环境：

master ip： 192.168.10.10

salve  ip： 192.168.10.20

1)在两台机器上面安装好mysql

2)修改master my.cnf 添加如下几行

server-id = 1

log-bin = /opt/mysql/log/mysql-bin.log

datadir = /opt/mysql/data

innodb_flush_log_at_trx_commit = 1

sync_binlog = 1

3)修改slave my.cnf 添加如下行

server-id=2

relay-log-index=salve-relay-bin.index

relay-log=slave-relay-bin

datadir=/opt/mysql/data

4)重启master 和 slave MySQL服务

service mysqld restart

5)在master上创建复制账号

mysql> GRANT REPLICATION SLAVE ON *.* TO salve@192.168.10.20 IDENTIFIED BY 'mysql';

6)查看master 状态

mysql> show master status;

+------------------+----------+--------------+------------------+-------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000004 |      739 |              |                  |                   |

+------------------+----------+--------------+------------------+-------------------+

1 row in set (0.00 sec)

7)如果需要同步原有的库，还需要做如下操作，否者调到第11步

mysql> FLUSH TABLES WITH READ LOCK;

在主机上执行FLUSH TABLES WITH READ LOCK语句来刷新所有的表并阻断写操作

8) 使用mysqldump命令备份需要同步的数据库

[root@localhost ~]$ mysqldump -u root dbname > /home/root/dbname.sql

9)在salve上恢复数据

先将备份的sql文件复制到salve

[root@localhost ~]$ mysql -u root –e 'create database dbname;'

[root@localhost ~]$ mysql -u root dbname < /home/root/dbname.sql

10) salve恢复完成后重新打开master的读写功能

mysql> UNLOCK TABLES;

11)在slave上执行如下命令开始同步数据

mysql> change master to master_host='192.168.10.10',

master_user='slave',

master_password='mysql',

master_log_file='mysql-bin.000004',

master_log_pos=1790;

mysql> start slave

12) 最后在master上创建表验证