MySQL是开源的关系型数据库系统。复制(Replication)是从一台MySQL数据库服务器（主服务器master）复制数据到另一个服务器（从服务器slave）的一个进程
首先确保主从服务器上的Mysql版本相同
系统环境 centos-5.5
mater 192.168.0.104
slave 192.168.0.102
master配置设置
yum install -y mysql*
service mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ] 看到这个提示，证明mysql启动成功
mysqladmin -uroot password 密码 数据库设置密码
mysql -uroot -p
Enter password: 输入设置的数据库密码
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.0.95 Source distribution 这一行很重要，主从mysql服务器必须版本一致
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.
mysql> GRANT REPLICATION SLAVE ON *.* TO ‘slave001‘@‘192.168.0.102‘ IDENTIFIED BY ‘123456‘; 给与从服务器授权
mysql> flush privileges; 刷新数据库
vim /etc/my.cnf
找到 user=mysql
修改为
user=mysql
log_bin=/var/log/mysql/mysql-bin.log 确保有这个配置文件、可写
server-id=1
read-only=0
binlog-do-db=test
binlog-ignore-db=mysql
service mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ] 如果看到这个提示，证明主数据库配置完毕
slave服务器设置
yum install -y mysql*
service mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ] 看到这个提示，证明mysql启动成功
mysqladmin -uroot password 密码 数据库设置密码
mysql -uroot -p
Enter password: 输入设置的数据库密码
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.0.95 Source distribution 这一行很重要，主从mysql服务器必须版本一致
Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.
mysql>
vim /etc/my.cnf
找到 user=mysql
修改为
server-id=2
log_bin=/var/log/mysql/mysql-bin.log
master-host=192.168.0.104
master-user=slave001
master-pass=123456
master-port=3306
master-connect-retry=60
replicate-do-db =test
replicate-ignore-db=mysql
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ] 如果看到这个提示，证明从数据库配置完毕
到了这一步mysql主从复制就做完了
验证
master mysql> show master status\G;
slave mysql> show master status\G;
会看到
File: mysql-bin.000001
Position: 1374
Binlog_Do_DB: test
Binlog_Ignore_DB: mysql
如果看到证明，主从复制完成