如何在docker中安装mysql并搭建主从复制

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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。下面就让丸趣 TV 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)

# 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！这里是丸趣 TV 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！

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