标签:mysql的主从切换
切换主从:
从库都已经执行完了relay log 中的全部更新:
mysql> stop slave io_thread;
Query OK, 0 rows affected (0.06 sec)
mysql> show processlist\G
*************************** 1. row ***************************
Id: 6
User: system user
Host:
db: NULL
Command: Connect
Time: 2144
State: Slave has read all relay log; waiting for the slave I/O thread to update it
Info: NULL
2.停止slave
mysql> stop slave io_thread;
Query OK, 0 rows affected (0.06 sec)
[root@192 /]# grep log-bin /data/3307/my.cnf
log-bin=/data/3307/mysql3307-bin
[root@192 /]#
[root@192 ~]# /usr/bin/mysqladmin -p3307 --socket=/data/3307/mysql.sock shutdown
[root@192 ~]# /opt/mysql/bin/mysqld_safe --defaults-file=/data/3307/my.cnf &
[root@192 ~]# /usr/bin/mysql -p3307 --socket=/data/3307/mysql.sock
3.reset master
mysql> stop slave ;
Query OK, 0 rows affected (0.13 sec)
mysql> reset master;
Query OK, 0 rows affected (0.41 sec)
mysql>
4.删除master.info relay-log.info
5.从库要打开log-bin ,关闭log-slave-updates,关闭read-only。
标签:mysql的主从切换
原文地址:http://wangqh.blog.51cto.com/5367393/1771919