日期:2012-06-02 15:08:00 来源:本站整理
mysql数据库互为主从配置办法分享[MySQL防范]
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mysql主从配置小记:
共有四台机械:A(10.1.10.28),B(10.1.10.29),C(10.1.10.30),D(10.1.10.31).
配置后后果:A-C互为主从,B为A的slave,D为C的slave.
0)预备工作
在四台机械上面安装好mysql后,成立用于同步的账号.
增添账户:
复制代码 代码以下:
INSERT INTO user (Host,User, Password,Select_priv,Insert_priv,Update_priv,Delete_priv, Create_priv,Drop_priv) VALUES('%','test',password('test'),'Y','Y','Y','Y','Y','Y');
革新数据库:
复制代码 代码以下:
FLUSH PRIVILEGES;
1)配置A-C互为主从
改正A配置文件为:
复制代码 代码以下:
server-id = 1
replicate-do-db=test
replicate-do-db=test_admin
log-bin=mysql-bin
log-slave-updates
replicate-wild-do-table=test.%
replicate-wild-do-table=test_admin.%
binlog-ignore-db=mysql
slave-skip-errors=all
改正C配置文件为:
复制代码 代码以下:
server-id = 3
binlog-do-db=test
binlog-do-db=test_admin
log-bin=mysql-bin
log-slave-updates
replicate-wild-do-table=test.%
replicate-wild-do-table=test_admin.%
binlog-ignore-db=mysql
slave-skip-errors=all
重启mysql是配置见效
将A设置为主:
终止同步:
复制代码 代码以下:
slave stop;
清空服务器master日记:
复制代码 代码以下:
reset master;
受权同步账号:
复制代码 代码以下:
GRANT REPLICATION SLAVE ON *.* TO 'test'@'%' IDENTIFIED BY 'test';
革新受权:
复制代码 代码以下:
flush privileges;
锁定数据库:
复制代码 代码以下:
flush tables with read lock;
将C设置为从:
终止同步:
复制代码 代码以下:
slave stop;
配置同步信息:
复制代码 代码以下:
CHANGE MASTER TO MASTER_HOST='10.1.10.28', MASTER_USER='test', MASTER_PASSWORD='test', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107;
将C设置为主:
终止同步:
复制代码 代码以下:
slave stop;
清空服务器master日记:
复制代码 代码以下:
reset master;
受权同步账号:
复制代码 代码以下:
GRANT REPLICATION SLAVE ON *.* TO 'test'@'%' IDENTIFIED BY 'test';
革新受权:
复制代码 代码以下:
flush privileges;
锁定数据库:
复制代码 代码以下:
flush tables with read lock;
将A设置为从:
终止同步:
复制代码 代码以下:
slave stop;
配置同步信息:
复制代码 代码以下:
CHANGE MASTER TO MASTER_HOST='10.1.10.30', MASTER_USER='test', MASTER_PASSWORD='test', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107;
2)将B设置为A的从
复制代码 代码以下:
server-id = 2
replicate-do-db=test
replicate-do-db=test_admin
log-bin=mysql-bin
log-slave-updates
replicate-wild-do-table=test.%
replicate-wild-do-table=test_admin.%
binlog-ignore-db=mysql
slave-skip-errors=all
重启mysql服务
终止同步:
复制代码 代码以下:
slave stop;
配置同步信息:
复制代码 代码以下:
CHANGE MASTER TO MASTER_HOST='10.1.10.28', MASTER_USER='test', MASTER_PASSWORD='test', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107;
启动同步:
复制代码 代码以下:
slave start;
3)将D设置为C的从
复制代码 代码以下:
server-id = 4
replicate-do-db=test
replicate-do-db=test_admin
log-bin=mysql-bin
log-slave-updates
replicate-wild-do-table=test.%
replicate-wild-do-table=test_admin.%
binlog-ignore-db=mysql
slave-skip-errors=all
重启mysql服务
终止同步:
复制代码 代码以下:
slave stop;
配置同步信息:
复制代码 代码以下:
CHANGE MASTER TO MASTER_HOST='10.1.10.30', MASTER_USER='test', MASTER_PASSWORD='test', MASTER_LOG_FILE='mysql-bin.000001', MASTER_LOG_POS=107;
启动同步:
复制代码 代码以下:
slave start;
完成之后可以成立增添数据测试一下能否可以.
下面是常见错误处理:
1)
change master招致的:
Last_IO_Error: error connecting to master 'repl1@IP:3306' - retry-time: 60 retries
2)
在没有解锁的情形下终止slave进程:
mysql> stop slave;
ERROR 1192 (HY000): Can't execute the given command because you have active locked tables or an active transaction
3)
change master语法错误,落下逗号
mysql> change master to
-> master_host='IP'
-> master_user='USER',
-> master_password='PASSWD',
-> master_log_file='mysql-bin.000002',
-> master_log_pos=106;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'master_user='USER',
master_password='PASSWD',
master_log_file='mysql-bin.000002' at line 3
4)
在没有终止slave进程的情形下change master
mysql> change master to master_host=‘IP', master_user='USER', master_password='PASSWD', master_log_file='mysql-bin.000001',master_log_pos=106;
ERROR 1198 (HY000): This operation cannot be performed with a running slave; run STOP SLAVE first
5)
A B的server-id相同:
Last_IO_Error: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server ids;
these ids must be different for replication to work (or the --replicate-same-server-id option must be used on
slave but this does not always make sense; please check the manual before using it).
查看server-id
mysql> show variables like 'server_id';
手动改正server-id
mysql> set global server_id=2; #此处的数值和my.cnf里设置的一样就行
mysql> slave start;
6)change master之后,查看slave的状况,发现slave_IO_running 为
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