1、首先创建两个文件/etc/my-m.cnf(主库配置) 、/etc/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_timestamplog-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
bind-address = 0.0.0.0
#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
以及修改:
bind-address = 0.0.0.0
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_timestamplog-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
bind-address = 0.0.0.0
#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
以及修改:
bind-address = 0.0.0.0
2、OK,有了配置文件,就可以启动MySQL了,先创建并启动主库。
sudo docker run -d -e MYSQL_ROOT_PASSWORD=wht111 --name mysql-master /
-v /etc/my-m.cnf:/etc/mysql/my.cnf -p 3307:3306 mysql
3、创建并启动从库。
sudo docker run -d -e MYSQL_ROOT_PASSWORD=wht111 --name mysql-slave /
-v /etc/my-s.cnf:/etc/mysql/my.cnf -p 3308:3306 mysql
4、查看主库ip地址,连接主库,并创建一个用户用来同步数据:
sudo docker inspect -f "{{.NetworkSettings.IPAddress}}" mysql-maste
mysql -h 172.17.0.2 -uroot -pwht111;
1
GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';
1
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。
6、以上面同样的方法连接到从库,运行以下命令,设置主库链接:
change master to master_host='172.17.0.2',master_user='backup',master_password='123456', master_log_file='mysql-bin.000003',master_log_pos=431,master_port=3306;
7、启动同步,并查看同步状态,查看复制线程:
start slave;
show slave status;
show processlist;
8、登录主库,并查看复制线程:
show processlist;
如果看到Master has sent all binlog to slave; waiting for more updates 什么的就成功了,现在在主库上的修改,都会同步到从库上。