docker搭建mysql读写分离

2. 创建主从数据映射目录

// 创建目录，数据和配置不至于丢失
mkdir -p /usr/local/docker_app/mysql/master/conf.d/
mkdir -p /usr/local/docker_app/mysql/slave/conf.d/

3. 创建master配置文件/usr/local/docker_app/mysql/master/conf.d/my.cnf

vi /usr/local/docker_app/mysql/master/conf.d/my.cnf

　　修改文件配置

[mysqld]
log-bin=master-bin
server-id=1

4. 创建slave配置文件/usr/local/docker_app/mysql/slave/conf.d/my.cnf

vi /usr/local/docker_app/mysql/slave/conf.d/my.cnf

修改文件配置

[mysqld]
log-bin=slave-bin
server-id=2

5.启动master服务

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

6. 启动slave服务

docker run -d --name mysql-slave     -p 3307:3306     -v /usr/local/docker_app/mysql/slave/conf.d/data:/var/lib/mysql     -v /usr/local/docker_app/mysql/slave/conf.d:/etc/mysql/conf.d     -e MYSQL_ROOT_PASSWORD=root     -d mysql:5.7

7. 进入容器修改master 的读写权限

   # 进入容器shell
   $ docker exec -it mysql-master /bin/sh

mysql -uroot -p

// mysql shell
// 用户名：root
// 密码：root
GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘root‘ WITH GRANT OPTION;

   进入容器修改slave的读写权限

# 进入容器shell
$ docker exec -it mysql-slave/bin/sh

//进入mysql
mysql -uroot -p

// mysql shell
// 用户名：root
// 密码：root
GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘%‘ IDENTIFIED BY ‘root‘ WITH GRANT OPTION;

// mysql shell
show master status;

+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| master-bin.000003 |     154  |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+

9. 获取master容器的host

    docker inspect --format=‘{{.NetworkSettings.IPAddress}}‘ mysql-master

10. 进入mysql-slave关联主从模式（自行更改那些参数）

    // mysql shell
    change master to master_host=‘172.17.0.2‘, master_user=‘root‘,master_password=‘root‘, master_log_file=‘master-bin.000003‘,master_log_pos=154;

// mysql shell
// 启用slave
start slave;

查看是否成功

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

11. 测试主从
    在master创建test数据库，再到slave中查看是否存在test库，若存在则基本完成，若未成功检查binlog、master host、position是否正确；目前已经可以给前台使用，只不过要区分读写数据源，挺麻烦！

show databases;

create database test;

docker搭建mysql读写分离

标签：ofo   doc   容器   实例   mic   使用   setting   use   ipa