# 部署 MySQL 两节点互为主从+高可用

- 在每台服务器上执行如下操作
- 按实际环境修改
    - docker-compose.yml
    - keepalived/conf/keepalived.conf
    - mysql/my.cnf

- 创建目录
    ```
    grep '\<source:' docker-compose.yml | cut -d: -f2 | xargs mkdir -p
    ```

- 启动
    ```
    docker-compose up -d
    ```

- 查看日志，直至出现 "MySQL is ready for connections."
    ```
    docker-compose logs mysql
    ```

- 配置 mysql 互相同步
    ```
    # 进入mysql终端
    docker exec -ti mysql mysql

    # 设置同步源
    CHANGE REPLICATION SOURCE TO 
        SOURCE_HOST = '对方 host',
        SOURCE_PORT = 3306,
        SOURCE_USER = 'replicator',
        SOURCE_PASSWORD = 'China_19$(10)!',
        SOURCE_AUTO_POSITION = 1;

    # 启动同步
    START REPLICA;

    # 查看同步状态
    SHOW REPLICA STATUS\G
    # 如果输出Replica_IO_Running: Yes和Replica_SQL_Running: Yes，则同步正常

    # 退出 mysql
    quit
    ```

- 在其中一台 mysql 服务器上导入初始数据