MySQL双主配置_MySQL

准备环境：服务器操作系统为RHEL6.4 x86_64，为最小化安装。主机A和主机B均关闭防火墙和SELINUX ,IP地址分别为192.168.131.129和192.168.131.130，MySQL版本为5.6.26，为通用二进制包。

 

安装MySQL

 

1.主机A操作

 

# tar xf mysql-5.6.26-linux-glibc2.5-x86_64.tar.gz

 

# mv mysql-5.6.26-linux-glibc2.5-x86_64 /usr/local/mysql

 

# useradd -M -s /sbin/nologin mysql

 

# chown -R root:root /usr/local/mysql/*

 

# chown -R mysql:mysql /usr/local/mysql/data/

 

# yum -y install libaio

 

# cd /usr/local/mysql/scripts/

 

# ./mysql_install_db --datadir=/usr/local/mysql/data/ --user=mysql --basedir=/usr/local/mysql/

 

# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld

 

# echo 'export PATH=$PATH:/usr/local/mysql/bin' >>/etc/profile

 

# source /etc/profile

 

# vim /etc/my.cnf

 

[mysqld]

 

datadir=/usr/local/mysql/data

 

socket=/tmp/mysql.sock

 

user=mysql

 

symbolic-links=0

 

[mysqld_safe]

 

log-error=/var/log/mysqld.log

 

pid-file=/var/run/mysqld/mysqld.pid

 

# service mysqld start

 

#chkconfig mysqld on

 

# ss -tunlp | grep 3306

# mysqladmin -uroot password '123456' #设置数据库密码

 

2.主机B操作（同上）

 

二、配置双主

 

1、主机A操作

 

# vim /etc/my.cnf

 

server-id=20

 

log-bin=mysql-bin

 

log-bin-index=mysql-bin.index

 

replicate-ignore-db=test

 

binlog-ignore-db=mysql

 

binlog-ignore-db=information_schema

 

auto-increment-increment=2

 

auto-increment-offset=1

 

# service mysqld restart

 

# mysql -uroot -p123456

 

mysql> flush tables with read lock;

 

再打开一个远程终端窗口，执行以下操作

 

# mysqldump -uroot -p123456 -B test > test.sql

 

返回之前的终端窗口，做以下操作

 

mysql> unlock tables;

 

mysql> grant replication slave on *.* to 'wdd'@'192.168.131.130' identified by '123456';

 

mysql> flush privileges;

 

# scp test.sql 192.168.131.130:/root

 

2、主机B操作

 

# vim /etc/my.cnf

 

server-id = 21

 

log-bin=mysql-bin

 

log-bin-index= mysql-bin.index

 

replicate-do-db=test

 

binlog-ignore-db=mysql

 

binlog-ignore-db=information_schema

 

auto-increment-increment=2

 

auto-increment-offset=2

 

#service mysqld restart

 

# mysql -uroot -p123456

 

# mysql -uroot -p123456

 

mysql> grant replication slave on *.* to 'wdd'@'192.168.131.129' identified by '123456';

 

mysql> flush privileges;

 

3.主机A和主机B分别作如下操作

 

主机A

 

①# mysql -uroot -p123456

 

mysql> SHOW MASTER STATUS;

mysql> change master to

 

master_host='192.168.131.130',

 

master_user='wdd',

 

master_password='123456',

 

master_log_file=' mysql-bin.000002',

 

master_log_pos=420;

 

mysql> start slave;

 

mysql> show slave status\G;

 

②# mysql -uroot -p123456

 

mysql> show master status;

mysql> change master to

 

master_host='192.168.131.129',

 

master_user='wdd',

 

master_password='123456',

 

master_log_file='mysql-bin.000002',

 

master_log_pos=689;

 

mysql> start slave;

 

mysql> show slave status\G;

三、测试

 

1、主机A进行一下操作

 

mysql> use test;

 

mysql> create table info(

 

-> id int(10) not null auto_increment primary key,

 

-> name char(20));

 

mysql> show tables;

2、主机B进行操作

 

mysql> use test;

 

mysql> show tables;

mysql> create table person (

 

-> id int(20) unsigned not null auto_increment primary key,

 

-> name char(20));

 

mysql> show tables;

3.在主机A进行操作检验