1.要求:
3个mysql版本一致
初始化表,并在后台启动mysql
修改root密码
修改配置文件:
启动一个docker mysql 容器,并进入,复制其配置文件 /etc/mysql/my.cnf到本地,做为基础配配置 html
docker run --name db1 -p 30000:3306 -d -e MYSQL_ROOT_PASSWORD='root' mysql:5.6 docker exec -it 757b /bin/bash cat /etc/mysql/my.cnf
拷贝内容到 /home/jayhe/jay/config/mysql/master_2slave/my-m.cnf 做为基础配置,下面的修改都是基于这个基础配置
2.修改主服务器master:
my.cnfmysql
[mysqld] #[必须]启动二进制日志 log-bin=mysql-bin #[必须]设置服务器惟一ID,默认时1,通常取IP最后一段 server-id=3001
3.修改从服务器slave:
my.cnf redis
[mysqld] #[非必须]启动二进制日志 log-bin=mysql-bin #[必须]设置服务器惟一ID,默认时1,通常取IP最后一段 server-id=3002
my.cnfsql
[mysqld] #[非必须]启动二进制日志 log-bin=mysql-bin #[必须]设置服务器惟一ID,默认时1,通常取IP最后一段 server-id=3003
启动3个mysql:
主服务器:挂载 /xx/xx/my.cnf(主服务器配置)到mysql容器docker
docker run --name mysql1 -p 3001:3306 -d -v /home/jayhe/jay/config/mysql/master_2slave/my-m.cnf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD='root' mysql:5.6
从服务器:挂载 /xx/xx/my.cnf(从服务器配置)到mysql容器数据库
docker run --name mysql2 -p 3002:3306 -d -v /home/jayhe/jay/config/mysql/master_2slave/my-s1.cnf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD='root' mysql:5.6
docker run --name mysql3 -p 3003:3306 -d -v /home/jayhe/jay/config/mysql/master_2slave/my-s2.cnf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD='root' mysql:5.6
链接容器中的mysql --- 即便本地mysql每启动,仍然能够链接容器的mysql服务
语法:安全
mysql -h IP -P port -uroot -proot
##链接主服务器 mysql -h 127.0.0.1 -P 3001 -uroot -proot ##登陆主服务器,建立帐户并受权 grant replication slave on *.* to 'mysync'@'%' identified by 'root'; ##查看主服务器状态 show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000004 | 312 | | | |
+------------------+----------+--------------+------------------+-------------------+
登陆从服务器:bash
mysql -h 127.0.0.1 -P 3002 -uroot -proot
配置从服务器:
--- 这里的 master_log_file='mysql-bin.000004', master_log_pos与主服务器中的master status一致服务器
change master to master_host='172.17.64.106',master_port=3001,master_user='mysync',master_password='root',master_log_file='mysql-bin.000004', master_log_pos=312;
启动从服务器复制功能less
start slave;
查看从服务器复制功能状态:
show slave status;
+----------------------------------+---------------+-------------+-------------+---------------+------------------+---------------------+-------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+----------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+
| Slave_IO_State | Master_Host | Master_User | Master_Port | Connect_Retry | Master_Log_File | Read_Master_Log_Pos | Relay_Log_File | Relay_Log_Pos | Relay_Master_Log_File | Slave_IO_Running | Slave_SQL_Running | Replicate_Do_DB | Replicate_Ignore_DB | Replicate_Do_Table | Replicate_Ignore_Table | Replicate_Wild_Do_Table | Replicate_Wild_Ignore_Table | Last_Errno | Last_Error | Skip_Counter | Exec_Master_Log_Pos | Relay_Log_Space | Until_Condition | Until_Log_File | Until_Log_Pos | Master_SSL_Allowed | Master_SSL_CA_File | Master_SSL_CA_Path | Master_SSL_Cert | Master_SSL_Cipher | Master_SSL_Key | Seconds_Behind_Master | Master_SSL_Verify_Server_Cert | Last_IO_Errno | Last_IO_Error | Last_SQL_Errno | Last_SQL_Error | Replicate_Ignore_Server_Ids | Master_Server_Id | Master_UUID | Master_Info_File | SQL_Delay | SQL_Remaining_Delay | Slave_SQL_Running_State | Master_Retry_Count | Master_Bind | Last_IO_Error_Timestamp | Last_SQL_Error_Timestamp | Master_SSL_Crl | Master_SSL_Crlpath | Retrieved_Gtid_Set | Executed_Gtid_Set | Auto_Position |
+----------------------------------+---------------+-------------+-------------+---------------+------------------+---------------------+-------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+----------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+
| Waiting for master to send event | 172.17.64.106 | mysync | 3001 | 60 | mysql-bin.000004 | 409 | mysqld-relay-bin.000002 | 380 | mysql-bin.000004 | Yes | Yes | | | | | | | 0 | | 0 | 409 | 554 | None | | 0 | No | | | | | | 0 | No | 0 | | 0 | | | 3001 | 735f9147-d3ec-11e6-b8c6-0242ac120002 | /var/lib/mysql/master.info | 0 | NULL | Slave has read all relay log; waiting for the slave I/O thread to update it | 86400 | | | | | | | | 0 |
+----------------------------------+---------------+-------------+-------------+---------------+------------------+---------------------+-------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+----------------------------+-----------+---------------------+-----------------------------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+注意:
Slave_IO_State = Waiting for master to send event
Slave_IO和Slave_SQL 都是 YES
则表示主从复制配置成功
测试主从复制:
进入主服务器,建立一个数据库
mysql -h 127.0.0.1 -P 3001 -uroot -proot
create database test1;
进入从服务器,查看数据库,发现已经存在了test1 --- 与主服务器同步
mysql -h 127.0.0.1 -P 3001 -uroot -proot
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test1 |
+--------------------+
特别注意:
1.主服务器中,建立帐户并受权
grant replication slave on *.* to 'mysync'@'%' identified by 'root';
通常不用root帐户,
*.* 表示全部客户端均可连,只要帐户和密码正确,这里可用具体IP代替,增强安全 eg: 192.168.145.222
2.从服务器中,配置从服务器时:
master_host 为docker的宿主机地址, 不能写 127.0.0.1
master_port 为主服务器mysql映射到宿主机的端口 3001
master_user 为主服务器中建立的用户 mysync
master_log_file 为主服务器show master status查询出来的 File
master_log_pos 为主服务器show master status查询出来的 Position
3.配置文件其余内容配置项:
#若是须要增长Slave库则,此id日后顺延;
server-id = 2
log-bin=mysql-bin
#主库host
master-host = 192.168.168.253
#在主数据库服务器中创建的用于该从服务器备份使用的用户
master-user = forslave
master-password = ******
master-port = 3306
#若是发现主服务器断线,从新链接的时间差;
master-connect-retry=60
#不须要备份的数据库;
replicate-ignore-db=mysql
#须要备份的数据库
replicate-do-db=minishop
log-slave-update
4.从MySQL镜像容器中获取的 my.cnf 基础配置
# Copyright (c) 2015, 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=3001 # 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/