k8s启动mysql主从的过程

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启动两个docker ，服务为mysql主从模式；

首先需要构建两个docker，使用mysql5.7的镜像作为基础镜像

1. mysql-master Dockerfile

FROM mysql:latestRUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/shanghai" >> /etc/timezoneCOPY mysqld.cnf /etc/mysql/mysql.conf.d/mysqld.cnfCOPY entrypoint.sh /COPY init-master.sh /docker-entrypoint-initdb.d/

在当前目录下执行如下命令：

docker built -t mysql-master:v1.0 .

其他文件请参照文章末尾的GitHub链接地址

2. mysql-slave Dockerfile

FROM mysql:latestRUN cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && echo "Asia/shanghai" >> /etc/timezoneCOPY mysqld.cnf /etc/mysql/mysql.conf.d/COPY entrypoint.sh /COPY slave-init.sh /docker-entrypoint-initdb.d/

在当前目录下执行如下命令：

docker built -t mysql-slave:v1.0 .

其他文件请参照文章末尾的GitHub链接地址

3. 执行k8s 的yaml文件 master, 文件名：mysql-master.yaml

确保本地有 /data/mysql_data目录

apiVersion: v1kind: Podmetadata:  name: master-tdbwv  labels:    name: master-tdbwvspec:  volumes:    - name: data      hostPath:        path: /data/mysql_data  containers:    - name: master-tdbwv      image: mysql-master:v1.0      env:        - name: MYSQL_ROOT_PASSWORD          value: uggTKd3xsIMM        - name: MYSQL_REPLICATION_USER          value: repl        - name: MYSQL_REPLICATION_PASSWORD          value: RQfUjBff      ports:        - containerPort: 3306          name: master-tdbwv      volumeMounts:        - name: data          mountPath: /var/lib/mysql      resources:          limits:            cpu: 2            memory: 200Mi  nodeName: localhost---apiVersion: v1kind: Servicemetadata:  name: master-tdbwv  labels:    name: master-tdbwvspec:  type: NodePort  ports:    - port: 3306            nodePort:   selector:    name: master-tdbwv

4. 执行k8s 的yaml文件 slave, 文件名：mysql-slave.yaml

确保本地有 /data/mysql_slave_data目录

apiVersion: v1kind: Podmetadata:  name: slave-ncrxq  labels:    name: slave-ncrxqspec:  volumes:    - name: data      hostPath:        path: /data/mysql_slave_data  containers:    - name: slave-ncrxq      image: mysql-slave:v1.0      env:        - name: MYSQL_ROOT_PASSWORD          value: uggTKd3xsIMM        - name: MYSQL_REPLICATION_USER          value: repl        - name: MYSQL_REPLICATION_PASSWORD          value: RQfUjBff        - name: MYSQL_MASTER_SERVICE_HOST          value: 127.0.0.1      ports:        - containerPort: 3306          name: slave-ncrxq      volumeMounts:        - name: data          mountPath: /var/lib/mysql      resources:          limits:            cpu: 2            memory: 200Mi  nodeName: localhost---apiVersion: v1kind: Servicemetadata:  name: slave-ncrxq  labels:    name: slave-ncrxqspec:  type: NodePort  ports:    - port: 3306            nodePort:   selector:    name: slave-ncrxq

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