本篇内容主要讲解“如何在docker中安装mysql并搭建主从复制”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“如何在docker中安装mysql并搭建主从复制”吧!
在docker中搭建一主两从的mysql复制环境，步骤如下：
1.docker mysql的安装
[root@localhost docker]# docker search mysql
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
mysql MySQL is a widely used, open-source relati... 4306 [OK]
mysql/mysql-server Optimized MySQL Server Docker images. Crea... 294 [OK]
centurylink/mysql Image containing mysql. Optimized to be li... 51 [OK]
zabbix/zabbix-server-mysql Zabbix Server with MySQL database support 39 [OK]
zabbix/zabbix-web-nginx-mysql Zabbix frontend based on Nginx web-server ... 21 [OK]
imega/mysql Size: 149 MB, alpine:3.5, Mysql Server: 10... 11 [OK]
appcontainers/mysql Centos/Debian Based Customizable MySQL Con... 8 [OK]
marvambass/mysql MySQL Server based on Ubuntu 14.04 7 [OK]
zabbix/zabbix-proxy-mysql Zabbix proxy with MySQL database support 7 [OK]
bitnami/mysql Bitnami MySQL Docker Image 5 [OK]
dnhsoft/mysql-utf8 Inherits the official MySQL image configur... 5 [OK]
debezium/example-mysql Example MySQL database server with a simpl... 4 [OK]
frodenas/mysql A Docker Image for MySQL 3 [OK]
alterway/mysql Docker Mysql 3 [OK]
yfix/mysql Yfix docker built mysql 2 [OK]
drupaldocker/mysql MySQL for Drupal 2 [OK]
coscale/mysql CoScale custom configuration of the offici... 1 [OK]
lysender/mysql MySQL base image using Ubuntu 16.04 Xenial 1 [OK]
tozd/mysql MySQL (MariaDB fork) Docker image. 1 [OK]
projectomakase/mysql Docker image for MySQL 0 [OK]
1maa/mysql MySQL database 0 [OK]
datajoint/mysql MySQL image pre-configured to work smoothl... 0 [OK]
captomd/mysql CaptoMD mysql configuration 0 [OK]
cloudposse/mysql Improved `mysql` service with support for ... 0 [OK]
nanobox/mysql MySQL service for nanobox.io 0 [OK]
nanobox/mysql MySQL service for nanobox.io 0 [OK]
[root@localhost docker]# docker pull mysql:5.7
5.7: Pulling from library/mysql
cd0a524342ef: Downloading 21.63 MB/52.55 MB
d9c95f06c17e: Download complete
46b2d578f59a: Download complete
10fbc2bcc6e9: Download complete
91b1a29c3956: Download complete
5bf9316bd602: Download complete
69bd23f08b55: Download complete
4fb778132e94: Downloading 18.38 MB/78.96 MB
6913628d7744: Download complete
a477f36dc2e0: Download complete
c954124ae935: Download complete
2.创建并运行三个mysql容器
docker run -p 3306:3306 --name master -v /app/mysql/conf/my_master.cnf:/etc/mysql/my.cnf -v /app/mysql/master:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
docker run -p 3307:3306 --name slave1 -v /app/mysql/conf/my_slave1.cnf:/etc/mysql/my.cnf -v /app/mysql/slave1:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
docker run -p 3308:3306 --name slave2 -v /app/mysql/conf/my_slave2.cnf:/etc/mysql/my.cnf -v /app/mysql/slave2:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
3.在host上安装mysql客户端
[root@localhost ~]# yum --enablerepo=mysql57-community clean metadata
[root@localhost ~]# yum install -y mysql-community-client
4.连接到docker上的mysql
[root@localhost mysql]# mysql -uroot -p -h227.0.0.1 -P3306
5.连接到docker的mysql容器
docker exec -it master bash
分别查看三个容器的ip
172.17.0.2,172.17.0.3，172.17.0.4
6.配置主从复制关系
#在主库172.17.0.2上创建用户
mysql> CREATE USER 'repl'@'%' IDENTIFIED BY 'repl';
Query OK, 0 rows affected (0.11 sec)
mysql> GRANT REPLICATION SLAVE ON *.* TO 'repl'@'%';
Query OK, 0 rows affected (0.05 sec)
#查看主库日志位置
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000003 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.08 sec)
#分别在两个从库上启动复制
mysql> CHANGE MASTER TO
-> MASTER_HOST='172.17.0.2',
-> MASTER_PORT=3306,
-> MASTER_USER='repl',
-> MASTER_PASSWORD='repl',
-> MASTER_LOG_FILE='mysql-bin.000003',
-> MASTER_LOG_POS=154;
Query OK, 0 rows affected, 1 warning (0.57 sec)
mysql> start slave;
Query OK, 0 rows affected (0.03 sec)
到此，相信大家对“如何在docker中安装mysql并搭建主从复制”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
