参与文献 http://blog.csdn.net/qq362228416/article/details/48569293
docker 安装mysql主从备份
下载mysql镜像 我们获取最新镜像
环境准备如下:
服务器: 我的服务器ip: 47.94.175.83
保证3307端口和3308端口没有被占用
在主机上安装docker之后运行 从官网拉取最新镜像
docker pull mysql:latest
准备配置文件:
命令如下:
cd /
touch my-m.cnf
touch my-s.cnf
开始编辑文件
1,首创创两个文件 vi my-m.cnf(主库配置),vi 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 = 3306socket = /var/run/mysqld/mysqld.sock[mysqld_safe]pid-file = /var/run/mysqld/mysqld.pidsocket = /var/run/mysqld/mysqld.socknice = 0[mysqld]user = mysqlpid-file = /var/run/mysqld/mysqld.pidsocket = /var/run/mysqld/mysqld.sockport = 3306basedir = /usrdatadir = /var/lib/mysqltmpdir = /tmplc-messages-dir = /usr/share/mysqlexplicit_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#log-error = /var/log/mysql/error.log# Recommended in standard MySQL setupsql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-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/
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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 = 3306socket = /var/run/mysqld/mysqld.sock[mysqld_safe]pid-file = /var/run/mysqld/mysqld.pidsocket = /var/run/mysqld/mysqld.socknice = 0[mysqld]user = mysqlpid-file = /var/run/mysqld/mysqld.pidsocket = /var/run/mysqld/mysqld.sockport = 3306basedir = /usrdatadir = /var/lib/mysqltmpdir = /tmplc-messages-dir = /usr/share/mysqlexplicit_defaults_for_timestamplog-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 setupsql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES# Disabling symbolic-links is recommended to prevent assorted security riskssymbolic-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/
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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的了,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
如图4所示,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;
记住文件,位置的值,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.000003,436
如图6所示,连接到从库,运行以下命令,设置主库链接
$ change master to master_host='47.94.175.83',master_user='backup',master_password='123456',master_log_file='mysql-bin.000003',master_log_pos=436,master_port=3307;
7,启动同步
$ start slave;
8,查看同步状态
$ show slave status
如果看到等待主发送事件..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