(kubectl) Creating a StatefulSet Mounted with an OBS Volume

Scenario

CCE allows you to use an existing OBS volume to create a StatefulSet through a PersistentVolumeClaim (PVC).

Notes and Constraints

The following configuration example applies to clusters of Kubernetes 1.13 or earlier.

Procedure

Create an OBS volume by referring to (kubectl) Automatically Creating an OBS Volume and obtain the PVC name.
Use kubectl to connect to the cluster. For details, see Connecting to a Cluster Using kubectl.

Create a YAML file for creating the workload. Assume that the file name is obs-statefulset-example.yaml.

touch obs-statefulset-example.yaml

vi obs-statefulset-example.yaml

Example YAML:

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: obs-statefulset-example
  namespace: default
spec:
  replicas: 1
  selector:
    matchLabels:
      app: obs-statefulset-example
  serviceName: qwqq
  template:
    metadata:
      annotations:
        metrics.alpha.kubernetes.io/custom-endpoints: '[{"api":"","path":"","port":"","names":""}]'
        pod.alpha.kubernetes.io/initialized: "true"
      creationTimestamp: null
      labels:
        app: obs-statefulset-example
    spec:
      affinity: {}
      containers:	
        image: nginx:latest
        imagePullPolicy: Always
        name: container-0
        volumeMounts:
        - mountPath: /tmp
          name: pvc-obs-example
      imagePullSecrets:
      - name: default-secret
      volumes:
        - name: pvc-obs-example
          persistentVolumeClaim:
            claimName: cce-obs-demo

**Table 1** Key parameters
Parameter	Description
replicas	Number of pods.
name	Name of the created workload.
image	Image used by the workload.
mountPath	Mount path in the container.
serviceName	Service corresponding to the workload. For details about how to create a Service, see Creating a StatefulSet.
claimName	Name of an existing PVC.