kubernetes之statefulset搭建MySQL集群

kubectl create namespace mysql

apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql-config
  namespace: mysql
data:
  my.cnf: |
    [mysqld]
    server-id=1
    log-bin=mysql-bin
    binlog_format=row
    innodb_flush_log_at_trx_commit=1

apiVersion: v1
kind: Secret
metadata:
  name: mysql-secret
  namespace: mysql
type: Opaque
data:
  username: dXNlcm5hbWU=
  password: cGFzc3dvcmQ=

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql
  namespace: mysql
spec:
  replicas: 3
  serviceName: mysql-headless
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql
        image: mysql:5.7
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-secret
              key: password
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
        - name: mysql-config
          mountPath: /etc/mysql/conf.d/my.cnf
          subPath: my.cnf
      volumes:
      - name: mysql-data
        persistentVolumeClaim:
          claimName: mysql-data
      - name: mysql-config
        configMap:
          name: mysql-config
  volumeClaimTemplates:
  - metadata:
      name: mysql-data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 10Gi

apiVersion: v1
kind: Service
metadata:
  name: mysql-headless
  namespace: mysql
spec:
  ports:
  - name: mysql
    port: 3306
  clusterIP: None
  selector:
    app: mysql

kubectl exec -it mysql-0 --namespace=mysql -- /bin/bash
mysql -u root -p
create database testdb;
use testdb;
create table testtable (id int, name varchar(255));
insert into testtable values (1, 'test');
exit;