helm安装mysql8.0集群模式

1.安装operator：MysqlCluster

2.使用operator安装mysql8.0集群

CREATE USER 'root' IDENTIFIED BY '134er6';
ALTER USER 'root'@'%' IDENTIFIED BY 'Qwer#@!';

apiVersion: mysql.radondb.com/v1alpha1
kind: MysqlCluster
metadata:
  name: mysql-cluster
spec:
  replicas: 3
  mysqlVersion: "8.0"
  # the backupSecretName specify the secret file name which store S3 information,
  # if you want S3 backup or restore, please create backup_secret.yaml, uncomment below and fill secret name:
  # backupSecretName: 
  
  # if you want create mysqlcluster from S3, uncomment and fill the directory in S3 bucket below:
  # restoreFrom: 
  
  mysqlOpts:
    image: harbor.goldwind.com/library/percona/percona-server:8.0.25
    user: project_user
    password: wHrr*48+M
    database: project_database
    ## tokudb is not supported in mysql8.
    # initTokuDB: false

    # A simple map between string and string.
    # Such as:
    #    mysqlConf:
    #      expire_logs_days: "7"
    mysqlConf: {}

    resources:
      requests:
        cpu: 256m
        memory: 256Mi
      limits:
        cpu: 1000m
        memory: 1Gi

  xenonOpts:
    image: harbor.goldwind.com/library/radondb/xenon:v2.3.0
    admitDefeatHearbeatCount: 5
    electionTimeout: 10000

    resources:
      requests:
        cpu: 50m
        memory: 128Mi
      limits:
        cpu: 100m
        memory: 256Mi

  metricsOpts:
    enabled: false
    image: harbor.goldwind.com/library/prom/mysqld-exporter:v0.12.1

    resources:
      requests:
        cpu: 10m
        memory: 32Mi
      limits:
        cpu: 100m
        memory: 128Mi

  podPolicy:
    imagePullPolicy: IfNotPresent
    sidecarImage: harbor.goldwind.com/library/radondb/mysql80-sidecar:v2.3.0
    busyboxImage: harbor.goldwind.com/library/busybox:1.32

    slowLogTail: false
    auditLogTail: false

    labels: {}
    annotations: {}
    affinity: 
      podAntiAffinity:
        requiredDuringSchedulingIgnoredDuringExecution:
        - labelSelector:
            matchExpressions:
            - key: app.kubernetes.io/name
              operator: In
              values:
              - mysql
          topologyKey: "kubernetes.io/hostname"
    priorityClassName: ""
    tolerations: []
    schedulerName: ""
    # extraResources defines quotas for containers other than mysql or xenon.
    extraResources:
      requests:
        cpu: 10m
        memory: 32Mi
      limits:
        cpu: 100m
        memory: 125Mi

  persistence:
    enabled: true
    accessModes:
    - ReadWriteOnce
    storageClass: "managed-nfs-storage"
    size: 20Gi

3.创建root密码

此operator只支持创建项目账户及数据库，若要使用管理员权限，可以在rancher中service的leader svc中找到mster pod然后执行root改密码的操作

ALTER USER 'root'@'%' IDENTIFIED BY 'Qwer#@!';

4.创建主从节点：leader和follower的nodeport svc