Launch

This is the documentation for OpenEBS Docs 3.3.x, which is no longer actively maintained.

See the latest version (4.1.x) to view the latest documentation.

This user guide will guide you in deploying your sample application in a Jiva setup.

Deploying a sample application#

To deploy a sample application using the previously created StorageClass, a PVC, that utilises the created StorageClass, needs to be deployed. Given below is an example YAML for a PVC which uses the SC created earlier.

kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: example-jiva-csi-pvc
spec:
  storageClassName: openebs-jiva-csi-sc
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 4Gi

Apply the above PVC yaml to dynamically create volume and verify that the PVC has been successfully created and bound to a PersistentVolume (PV).

kubectl get pvc

Sample Output:

NAME                   STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS           AGE
example-jiva-csi-pvc   Bound    pvc-ffc1e885-0122-4b5b-9d36-ae131717a77b   4Gi        RWO            openebs-jiva-csi-sc    1m

Also, verify if volume is ready to serve IOs.

Sample Command:

kubectl get jivavolume pvc-ffc1e885-0122-4b5b-9d36-ae131717a77b -n openebs

Sample Output:

NAME                                       REPLICACOUNT   PHASE   STATUS
pvc-ffc1e885-0122-4b5b-9d36-ae131717a77b   1              Ready   RW

Now, to deploy an application using the above created PVC specify the claimName parameter under volumes.

  apiVersion: apps/v1
  kind: Deployment
  metadata:
    name: busybox
    labels:
      app: busybox
  spec:
    replicas: 1
    strategy:
      type: RollingUpdate
    selector:
      matchLabels:
        app: busybox
    template:
      metadata:
        labels:
          app: busybox
      spec:
        containers:
        - resources:
            limits:
              cpu: 0.5
          name: busybox
          image: busybox
          command: ['sh', '-c', 'echo Container 1 is Running ; sleep 3600']
          imagePullPolicy: IfNotPresent
          ports:
          - containerPort: 3306
            name: busybox
          volumeMounts:
          - mountPath: /var/lib/mysql
            name: demo-vol1
        volumes:
        - name: demo-vol1
          persistentVolumeClaim:
            claimName: example-jiva-csi-pvc

Apply the above YAML. Verify that the pod is running.

kubectl get pods

Sample Output:

NAME      READY   STATUS    RESTARTS   AGE
busybox   1/1     Running   0          97s

Deploying a sample application#

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