Launch

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