mysql> select version();
+------------+
| version()  |
+------------+
| 5.1.73-log |
+------------+
1 row in set (0.00 sec)

[root@10-4-14-168 ~]# cat /etc/redhat-release
CentOS release 6.5 (Final)

#yum install mysql-server –enablerepo=remi
 
#yum install mysql-devel

mysql-5.1.73-3.el6_5.x86_64
mysql-libs-5.1.73-3.el6_5.x86_64
mysql-server-5.1.73-3.el6_5.x86_64
mysql-devel-5.1.73-3.el6_5.x86_64

service mysqld start

mysql> UPDATE mysql.user SET password = PASSWORD('ge0513.mysql') -> WHERE user = 'root';
Query OK, 3 rows affected (0.00 sec)
Rows matched: 3  Changed: 3  Warnings: 0mysql> SELECT user,host,password FROM mysql.user;
+------+-------------+-------------------------------------------+
| user | host        | password                                  |
+------+-------------+-------------------------------------------+
| root | localhost   | *7AE39BE5035D5C32361400FF7DEDD757AA76896A |
| root | 10-4-14-168 | *7AE39BE5035D5C32361400FF7DEDD757AA76896A |
| root | 127.0.0.1   | *7AE39BE5035D5C32361400FF7DEDD757AA76896A |
|      | localhost   |                                           |
|      | 10-4-14-168 |                                           |
+------+-------------+-------------------------------------------+
5 rows in set (0.00 sec)
mysql> DROP user ''@localhost;
Query OK, 0 rows affected (0.00 sec)mysql> DROP user ''@'10-4-14-168';
Query OK, 0 rows affected (0.00 sec)

port = 3306
log_bin = /var/lib/mysql/mysql-binlog
server-id = 1 //只要主从不一样就行
binlog_do_db = test//要做同步的数据库名字，可以是多个数据库，之间用分号分割。

server-id = 2
master-host = 10.4.14.168
master-user = gechong
master-password = gechong
master-port = 3306
master-connect-retry = 5
replicate-do-db = test

GRANT REPLICATION SLAVE,REPLICATION CLIENT ON *.* TO gechong@'%' IDENTIFIED BY 'gechong';

mysql> show master status;
+---------------+----------+--------------+------------------+
| File          | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+---------------+----------+--------------+------------------+
| binlog.000003 |      412 |              |                  |
+---------------+----------+--------------+------------------+
1 row in set (0.00 sec)

mysql> show slave status\G
*************************** 1. row ***************************Slave_IO_State: Waiting for master to send eventMaster_Host: 10.4.14.168Master_User: gechongMaster_Port: 3306Connect_Retry: 5Master_Log_File: mysql-binlog.000001Read_Master_Log_Pos: 325Relay_Log_File: mysqld-relay-bin.000002Relay_Log_Pos: 473Relay_Master_Log_File: mysql-binlog.000001Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB: testReplicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 325Relay_Log_Space: 629Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_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: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error:
1 row in set (0.00 sec)

1：停掉从库
mysql> slave stop
2：主库上找到日志和位置
mysql> show master status;
3：手动同步
mysql> change master to
> master_host='master_ip',
> master_user='gechong',
> master_password='gechong',
> master_port=3306,
> master_log_file='mysql-bin.000020',
> master_log_pos=135617781;
1 row in set (0.00 sec)
4：启动从库
mysql> slave start;
1 row in set (0.00 sec)

>slave stop;
>SET GLOBAL sql_slave_skip_counter = 1;
>slave start;