From 9421276024ccb8b07f0c7f68607b2e77fe16c0fa Mon Sep 17 00:00:00 2001 From: Jesse Suen Date: Wed, 25 Jul 2018 14:52:39 -0700 Subject: [PATCH] Add helm guestbook example --- README.md | 3 +- helm-guestbook/.helmignore | 21 ++++++++++ helm-guestbook/Chart.yaml | 5 +++ helm-guestbook/templates/NOTES.txt | 19 +++++++++ helm-guestbook/templates/_helpers.tpl | 32 +++++++++++++++ helm-guestbook/templates/deployment.yaml | 51 ++++++++++++++++++++++++ helm-guestbook/templates/service.yaml | 19 +++++++++ helm-guestbook/values.yaml | 45 +++++++++++++++++++++ 8 files changed, 194 insertions(+), 1 deletion(-) create mode 100644 helm-guestbook/.helmignore create mode 100644 helm-guestbook/Chart.yaml create mode 100644 helm-guestbook/templates/NOTES.txt create mode 100644 helm-guestbook/templates/_helpers.tpl create mode 100644 helm-guestbook/templates/deployment.yaml create mode 100644 helm-guestbook/templates/service.yaml create mode 100644 helm-guestbook/values.yaml diff --git a/README.md b/README.md index 8de3029..1c5d013 100644 --- a/README.md +++ b/README.md @@ -1,12 +1,13 @@ # ArgoCD Example Apps -This repository contains example ksonnet applications for demoing ArgoCD functionality. Feel free +This repository contains example applications for demoing ArgoCD functionality. Feel free to register this repository to your ArgoCD instance, or fork this repo and push your own commits to explore ArgoCD and GitOps! | Application | Description | |-------------|-------------| | [guestbook](guestbook/) | The ksonnet hello word application | +| [helm-guestbook](helm-guestbook/) | The guestbook application as a Helm chart | | [pre-post-sync](pre-post-sync/) | Demonstrates ArgoCD PreSync and PostSync hooks | | [blue-green-deploy](blue-green-deploy/) | Demonstrates an ArgoCD Sync hook which performs a blue/green deployment | | [sock-shop](sock-shop/) | A microservices demo application (https://microservices-demo.github.io) | diff --git a/helm-guestbook/.helmignore b/helm-guestbook/.helmignore new file mode 100644 index 0000000..f0c1319 --- /dev/null +++ b/helm-guestbook/.helmignore @@ -0,0 +1,21 @@ +# 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 diff --git a/helm-guestbook/Chart.yaml b/helm-guestbook/Chart.yaml new file mode 100644 index 0000000..0e6f934 --- /dev/null +++ b/helm-guestbook/Chart.yaml @@ -0,0 +1,5 @@ +apiVersion: v1 +appVersion: "1.0" +description: A Helm chart for Kubernetes +name: helm-guestbook +version: 0.1.0 diff --git a/helm-guestbook/templates/NOTES.txt b/helm-guestbook/templates/NOTES.txt new file mode 100644 index 0000000..37a1485 --- /dev/null +++ b/helm-guestbook/templates/NOTES.txt @@ -0,0 +1,19 @@ +1. Get the application URL by running these commands: +{{- if .Values.ingress.enabled }} +{{- range .Values.ingress.hosts }} + http{{ if $.Values.ingress.tls }}s{{ end }}://{{ . }}{{ $.Values.ingress.path }} +{{- end }} +{{- else if contains "NodePort" .Values.service.type }} + export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ template "helm-guestbook.fullname" . }}) + export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}") + echo http://$NODE_IP:$NODE_PORT +{{- else if contains "LoadBalancer" .Values.service.type }} + NOTE: It may take a few minutes for the LoadBalancer IP to be available. + You can watch the status of by running 'kubectl get svc -w {{ template "helm-guestbook.fullname" . }}' + export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ template "helm-guestbook.