主库 ip：192.168.1.51
从库 ip:192.168.1.252
主机：
1）创建一个slave用户，并且赋予权限
grant replication slave,reload,super on *.* to 'slave'@'%' identified by '123456'; flush privileges;
2)更改配置文件（/etc/my.cnf 放在[mysqld]下面）
server-id = 1 #主机标示，整数 log-bin = mysql-binlog #确保此文件可写 read-only =0 #主机，读写都可以 binlog-do-db =test #需要备份数据，多个写多行 binlog-ignore-db =mysql #不需要备份的数据库，多个写多行
3)重启mysql
service mysqld restart
4)查看主库的状态
在mysql中：show master status\G
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-binlog.000003
Position: 271
Binlog_Do_DB: 1309phpb
Binlog_Ignore_DB: mysql
1 row in set (0.00 sec)
ERROR:
No query specified
出现这样的提示，说明主库配置没有什么问题了
5）查看主库日志开始
mysql> show master status;
+---------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+---------------------+----------+--------------+------------------+
| mysql-binlog.000003 | 271 | 1309phpb | mysql |
+---------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&
二)从库的配置
1）修改从库配置文件（vi /etc/my.cnf）
server-id = 2 log-bin = mysql-binlog
2)重启mysql服务
3）进入mysql 更改主库参数
change master to master_host='192.168.1.51',master_user='slave',
master_password='123456',master_log_file='File字段的值',master_log_pos=Position 字段值;
change master to master_host='192.168.1.177',master_user='slave',master_password='root',master_log_file='mysql-binlog.000001',master_log_pos=203;
change master to master_host='192.168.1.177',master_user='slave',master_password='123456',master_log_file='binlog.000001',master_log_pos=203;
查看主库日志开始
mysql> show master status;
+---------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+---------------------+----------+--------------+------------------+
| mysql-binlog.000003 | 271 | 1309phpb | mysql |
+---------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
4）重启进程
start slave
5)查看从库的的状态
show slave status\G
show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.51
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-binlog.000003
Read_Master_Log_Pos: 271
Relay_Log_File: localhost-relay-bin.000004
Relay_Log_Pos: 419
Relay_Master_Log_File: mysql-binlog.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: 1309phpb
Replicate_Ignore_DB: mysql
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 271
Relay_Log_Space: 578
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.00 sec)
6)此时可以从主库添加数据，从库查询数据了
