启动mysql主从配置 准备两台服务器： Master：192.168.189.121 Slave： 192.168.189.120
两台主机安装mysql yum -y install mysql mysql-server service mysqld start service iptables stop setenforce 0
Master主机配置 开启二进制日志
vim /etc/my.cnf
server-id=1 log-bin=mysql-bin
保存退出重启mysql service mysqld restart
登录到mysql中给slave主机授权同步账号
mysql -uroot
grant replication slave on . to ‘tom’@’%’ identified by ‘123’; flush privileges;
授权完后，查看二进制日志文件和位置
mysql> show master status; ±-----------------±---------±-------------±-----------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | ±-----------------±---------±-------------±-----------------+ | mysql-bin.000001 | 333 | | | ±-----------------±---------±-------------±-----------------+ 1 row in set (0.00 sec)
Slave主机的配置 开启中继日志 vim /etc/my.cnf
server-id=2 relay-log=mysql-relay
保存退出，重启mysql service mysqld restart
登录mysql配置同步 mysql -uroot
stop slave；
mysql> change master to -> master_host=‘192.168.189.121’, -> master_user=‘tom’, -> master_password=‘123’, -> master_log_file=‘mysql-bin.000001’, -> master_log_pos=333;
启动slave start slave；
查看slave的状态 mysql> show slave status \G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.189.121 Master_User: slave Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 333 Relay_Log_File: mysql-relay.000002 Relay_Log_Pos: 251 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes
查看到IO和SQL线程都为Yes说明已经成功，下面可以在Master主机上创建一个数据库测试，slave是否同步；
扩展： 跳过一次同步的错误事件 set global sql_slave_skip_counter=1;
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