kubernetes-yaml/examples/mysql/mysql-8-cluster.yaml

---

# 创建 Namespace
apiVersion: v1
kind: Namespace
metadata:
  name: hty1024-db

---

# 创建 StorageClass
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: storage-local-mysql
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: storageClass
provisioner: kubernetes.io/no-provisioner
reclaimPolicy: Retain
volumeBindingMode: WaitForFirstConsumer

---

# 创建 PersistentVolume
## master
apiVersion: v1
kind: PersistentVolume
metadata:
  name: hty1024-db-mysql-pv-master
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: persistentVolume
    app.k8s.hty1024.com/role: master
spec:
  capacity:
    storage: 100Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: storage-local-mysql
  local:
    path: /app/mysql/data/master
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
          - key: node.k8s.hty1024.com/type
            operator: In
            values:
              - app

--- 

## slave
apiVersion: v1
kind: PersistentVolume
metadata:
  name: hty1024-db-mysql-pv-slave
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: persistentVolume
    app.k8s.hty1024.com/role: slave
spec:
  capacity:
    storage: 100Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: storage-local-mysql
  local:
    path: /app/mysql/data/slave
  nodeAffinity:
    required:
      nodeSelectorTerms:
        - matchExpressions:
          - key: node.k8s.hty1024.com/type
            operator: In
            values:
              - app

---

# 创建 PersistentVolumeClaim
## master
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: hty1024-db-mysql-pvc-master
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: persistentVolumeClaim
    app.k8s.hty1024.com/role: master
spec:
  resources:
    requests: 
      storage: 100Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  storageClassName: storage-local-mysql

--- 

## slave
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: hty1024-db-mysql-pvc-slave
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: persistentVolumeClaim
    app.k8s.hty1024.com/role: slave
spec:
  resources:
    requests:
      storage: 100Gi
  volumeMode: Filesystem
  accessModes:
    - ReadWriteOnce
  storageClassName: storage-local-mysql

---

# 创建 ConfigMap
## master
### my.cnf
apiVersion: v1
kind: ConfigMap
metadata:
  name: hty1024-db-mysql-cm-master
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: configMap
    app.k8s.hty1024.com/role: master
data:
  my.cnf: |
    [mysqld]
    max_connections = 1000
    character-set-server = utf8mb4
    collation-server = utf8mb4_unicode_ci

    server-id = 1
    report_host = master

    log_bin = master-bin
    log_error = master-bin.err
    binlog_format = mixed
    binlog_expire_logs_seconds = 604800
    max_binlog_size = 1G

    binlog-ignore-db = mysql
    binlog-ignore-db = sys
    binlog-ignore-db = information_schema
    binlog-ignore-db = performance_schema

--- 

### init.sql
apiVersion: v1
kind: ConfigMap
metadata:
  name: hty1024-db-mysql-cm-master-init
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: configMap
    app.k8s.hty1024.com/role: master
data:
  init.sql: |
    create user 'replication'@'%' identified by '123456';
    grant replication slave, replication client on *.* to 'replication'@'%';
    show grants for 'replication'@'%';
    flush privileges;

--- 

## slave
### my.cnf
apiVersion: v1
kind: ConfigMap
metadata:
  name: hty1024-db-mysql-cm-slave
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: configMap
    app.k8s.hty1024.com/role: slave
data:
  my.cnf: |
    [mysqld]
    max_connections = 1000
    character-set-server = utf8mb4
    collation-server = utf8mb4_unicode_ci

    server-id = 2
    report_host = slave

    replicate_ignore_db = mysql
    replicate_ignore_db = sys
    replicate_ignore_db = information_schema
    replicate_ignore_db = performance_schema

---

### init.sql
apiVersion: v1
kind: ConfigMap
metadata:
  name: hty1024-db-mysql-cm-slave-init
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: configMap
    app.k8s.hty1024.com/role: slave
data:
  init.sql: |
    change master to master_host='hty1024-db-mysql-service-master.hty1024-db', master_port=3306, master_user='replication', master_password='123456', master_log_file='master-bin.000003', master_log_pos=157, get_master_public_key=1;
    set global sql_slave_skip_counter=1;
    start slave;

---

# 创建 Secret（自定义 MySQL 用户密码）
apiVersion: v1
kind: Secret
metadata:
  name: hty1024-db-mysql-secret
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: secret
type: Opaque
stringData:
  root.key: |
    12345678
  replication.key: |
    123456
immutable: true

---

# 创建 Service
## master
apiVersion: v1
kind: Service
metadata:
  name: hty1024-db-mysql-service-master
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: service
    app.k8s.hty1024.com/role: master
spec:
  type: ClusterIP
  ports:
    - port: 3306
      targetPort: 3306
  selector:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: pod
    app.k8s.hty1024.com/role: master

---

## slave
apiVersion: v1
kind: Service
metadata:
  name: hty1024-db-mysql-service-slave
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: service
    app.k8s.hty1024.com/role: slave
spec:
  type: ClusterIP
  ports:
    - port: 3306
      targetPort: 3306
  selector:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: pod
    app.k8s.hty1024.com/role: slave

