random kubernetes pv provisioning notes

README.md

This is an example of testing Kubernetes volume provisioning.

This will work on a Kubernetes 1.2 beta 0 cluster, provisioned by:

1. Rsyncing https://github.com/kubernetes/kubernetes/tree/9f62a2b196ad5fad3bc66ef78c5459fb9f072de2/cluster over the cluster directory in this release of k8s: https://github.com/kubernetes/kubernetes/releases/download/v1.2.0-beta.0/kubernetes.tar.gz
2. Running KUBERNETES_PROVIDER=aws kube-up.sh

After that, kubectl create -f busybox-pvc.yaml and kubectl create -f busybox-rc.yaml

busybox-pvc.yaml

kind: "PersistentVolumeClaim"
apiVersion: "v1"
metadata: 
  name: "claim1"
  annotations: 
    volume.alpha.kubernetes.io/storage-class: "foo"
spec: 
  accessModes: 
    - "ReadWriteOnce"
  resources: 
    requests: 
      storage: "3Gi"

busybox-rc.yaml

apiVersion: v1
kind: ReplicationController
metadata:
  labels:
    app: pvtest 
  name: pvtest 
spec:
  replicas: 1
  selector:
    app: pvtest
  template:
    metadata:
      labels:
        app: pvtest
    spec:
      containers:
      - name: busybox
        image: busybox
        command:
          - sleep
          - "3600"
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - mountPath: /importantdata
          name: importantdata
      restartPolicy: Always
      volumes:
        - name: importantdata
          persistentVolumeClaim:
            claimName: claim1

mongo-controller.yaml

apiVersion: v1
kind: ReplicationController
metadata:
  labels:
    name: mongo
  name: mongo-controller
spec:
  replicas: 1
  template:
    metadata:
      labels:
        name: mongo
    spec:
      containers:
      - image: mongo
        name: mongo
        ports:
        - name: mongo
          containerPort: 27017
          hostPort: 27017
        volumeMounts:
            - name: mongo-persistent-storage
              mountPath: /data/db
      volumes:
        - name: mongo-persistent-storage
          persistentVolumeClaim:
            claimName: mongo

mongo-pvc.yaml

kind: "PersistentVolumeClaim"
apiVersion: "v1"
metadata: 
  name: "mongo"
  annotations: 
    volume.alpha.kubernetes.io/storage-class: "mongo"
spec: 
  accessModes: 
    - "ReadWriteOnce"
  resources: 
    requests: 
      storage: "30Gi"

mongo-service.yaml

apiVersion: v1
kind: Service
metadata:
  labels:
    name: mongo
  name: mongo
spec:
  ports:
    - port: 27017
      targetPort: 27017
  selector:
    name: mongo

web-controller-demo.yaml

apiVersion: v1
kind: ReplicationController
metadata:
  labels:
    name: web
  name: web-controller
spec:
  replicas: 2
  selector:
    name: web
  template:
    metadata:
      labels:
        name: web
    spec:
      containers:
      - image: node:0.10.40
        command: ['/bin/sh', '-c']
        args: ['cd /home && git clone https://github.com/ijason/NodeJS-Sample-App.git demo && cd demo/EmployeeDB/ && npm install && sed -i -- ''s/localhost/mongo/g'' app.js && node app.js']
        name: web
        ports:
        - containerPort: 3000
          name: http-server
        livenessProbe:
          httpGet:
            path: /
            port: 3000
          timeoutSeconds: 5
          initialDelaySeconds: 15

web-service.yaml

apiVersion: v1
kind: Service
metadata:
  name: web
  labels:
    name: web
spec:
  type: LoadBalancer
  ports:
    - port: 80
      targetPort: 3000
      protocol: TCP
  selector:
    name: web