docker mysql 主从配置

2016-12-09 09:58:13来源:oschina作者:-外星人-人点击

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


# 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/

主要是这两行,只需要在原来的配置里面加上就行


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

my-s.cnf 内容如下


# 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 = 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,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/

同样,主要的是这两行


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

2、OK,有了配置文件,就可以启动mysql了,先启动主库


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

3、启动从库


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

4、连接主库,并运行以下命令,创建一个用户用来同步数据


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

5、查看主库状态


$ show master status;

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


6、连接到从库,运行以下命令,设置主库链接


$ 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;

7、启动同步


$ start slave;

8、查看同步状态


$ show slave status

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

最新文章

123

最新摄影

微信扫一扫

第七城市微信公众平台