Docker安装mysql5.7并且配置主从复制

转载请表明出处 https://blog.csdn.net/Amor_Leo/article/details/85177001 谢谢

拉取mysql镜像

docker pull mysql:5.7 

创建文件docker.cnf

mysql主机(192.168.0.109)

创建文件夹

mkdir /usr/local/mysql
cd mysql/
mkdir conf data

创建docker.cnf

vim /usr/local/mysql/conf/docker.cnf

• 具体添加

[mysqld]
server-id=1
log-bin=master-bin  #只是读写,就只要主库配置即可.如果要做主从切换，那么主库和从库都需要开启.
skip-host-cache
skip-name-resolve
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8
[mysql]  
default-character-set=utf8
[client]  
default-character-set=utf8

mysql从机(192.168.0.110)

创建文件夹

mkdir /usr/local/mysql
cd mysql/
mkdir conf data

创建docker.cnf

vim /usr/local/mysql/conf/docker.cnf

• 具体添加

[mysqld]
server-id=2
skip-host-cache
skip-name-resolve
collation-server = utf8_unicode_ci
init-connect='SET NAMES utf8'
character-set-server = utf8
[mysql]  
default-character-set=utf8
[client]  
default-character-set=utf8

创建容器并运行

mysql主机

docker run --name mysqlmaster -p 3306:3306 -v /usr/local/mysql/conf:/etc/mysql/conf.d -v /usr/local/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root --privileged=true -d mysql:5.7

mysql从机

docker run   --name mysqlslave  -p 3306:3306  -v /usr/local/mysql/conf:/etc/mysql/conf.d -v /usr/local/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root  --privileged=true -d mysql:5.7

开启主从复制

mysql主机

• 进入mysql容器

  docker exec -it mysqlmaster /bin/bash
  

• 启动mysql

  mysql -uroot -proot
  

• 创建用户

  create user  'lhl'@'%'  identified by 'root';
  

• 权限

  grant replication slave on *.* to 'lhl'@'%';
  

• 刷新权限

  flush privileges;
  

• 查看状态

  show master status;
  

  

mysql从机

• 进入mysql容器

  docker exec -it mysqlslave /bin/bash 
  

• 启动mysql

  mysql -uroot -proot
  

• 执行主从

  change master to master_host='192.168.0.109',master_port=3306,master_user='lhl',master_password='root',master_log_file='master-bin.000003',master_log_pos=745;
  

  • 如果报错,执行下面命令并再次执行上面的命令

   stop slave;
  

• 开启复制

  start slave;
  

• 查看主从是否成功

  show slave status \G;
  

  以下两个都为yes就代表成功了

    Slave_IO_Running: Yes 
    Slave_SQL_Running: Yes 
    说明主从成功