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resources:
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requests:
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cpu: {{"100m"}}
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memory: {{"100Mi"}}
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@ -1,19 +0,0 @@
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ "redis-master" }}
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labels:
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app: {{ "redis" }}
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role: {{ "master" }}
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tier: {{ "backend" }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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ports:
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- port: {{ .Values.service.redis_master.port }}
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targetPort: {{ .Values.service.redis_master.targetPort }}
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selector:
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app: {{ .Values.service.redis_master.selector.app}}
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role: {{ .Values.service.redis_master.selector.role }}
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tier: {{ .Values.service.redis_master.selector.tier }}
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@ -1,32 +0,0 @@
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apiVersion: extensions/v1beta1
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kind: Deployment
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metadata:
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name: {{ "redis-slave" }}
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labels:
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app: {{ template "gbhelm.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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replicas: {{ "1" }}
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template:
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metadata:
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labels:
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app: {{ "redis" }}
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tier: {{"backend"}}
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role: {{"slave"}}
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release: {{ .Release.Name }}
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spec:
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containers:
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- name: {{ "slave" }}
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image: "{{ .Values.image.redis_slave.repository }}:{{ .Values.image.redis_slave.tag }}"
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imagePullPolicy: {{ .Values.image.pullPolicy }}
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ports:
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- containerPort: {{ "6379" }}
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resources:
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requests:
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cpu: {{"100m"}}
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memory: {{"100Mi"}}
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env:
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- name: {{"GET_HOSTS_FROM"}}
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value: {{"dns"}}
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@ -1,18 +0,0 @@
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ "redis-slave" }}
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labels:
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app: {{ "redis" }}
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role: {{ "slave" }}
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tier: {{ "backend" }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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ports:
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- port: {{.Values.service.redis_slave.port}}
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selector:
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app: {{.Values.service.redis_slave.selector.app}}
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role: {{.Values.service.redis_slave.selector.role}}
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tier: {{.Values.service.redis_slave.selector.tier}}
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@ -0,0 +1,19 @@
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ template "guestbook.fullname" . }}
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labels:
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app: {{ template "guestbook.name" . }}
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chart: {{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}
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release: {{ .Release.Name }}
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heritage: {{ .Release.Service }}
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spec:
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type: {{ .Values.service.frontend.type }}
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ports:
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- port: {{ .Values.service.frontend.externalPort }}
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targetPort: {{ .Values.service.frontend.internalPort }}
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protocol: TCP
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name: {{ .Values.service.name }}
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selector:
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app: {{ template "guestbook.name" . }}
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release: {{ .Release.Name }}
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