1.修改mysql配置

找到主数据库的配置文件my.cnf(或者my.ini)，我的在/etc/mysql/my.cnf,在[mysqld]部分插入如下两行：

[mysqld]
log-bin=mysql-bin #开启二进制日志
server-id=1 #设置server-id

2.重启mysql，创建用于同步的用户账号

打开mysql会话shell>mysql -hlocalhost -uname -ppassword

创建用户并授权：用户：rel1密码：slavepass

mysql> CREATE USER 'repl'@'123.57.44.85' IDENTIFIED BY 'slavepass';#创建用户

mysql> GRANT REPLICATION SLAVE ON . TO 'repl'@'123.57.44.85';#分配权限
mysql>flush privileges; #刷新权限

3.查看master状态，记录二进制文件名(mysql-bin.000003)和位置(73)：

mysql > SHOW MASTER STATUS;

+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000003 | 73 | test | manual,mysql |
+------------------+----------+--------------+------------------+

二、从服务器slave修改：

1.修改mysql配置

同样找到my.cnf配置文件，添加server-id

[mysqld]

server-id=2 #设置server-id，必须唯一

重启mysql，打开mysql会话，执行同步SQL语句(需要主服务器主机名，登陆凭据，二进制文件的名称和位置)：

CHANGE MASTER TO MASTER_HOST='192.168.171.129', MASTER_USER='root', MASTER_PASSWORD='Root.110',  MASTER_LOG_FILE='mysql-bin.000002',  MASTER_LOG_POS=  4532;

3.启动slave同步进程：

mysql>start slave;

4.查看slave状态：

mysql> show slave status\G;

*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 182.92.172.80
Master_User: rep1
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000013
Read_Master_Log_Pos: 11662
Relay_Log_File: mysqld-relay-bin.000022
Relay_Log_Pos: 11765
Relay_Master_Log_File: mysql-bin.000013
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
...