---

# 创建 StatefulSet
## master
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: hty1024-db-mysql-statefulset-master
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: statefulSet
    app.k8s.hty1024.com/role: master
spec:
  replicas: 1
  minReadySeconds: 30
  selector:
    matchLabels:
      app.k8s.hty1024.com/env: prod
      app.k8s.hty1024.com/type: db
      app.k8s.hty1024.com/name: mysql
      app.k8s.hty1024.com/version: 8.0.39
      app.k8s.hty1024.com/resources: pod
      app.k8s.hty1024.com/role: master
  template:
    metadata:
      labels:
        app.k8s.hty1024.com/env: prod
        app.k8s.hty1024.com/type: db
        app.k8s.hty1024.com/name: mysql
        app.k8s.hty1024.com/version: 8.0.39
        app.k8s.hty1024.com/resources: pod
        app.k8s.hty1024.com/role: master
    spec:
      terminationGracePeriodSeconds: 60
      volumes:
        - name: localtime
          hostPath:
            path: /etc/localtime
        - name: hty1024-db-mysql-data-master
          persistentVolumeClaim:
            claimName: hty1024-db-mysql-pvc-master
        - name: hty1024-db-mysql-conf-master
          configMap:
            name: hty1024-db-mysql-cm-master
            items:
              - key: my.cnf
                path: my.cnf
        - name: hty1024-db-mysql-conf-master-init
          configMap: 
            name: hty1024-db-mysql-cm-master-init
            items:
              - key: init.sql
                path: init.sql
        - name: hty1024-db-mysql-pwd
          secret:
            secretName: hty1024-db-mysql-secret
      containers:
        - name: mysql
          image: mysql:8.0.39
          ports:
            - name: tcp
              containerPort: 3306
          volumeMounts:
            - name: localtime
              mountPath: /etc/localtime
              readOnly: true
            - name: hty1024-db-mysql-data-master
              mountPath: /var/lib/mysql
            - name: hty1024-db-mysql-conf-master
              mountPath: /etc/mysql/conf.d/
            - name: hty1024-db-mysql-conf-master-init
              mountPath: /docker-entrypoint-initdb.d/
            - name: hty1024-db-mysql-pwd
              mountPath: /tmp/secret-volume
              readOnly: true
          env:
            - name: MYSQL_ROOT_PASSWORD_FILE
              value: "/tmp/secret-volume/root.key"
            - name: MYSQL_REPLICATION_MODE
              value: "master"
            - name: MYSQL_REPLICATION_USER
              value: "replication"
            - name: MYSQL_REPLICATION_PASSWORD_FILE
              value: "/tmp/secret-volume/replication.key"
      nodeSelector:
        node.k8s.hty1024.com/type: app

---

## slave
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: hty1024-db-mysql-statefulset-slave
  namespace: hty1024-db
  labels:
    app.k8s.hty1024.com/env: prod
    app.k8s.hty1024.com/type: db
    app.k8s.hty1024.com/name: mysql
    app.k8s.hty1024.com/version: 8.0.39
    app.k8s.hty1024.com/resources: statefulSet
    app.k8s.hty1024.com/role: slave
spec:
  replicas: 1
  minReadySeconds: 30
  selector:
    matchLabels:
      app.k8s.hty1024.com/env: prod
      app.k8s.hty1024.com/type: db
      app.k8s.hty1024.com/name: mysql
      app.k8s.hty1024.com/version: 8.0.39
      app.k8s.hty1024.com/resources: pod
      app.k8s.hty1024.com/role: slave
  template:
    metadata:
      labels:
        app.k8s.hty1024.com/env: prod
        app.k8s.hty1024.com/type: db
        app.k8s.hty1024.com/name: mysql
        app.k8s.hty1024.com/version: 8.0.39
        app.k8s.hty1024.com/resources: pod
        app.k8s.hty1024.com/role: slave
    spec:
      terminationGracePeriodSeconds: 60
      volumes:
        - name: localtime
          hostPath:
            path: /etc/localtime
        - name: hty1024-db-mysql-data-slave
          persistentVolumeClaim:
            claimName: hty1024-db-mysql-pvc-slave
        - name: hty1024-db-mysql-conf-slave
          configMap:
            name: hty1024-db-mysql-cm-slave
            items:
              - key: my.cnf
                path: my.cnf
        - name: hty1024-db-mysql-conf-slave-init
          configMap: 
            name: hty1024-db-mysql-cm-slave-init
            items:
              - key: init.sql
                path: init.sql
        - name: hty1024-db-mysql-pwd
          secret:
            secretName: hty1024-db-mysql-secret
      containers:
        - name: mysql
          image: mysql:8.0.39
          ports:
            - name: tcp
              containerPort: 3306
          volumeMounts:
            - name: localtime
              mountPath: /etc/localtime
              readOnly: true
            - name: hty1024-db-mysql-data-slave
              mountPath: /var/lib/mysql
            - name: hty1024-db-mysql-conf-slave
              mountPath: /etc/mysql/conf.d/
            - name: hty1024-db-mysql-conf-slave-init
              mountPath: /docker-entrypoint-initdb.d/
            - name: hty1024-db-mysql-pwd
              mountPath: /tmp/secret-volume
              readOnly: true
          env:
            - name: MYSQL_ROOT_PASSWORD_FILE
              value: "/tmp/secret-volume/root.key"
            - name: MYSQL_REPLICATION_MODE
              value: "slave"
      nodeSelector:
        node.k8s.hty1024.com/type: app