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}') + 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={{ template "helm-guestbook.name" . }},release={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}") + echo "Visit http://127.0.0.1:8080 to use your application" + kubectl port-forward $POD_NAME 8080:80 +{{- end }} diff --git a/helm-guestbook/templates/_helpers.tpl b/helm-guestbook/templates/_helpers.tpl new file mode 100644 index 0000000..20f5d8e --- /dev/null +++ b/helm-guestbook/templates/_helpers.tpl @@ -0,0 +1,32 @@ +{{/* vim: set filetype=mustache: */}} +{{/* +Expand the name of the chart. +*/}} +{{- define "helm-guestbook.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 "helm-guestbook.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 "helm-guestbook.chart" -}} +{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}} +{{- end -}} diff --git a/helm-guestbook/templates/deployment.yaml b/helm-guestbook/templates/deployment.yaml new file mode 100644 index 0000000..6b14d3f --- /dev/null +++ b/helm-guestbook/templates/deployment.yaml @@ -0,0 +1,51 @@ +apiVersion: apps/v1beta2 +kind: Deployment +metadata: + name: {{ template "helm-guestbook.fullname" . }} + labels: + app: {{ template "helm-guestbook.name" . }} + chart: {{ template "helm-guestbook.chart" . }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} +spec: + replicas: {{ .Values.replicaCount }} + selector: + matchLabels: + app: {{ template "helm-guestbook.name" . }} + release: {{ .Release.Name }} + template: + metadata: + labels: + app: {{ template "helm-guestbook.name" . }} + release: {{ .Release.Name }} + spec: + containers: + - name: {{ .Chart.Name }} + image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}" + imagePullPolicy: {{ .Values.image.pullPolicy }} + ports: + - name: http + containerPort: 80 + protocol: TCP + livenessProbe: + httpGet: + path: / + port: http + readinessProbe: + httpGet: + path: / + port: http + resources: +{{ toYaml .Values.resources | indent 12 }} + {{- with .Values.nodeSelector }} + nodeSelector: +{{ toYaml . | indent 8 }} + {{- end }} + {{- with .Values.affinity }} + affinity: +{{ toYaml . | indent 8 }} + {{- end }} + {{- with .Values.tolerations }} + tolerations: +{{ toYaml . | indent 8 }} + {{- end }} diff --git a/helm-guestbook/templates/service.yaml b/helm-guestbook/templates/service.yaml new file mode 100644 index 0000000..b7aab0b --- /dev/null +++ b/helm-guestbook/templates/service.yaml @@ -0,0 +1,19 @@ +apiVersion: v1 +kind: Service +metadata: + name: {{ template "helm-guestbook.fullname" . }} + labels: + app: {{ template "helm-guestbook.name" . }} + chart: {{ template "helm-guestbook.chart" . }} + release: {{ .Release.Name }} + heritage: {{ .Release.Service }} +spec: + type: {{ .Values.service.type }} + ports: + - port: {{ .Values.service.port }} + targetPort: http + protocol: TCP + name: http + selector: + app: {{ template "helm-guestbook.name" . }} + release: {{ .Release.Name }} diff --git a/helm-guestbook/values.yaml b/helm-guestbook/values.yaml new file mode 100644 index 0000000..3666712 --- /dev/null +++ b/helm-guestbook/values.yaml @@ -0,0 +1,45 @@ +# Default values for helm-guestbook. +# This is a YAML-formatted file. +# Declare variables to be passed into your templates. + +replicaCount: 1 + +image: + repository: gcr.io/heptio-images/ks-guestbook-demo + tag: 0.1 + pullPolicy: IfNotPresent + +service: + type: ClusterIP + port: 80 + +ingress: + enabled: false + annotations: {} + # kubernetes.io/ingress.class: nginx + # kubernetes.io/tls-acme: "true" + path: / + hosts: + - chart-example.local + tls: [] + # - secretName: chart-example-tls + # hosts: + # - chart-example.local + +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 + +nodeSelector: {} + +tolerations: [] + +affinity: {}