K8s中MySQL 数据持久化存储的实现

apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-pv
  labels:
    pv: pv-test
spec:
  accessModes:
    - ReadWriteOnce
  capacity:
    storage: 1Gi
  persistentVolumeReclaimPolicy: Retain
  storageClassName: nfs
  nfs:
    path: /home/data/app
    server: 192.168.56.160

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
  storageClassName: nfs
  selector:
    matchLabels:
      pv: pv-test

kubectl apply -f mysql-pv.yml
kubectl apply -f mysql-pvc.yml

kubectl get pv,pvc

apiVersion: v1
kind: Service
metadata:
  name: mysql
spec:
  selector:
    app: mysql
  ports:
    - protocol: TCP
      port: 3306
      targetPort: 3306
      nodePort: 31306
  type: NodePort
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
  labels:
    app: mysql-test
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql-test
        image: mysql:5.7
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: Zhurs@123
        ports:
        - containerPort: 3306
        volumeMounts:
        - mountPath: "/var/lib/mysql"
          name: mysql-data
      volumes:
      - name: mysql-data
        persistentVolumeClaim:
          claimName: mysql-pvc

kubectl exec -it mysql-574654d66c-hhvxc -- mysql -uroot -pZhurs@123

mysql> create database testdb;
mysql> use testdb;
mysql> create table t1(id int);
mysql> insert into t1 values(12);
mysql> select * from t1;

kubectl get pod -o wide

init 0

kubectl exec -it mysql-574654d66c-jst7g -- mysql -uroot -pZhurs@123

yum -y install rpcbind
yum -y install nfs-utils

systemctl start nfs-server
systemctl enable nfs-server
systemctl start rpcbind
systemctl enable rpcbind