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Seven
Mysql 主从镜像机制[Freebsd]
2007/12/18 NULL unix

测试用例

主机和从机配置完全一样。环境vm5.5.3 Freebsd6.2 Mysql-5.1.4

master : 192.168.1.71
slave  : 192.168.1.72

mysql是ports默认设置安装的
数据文件在/var/db/mysql/下

1.主机配置
#mysql -u root -p
#Enter password:

mysql>GRANT FILE,SELECT,REPLICATION SLAVE ON . TO [email protected] IDENTIFIED BY ‘seven’;
mysql> flush tables with read lock;
mysql> show master status;
+——————+———-+————–+——————+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+——————+———-+————–+——————+
| mysql-bin.000035 |      106 |              |                  |
+——————+———-+————–+——————+
1 row in set (0.01 sec)
记下file & position

mysql>exit
#/usr/local/etc/rc.d/mysql_server stop

#ee /etc/my.cnf

[mysqld]下
server-id=1
log-bin=mysql-bin #log文件名

2.从机配置

#ee /etc/my.cnf
[mysqld]下
server-id=2

重启mysql
#mysql -u root -p
#Enter password:

mysql>CHANGE MASTER TO
    ->     MASTER_HOST=’192.168.1.71‘,           -- 主服务器名或IP地址
    ->     MASTER_USER=’seven’,             
    ->     MASTER_PASSWORD=’seven’,
    ->     MASTER_LOG_FILE=’mysql-bin.000035’,    – 日志名
    ->     MASTER_LOG_POS=106;                    – 显示偏移量     
mysql>START SLAVE;                                – 启动从服务器线程

—–重启2台服务器—–

*测试
在主服务器(1.71)数据库上做如下操作:
mysql> show processlist\G
*************************** 1. row ***************************
     Id: 1
   User: root
   Host: localhost
     db: NULL
Command: Query
   Time: 0
  State: NULL
   Info: show processlist
*************************** 2. row ***************************
     Id: 2
   User: seven
   Host: 192.168.1.72:56493
     db: NULL
Command: Binlog Dump
   Time: 510
  State: Has sent all binlog to slave; waiting for binlog to be updated
   Info: NULL
2 rows in set (0.01 sec)

在从服务器(1.72)数据库上做如下操作:

mysql> show processlist\G
*************************** 1. row ***************************
     Id: 1
   User: system user
   Host:
     db: NULL
Command: Connect
   Time: 577
  State: Waiting for master to send event
   Info: NULL
*************************** 2. row ***************************
     Id: 2
   User: system user
   Host:
     db: NULL
Command: Connect
   Time: 451
  State: Has read all relay log; waiting for the slave I/O thread to update it
   Info: NULL
*************************** 3. row ***************************
     Id: 3
   User: root
   Host: localhost
     db: NULL
Command: Query
   Time: 0
  State: NULL
   Info: show processlist
3 rows in set (0.01 sec)

还可以使用。。。。

查看主机状态
mysql> show master status\G
*************************** 1. row ***************************
            File: mysql-bin.000022
        Position: 453
    Binlog_Do_DB:
Binlog_Ignore_DB:
1 row in set (0.00 sec)

查看从服务器状态
mysql> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.1.71
                  Master_User: seven
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000022
          Read_Master_Log_Pos: 453
               Relay_Log_File: bsd_s-relay-bin.000009
                Relay_Log_Pos: 598
        Relay_Master_Log_File: mysql-bin.000022
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           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: 453
              Relay_Log_Space: 898
         &nbs p;    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: 2013
                Last_IO_Error: error connecting to master [email protected]:3306’ - retry-time: 60  retries: 86400
               Last_SQL_Errno: 0
               Last_SQL_Error:
1 row in set (0.00 sec)  

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