stateful set 學習筆記

一、建立pv

# cat pv.yaml 
kind: PersistentVolume
apiVersion: v1
metadata:
  name: task-pv-volume
  labels:
    type: local
spec:
  capacity:
    storage: 3Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/tmp/data"

二、建立pvc

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: db-mysql-0
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

三、建立svc

apiVersion: v1
kind: Service
metadata:
  name: mysql-service
  labels:
    app: mysql
spec:
  ports:
  - port: 80
    name: my-port
  clusterIP: None
  selector:
    app: mysql

四、建立ss

apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: mysql
  namespace: default
spec:
  serviceName: "mysql-service"
  replicas: 2
  template:
    metadata:
      labels:
        app: mysql
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: mysql
        image: mysql:5.7.14
        ports:
        - containerPort: 3306
          name: my-port
        env:
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
               name: mysql-config
               key: MYSQL_ROOT_PASSWORD
        volumeMounts:
        - name: db
          mountPath: /var/lib/mysql
  volumeClaimTemplates:
  - metadata:
      name: db
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 1Gi

查看結果:

發現 

須要再建立一個pv供pvc綁定，這種靜態建立pv的方法很麻煩。

2、動態建立pv storage class