MYSQL教程Docker mysql 主从配置详解及实例

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本文介绍了MYSQL教程Docker mysql 主从配置详解及实例，希望对您有用。如果有疑问，可以联系我们。

MYSQL应用Docker mysql 主从配置

MYSQL应用1、首先创建两个文件my-m.cnf(主库配置) 、my-s.cnf(从库配置)

MYSQL应用my-m.cnf 内容如下

MYSQL应用
# Copyright (c) 2014,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 as published by
# the Free Software Foundation; version 2 of the License.
#
# 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 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 Community Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
[client]
port    = 3306
socket   = /var/run/mysqld/mysqld.sock
[mysqld_safe]
pid-file  = /var/run/mysqld/mysqld.pid
socket   = /var/run/mysqld/mysqld.sock
nice    = 0
[mysqld]
user    = mysql
pid-file  = /var/run/mysqld/mysqld.pid
socket   = /var/run/mysqld/mysqld.sock
port    = 3306
basedir   = /usr
datadir   = /var/lib/mysql
tmpdir   = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp
log-bin = mysql-bin 
server-id = 1 
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address  = 127.0.0.1
#log-error = /var/log/mysql/error.log
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# * IMPORTANT: Additional settings that can override those from this file!
#  The files must end with '.cnf',otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/

MYSQL应用主要是这两行,只需要在原来的配置里面加上就行

MYSQL应用log-bin = mysql-bin
server-id = 1

MYSQL应用my-s.cnf 内容如下

MYSQL应用
# Copyright (c) 2014,MA 02110-1301 USA
#
# The MySQL Community Server configuration file.
#
# For explanations see
# http://dev.mysql.com/doc/mysql/en/server-system-variables.html
[client]
port    = 3306
socket   = /var/run/mysqld/mysqld.sock
[mysqld_safe]
pid-file  = /var/run/mysqld/mysqld.pid
socket   = /var/run/mysqld/mysqld.sock
nice    = 0
[mysqld]
user    = mysql
pid-file  = /var/run/mysqld/mysqld.pid
socket   = /var/run/mysqld/mysqld.sock
port    = 3306
basedir   = /usr
datadir   = /var/lib/mysql
tmpdir   = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp
log-bin = mysql-bin 
server-id = 2
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#bind-address  = 127.0.0.1
#log-error = /var/log/mysql/error.log
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,otherwise they'll be ignored.
#
!includedir /etc/mysql/conf.d/

MYSQL应用同样,主要的是这两行

MYSQL应用log-bin = mysql-bin
server-id = 2

MYSQL应用2、OK,有了配置文件,就可以启动MySQL了,先启动主库

MYSQL应用$ docker run -d -e MYSQL_ROOT_PASSWORD=admin --name mysql-master -v /soft/my-m.cnf:/etc/mysql/my.cnf -p 3307:3306 mysql

MYSQL应用3、启动从库

MYSQL应用$ docker run -d -e MYSQL_ROOT_PASSWORD=admin --name mysql-slave -v /soft/my-s.cnf:/etc/mysql/my.cnf -p 3308:3306 mysql

MYSQL应用4、连接主库,并运行以下命令,创建一个用户用来同步数据

MYSQL应用$ GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';

MYSQL应用5、查看主库状态

MYSQL应用$ show master status;

MYSQL应用记住File、Position的值,如果没查到数据,请检查第一、第二步,配置问题.
我查出来的是mysql-bin.000004、312

MYSQL应用6、连接到从库,运行以下命令,设置主库链接

MYSQL应用$ change master to master_host='121.32.32.54',master_user='backup',master_password='123456',
master_log_file='mysql-bin.000004',master_log_pos=312,master_port=3307;

MYSQL应用7、启动同步

MYSQL应用$ start slave;

MYSQL应用8、查看同步状态

MYSQL应用$ show slave status

MYSQL应用如果看到Waiting for master send event.. 什么的就成功了,你现在在主库上的修改,都会同步到从库上

MYSQL应用感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

（编辑：李大同）

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