(kubectl) Creating a StatefulSet Mounted with an SFS Turbo Volume

Scenario

CCE allows you to use an existing SFS Turbo volume to create a StatefulSet.

Prerequisites

You have created a CCE cluster and installed the FlexVolume plug-in (storage-driver) in the cluster.

Notes and Constraints

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

Procedure

1. Create an SFS Turbo volume and record the volume name.
2. Use kubectl to connect to the cluster. For details, see Connecting to a Cluster Using kubectl.
3. Create a YAML file for creating the workload. Assume that the file name is efs-statefulset-example.yaml.

   touch efs-statefulset-example.yaml

   vi efs-statefulset-example.yaml

   Example YAML:

   apiVersion: apps/v1
   kind: StatefulSet
   metadata:
     name: efs-statefulset-example
     namespace: default
   spec:
     replicas: 1
     selector:
       matchLabels:
         app: efs-statefulset-example
     template:
       metadata:
         annotations:
           metrics.alpha.kubernetes.io/custom-endpoints: '[{"api":"","path":"","port":"","names":""}]'
           pod.alpha.kubernetes.io/initialized: 'true'
         labels:
           app: efs-statefulset-example
       spec:
         containers:
           - image: 'nginx:1.0.0'
             name: container-0
             resources:
               requests: {}
               limits: {}
             env:
               - name: PAAS_APP_NAME
                 value: efs-statefulset-example
               - name: PAAS_NAMESPACE
                 value: default
               - name: PAAS_PROJECT_ID
                 value: b18296881cc34f929baa8b9e95abf88b
             volumeMounts:
               - name: efs-statefulset-example
                 mountPath: /tmp
                 readOnly: false
                 subPath: ''
         imagePullSecrets:
           - name: default-secret
         terminationGracePeriodSeconds: 30
         volumes:
           - persistentVolumeClaim:
               claimName: cce-efs-import-jnr481gm-3y5o
             name: efs-statefulset-example
         affinity: {}
         tolerations:
           - key: node.kubernetes.io/not-ready
             operator: Exists
             effect: NoExecute
             tolerationSeconds: 300
           - key: node.kubernetes.io/unreachable
             operator: Exists
             effect: NoExecute
             tolerationSeconds: 300
     podManagementPolicy: OrderedReady
     serviceName: test
     updateStrategy:
       type: RollingUpdate

   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.

   

   spec.template.spec.containers.volumeMounts.name and spec.template.spec.volumes.name must be consistent because they have a mapping relationship.

4. Create the StatefulSet.

   kubectl create -f efs-statefulset-example.yaml