根据网络加实践整理
一、环境
主机：IP：172.17.31.125
从机：IP：172.17.32.210
需要同步的数据库：hbws
二、master机和slave机的相关配置
1、修改master机器中mysql配置文件my.cnf，该文件在/etc目录下
在[mysqld]配置段添加如下字段
server-id = 1 #主机标示，整数
log_bin = MySQL-bin #确保此文件可写
read-only = 0 #主机，读写都可以
binlog-do-db = hbws #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
在master机上为slave机添加一同步帐号
GRANT REPLICATION SLAVE ON *.* TO 'backup'@'172.17.32.210' IDENTIFIED BY 'oracle'
重启master机的mysql服务：service mysqld restart
用show master status 命令看日志情况
mysql> show master status;
+------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| MySQL-bin.000001 | 98 | hbws | mysql |
+------------------+----------+--------------+------------------+
1 row in set (0.01 sec)
2、修改slave机中mysql配置文件
同样在[mysqld]字段下添加如下内容
server-id = 2
log_bin = MySQL-bin
master-host =172.17.32.210
master-user =backup
master-pass =oracle
master-port =3306
master-connect-retry=60 #如果从服务器发现主服务器断掉，重新连接的时间差(秒)
replicate-do-db =hbws #只复制某个库
replicate-ignore-db=mysql #不复制某个库
然后重启slave机的mysql
在slave机中进入mysql
mysql>start slave;
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.17.31.125
Master_User: backup
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: MySQL-bin.000003
Read_Master_Log_Pos: 386
Relay_Log_File: mysqld-relay-bin.000007
Relay_Log_Pos: 523
Relay_Master_Log_File: MySQL-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: hbws
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: 386
Relay_Log_Space: 523
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
1 row in set (0.00 sec)
显示 Slave_IO_Running: Yes
Slave_SQL_Running: Yes
表示配置正确
三、测试主从服务器是否能同步
在主服务器上面新建一个表，必须在需要同步的数据库（hbws）下
mysql> use hbws;
Database changed
mysql> insert into sss values ('liuliu');
Query OK, 1 row affected (0.00 sec)
mysql> select * from sss;
+--------+
| name |
+--------+
| asdf |
| liuliu |
+--------+
2 rows in set (0.00 sec)
mysql>
在从服务器查看是否同步过来
mysql> use hbws;
Database changed
mysql> select * from sss;
+--------+
| name |
+--------+
| asdf |
| liuliu |
+--------+
2 rows in set (0.00 sec)