标签：主从复制 Linux MySQL program master mysql mysqld docker
Linux下基于Docker搭建MySQL主从复制
拉取 MySQL 容器镜像docker pull mysql:5.7这里我使用的是 5.7 版本，如果你想要拉取最新版本的镜像，可以使用：
docker pull mysql:latest
docker images创建 MySQL 容器 可提前完成配置文件并 挂载到/data/mysql,准备好mysqld.cnf文件放到 master、slave1、slave2目录 master目录的mysqld.cnf
REPOSITORY TAG IMAGE ID CREATED SIZE mysql 5.7 f6509bac4980 4 days ago 373MB
# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2.0, # as published by the Free Software Foundation. # # This program is also distributed with certain software (including # but not limited to OpenSSL) that is licensed under separate terms, # as designated in a particular file or component or in included license # documentation. The authors of MySQL hereby grant you an additional # permission to link the program and your derivative works with the # separately licensed software that they have included with MySQL. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License, version 2.0, for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # The MySQL Server configuration file. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html [mysqld] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock datadir = /var/lib/mysql #log-error = /var/log/mysql/error.log # By default we only accept connections from localhost #bind-address = 127.0.0.1 # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 log-bin=mysql-bin server-id=2
slave1的mysqld.cnf文件 ，注意 server-id 不能相同
# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2.0, # as published by the Free Software Foundation. # # This program is also distributed with certain software (including # but not limited to OpenSSL) that is licensed under separate terms, # as designated in a particular file or component or in included license # documentation. The authors of MySQL hereby grant you an additional # permission to link the program and your derivative works with the # separately licensed software that they have included with MySQL. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License, version 2.0, for more details. # # You should have received a copy of the GNU General Public License # along with this progra
# Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License, version 2.0, # as published by the Free Software Foundation. # # This program is also distributed with certain software (including # but not limited to OpenSSL) that is licensed under separate terms, # as designated in a particular file or component or in included license # documentation. The authors of MySQL hereby grant you an additional # permission to link the program and your derivative works with the # separately licensed software that they have included with MySQL. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License, version 2.0, for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # The MySQL Server configuration file. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html [mysqld] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock datadir = /var/lib/mysql #log-error = /var/log/mysql/error.log # By default we only accept connections from localhost #bind-address = 127.0.0.1 # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 server-id=41 default-storage-engine=MyISAM
m; if not, write to the Free Software # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA # # The MySQL Server configuration file. # # For explanations see # http://dev.mysql.com/doc/mysql/en/server-system-variables.html [mysqld] pid-file = /var/run/mysqld/mysqld.pid socket = /var/run/mysqld/mysqld.sock datadir = /var/lib/mysql #log-error = /var/log/mysql/error.log # By default we only accept connections from localhost #bind-address = 127.0.0.1 # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 server-id=3 default-storage-engine=MyISAM
slave2目录的 mysqld.cnf文件如下
创建主数据库容器
docker run --name mysql-master -p 3306:3306 -v /data/mysql/master:/etc/mysql/mysql.conf.d -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7创建从数据库容器
docker run --name mysql-slave1 -p 3307:3306 -v /data/mysql/slave1:/etc/mysql/mysql.conf.d -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7 docker run --name mysql-slave2 -p 3308:3306 -v /data/mysql/slave2:/etc/mysql/mysql.conf.d -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7
这里我们分别使用了 3306 和 3307、3308 端口
配置主服务 首先，进入容器：docker run --name mysql-master -p 3307:3306 -v连接 MySQL
mysql -u root -p123456修改 root 可以通过任何客户端连接
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
修改 MySQL 配置文档 /etc/mysql/mysql.conf.d/mysqld.cnf ，在 [mysqld] 段添加以下配置：如果上面挂载了这步可以忽略
log-bin=mysql-bin //[必须]启用二进制日志 server-id=2 //[必须]服务器标识ID，每台服务器唯一重启Master服务器
docker restart mysql-maser再次进入maser容器
docker exec -it mysql-master /bin/bash连接 MySQL
mysql -u root -p123456查看数据库状态：
mysql> show master status;+------------------+----------+--------------+------------------+--------------- ----+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+--------------- ----+ | mysql-bin.000004 | 154 | | | | +------------------+----------+--------------+------------------+--------------- ----+ 记住上面的 file 和position 配置从服务器 首先，进入容器：
docker exec -it mysql-slave1 /bin/bash连接 MySQL
mysql -u root -p123456修改 root 可以通过任何客户端连接（默认root用户可以对从数据库进行编辑的）
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';修改配置文件mysqld.cnf
server-id=3 default-storage-engine=MyISAM # 修改引擎为MyISAM 【选择配置不是必须的，后面有说明】配置从同步主服务数据,执行如下SQL
change master to master_host='192.168.2.130', master_user='root', master_log_file='mysql-bin.000004', master_log_pos=154, master_port=3306, master_password='123456';启动slave服务
mysql>start slave;查看slave状态
show slave status \G;
出现两个yes代表主从配置成功
测试主从搭建结果 在 master 容器中创建一张 user 表；Create Database TestUser; Use TestUser;
mysql> CREATE TABLE `user` ( `user_id` bigint(20) AUTO_INCREMENT, `username` varchar(30) NOT NULL, `password` varchar(30) DEFAULT NULL, PRIMARY KEY (`user_id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8;然后在 slave 容器查看：
mysql> show tables; +----------------+ | Tables_in_test | +----------------+ | user | +----------------+ 1 row in set (0.00 sec)目前看到数据表已经同步过来 在 master 服务器 user 表插入一条数据：
mysql> insert into user(username, password) values ('feng',
'123456');
然后看看 slave 服务器是否有同步(也可以navigat查看)
这里我们只是测试，所以把数据表也同步过来了。一般情况下数据表是不同步的，先各自
在 master 和 salve 创建好。 因为一般来说 master 和 slave 的表的存储引擎是不一样的，
master 一般用的是 InnoDB ，因为它要写数据比较多。 而 slave 表一般用的是 MyISAM 引擎，
因为它是没有写数据操作，只有读，用 MyISAM 引擎能大大节省资源，速度也会快一些。
★ 重点：不要在从服务执行数据的DML操作，一旦执行成功MySQL主从直接就被破坏掉，需要再
次执行 change sql语句重新恢复
停止全部容器以及删除全部容器
docker stop $(docker ps -q) & docker rm $(docker ps -aq)
标签：主从复制,Linux,MySQL,program,master,mysql,mysqld,docker 来源： https://www.cnblogs.com/tianzhike/p/15812396.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。