Mysql 主从镜像机制[Freebsd]
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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