centos 7 部署docker mysql 5.6 容器主从服务
yum install -y wget docker
yum upgrade
给当前目录授权以便挂载到容器
mkdir -p /data/mysql
chcon -Rt svirt_sandbox_file_t /data/mysql
在宿主机上安装mysql client
下载 mysql client
wget http://cdn.mysql.com//Downloads/MySQL-5.6/MySQL-client-5.6.33-1.rhel5.x86_64.rpm
需要安装 perl
yum install perl
rpm -ivh MySQL-client-5.6.33-1.rhel5.x86_64.rpm
必要时清理当前实验机器上的所有docker容器
docker stop `docker ps -a -q`
docker rm `docker ps -a -q`
拉取mysql5.6镜像
docker pull mysql:5.6
编写mysql主从服务的配置文件
/conf/my-m.cnf
# 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 innodb_buffer_pool_size=8M 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/
innodb_buffer_pool_size=8M
log-bin = mysql-bin
server-id = 1
/conf/my-s.cnf
# 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 innodb_buffer_pool_size=8M 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/
innodb_buffer_pool_size=8M
log-bin = mysql-bin
server-id = 2
启动容器
master:
docker run -p 3307:3306 --name mysql-master -v $PWD/conf/my-m.cnf:/etc/mysql/my.cnf -v $PWD/logs-master:/logs -v $PWD/data-master:/mysql_data -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6
slave:
docker run -p 3308:3306 --name mysql-slave -v $PWD/conf/my-s.cnf:/etc/mysql/my.cnf -v $PWD/logs-slave:/logs -v $PWD/data-slave:/mysql_data -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.6
命令说明：
● -p 3306:3306：将容器的3306端口映射到主机的3306端口
● -v $PWD/conf/my.cnf:/etc/mysql/my.cnf：将主机当前目录下的conf/my.cnf挂载到容器的/etc/mysql/my.cnf
● -v $PWD/logs:/logs：将主机当前目录下的logs目录挂载到容器的/logs
● -v $PWD/data:/mysql_data：将主机当前目录下的data目录挂载到容器的/mysql_data
● -e MYSQL_ROOT_PASSWORD=123456：初始化root用户的密码
查看容器的IP地址
master:
docker inspect c290eb923d6a
slave:
docker inspect 7ffeb7add7ba
从宿主机登录master
mysql -uroot -p123456 -h172.17.0.2 -P 3306
登录后执行
GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';
show master status;
得到结果
mysql-bin.000004 | 312
从宿主机登录slave:
mysql -uroot -p123456 -h172.17.0.3 -P 3306
change master to master_host='172.17.0.2',master_user='backup',master_password='123456',
master_log_file='mysql-bin.000004',master_log_pos=312,master_port=3306;
start slave;
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
需要的时候stop slave;
参考：