helm chart with service provision/binding
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apiVersion: v1
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appVersion: "1.0"
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description: Ruby application that consumes Service Catalog bindings
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name: ruby-with-binding
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version: 0.1.0
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# Spring Music for Kubernetes Service Catalog
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To deploy the sample Ruby/Sinatra application with a service instance/binding from your Service Catalog:
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```shell
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helm upgrade --install show-me-secrets . \
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--set "database.service.class=cleardb,database.service.plan=spark"
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```
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In the example above, it is assumed that your Service Catalog has a service class "cleardb" with a service plan "spark".
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To run Spring Music without a database service instnace/binding:
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```shell
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helm upgrade --install show-me-secrets . \
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--set "database.service.class=null"
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```
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## Clean up
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To remove the sample application:
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```shell
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helm delete --purge show-me-secrets
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```
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1. Get the application URL by running these commands:
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{{- if contains "NodePort" .Values.service.type }}
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export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "ruby-with-binding.fullname" . }})
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export NODE_IP=$(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.service.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 svc -w {{ include "ruby-with-binding.fullname" . }}'
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export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "ruby-with-binding.fullname" . }} -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
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echo http://$SERVICE_IP:{{ .Values.service.port }}
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{{- else if contains "ClusterIP" .Values.service.type }}
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export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "ruby-with-binding.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
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echo "Visit http://127.0.0.1:{{ .Values.service.port }} to use your application"
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kubectl port-forward $POD_NAME {{ .Values.service.port }}:8080
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{{- end }}
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{{/* vim: set filetype=mustache: */}}
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{{/*
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Expand the name of the chart.
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*/}}
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{{- define "ruby-with-binding.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 "ruby-with-binding.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 "ruby-with-binding.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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{{- if .Values.database.service.class -}}
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# svcat bind app-db --name db-binding --secret-name db-secret
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apiVersion: servicecatalog.k8s.io/v1beta1
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kind: ServiceBinding
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metadata:
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name: {{ include "ruby-with-binding.fullname" . }}-db-binding
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spec:
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instanceRef:
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name: {{ include "ruby-with-binding.fullname" . }}-db-instance
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secretName: {{ template "ruby-with-binding.fullname" . }}-db-secret
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{{- end -}}
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{{- if .Values.database.service.class -}}
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# svcat provision app-db --class cleardb --plan spark
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apiVersion: servicecatalog.k8s.io/v1beta1
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kind: ServiceInstance
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metadata:
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name: {{ include "ruby-with-binding.fullname" . }}-db-instance
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spec:
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clusterServiceClassExternalName: {{ .Values.database.service.class }}
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clusterServicePlanExternalName: {{ .Values.database.service.plan }}
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{{- end -}}
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apiVersion: apps/v1beta2
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kind: Deployment
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metadata:
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name: {{ include "ruby-with-binding.fullname" . }}
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labels:
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app.kubernetes.io/name: {{ include "ruby-with-binding.name" . }}
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helm.sh/chart: {{ include "ruby-with-binding.chart" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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app.kubernetes.io/managed-by: {{ .Release.Service }}
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spec:
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replicas: {{ .Values.replicaCount }}
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selector:
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matchLabels:
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app.kubernetes.io/name: {{ include "ruby-with-binding.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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template:
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metadata:
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labels:
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app.kubernetes.io/name: {{ include "ruby-with-binding.name" . }}
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app.kubernetes.io/instance: {{ .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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- name: http
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containerPort: 8080
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protocol: TCP
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{{- if .Values.database.service.class }}
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env:
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- name: DATABASE_URL
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valueFrom:
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secretKeyRef:
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name: {{ template "ruby-with-binding.fullname" . }}-db-secret
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key: uri
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- name: DATABASE_JDBC_URL
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valueFrom:
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secretKeyRef:
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name: {{ template "ruby-with-binding.fullname" . }}-db-secret
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key: jdbcUrl
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- name: DATABASE_USERNAME
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valueFrom:
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secretKeyRef:
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name: {{ template "ruby-with-binding.fullname" . }}-db-secret
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key: username
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- name: DATABASE_PASSWORD
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valueFrom:
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secretKeyRef:
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name: {{ template "ruby-with-binding.fullname" . }}-db-secret
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key: password
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{{- end }}
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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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{{- if .Values.database.service.class }}
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volumes:
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- name: db-credentials
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secret:
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secretName: {{ template "ruby-with-binding.fullname" . }}-db-secret
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{{- end }}
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apiVersion: v1
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kind: Service
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metadata:
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name: {{ include "ruby-with-binding.fullname" . }}
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labels:
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app.kubernetes.io/name: {{ include "ruby-with-binding.name" . }}
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helm.sh/chart: {{ include "ruby-with-binding.chart" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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app.kubernetes.io/managed-by: {{ .Release.Service }}
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spec:
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type: {{ .Values.service.type }}
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ports:
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- port: {{ .Values.service.port }}
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targetPort: http
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protocol: TCP
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name: http
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selector:
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app.kubernetes.io/name: {{ include "ruby-with-binding.name" . }}
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app.kubernetes.io/instance: {{ .Release.Name }}
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# Default values for ruby-with-binding.
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# This is a YAML-formatted file.
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# Declare variables to be passed into your templates.
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replicaCount: 1
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database:
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service:
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class: cleardb
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plan: spark
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image:
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repository: drnic/show-me-secrets-ruby
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tag: latest
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pullPolicy: Always
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nameOverride: ""
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fullnameOverride: ""
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service:
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type: ClusterIP
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port: 3000
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