mysql 主从 keepalived_mysql 5.7+keepalived主从切换步骤简述

登陆从库:

mysql>stop slave;

mysql>show slave status;

mysql> reset slave all;

mysql>show master status;  记录此时从库的log_file和log_pos值

登陆主库:

修改/etc/keepalived/keepalived.conf文件

把priority 101改为priority 99，确认主库的priority值比从库小

#/etc/init.d/keepalived stop

在从库上确认虚拟IP是否漂移过去,用ip address命令确认

然后

mysql>change master to master_host='从库ip',master_user='slave',master_password='123456',master_log_file='从库当时记录的log_file',master_log_pos=从库当时记录的log_pos值,master_connect_retry=10;

start slave;

show slave status;

启动keepalived:

#/etc/init.d/keepalived start

至此切换完毕，在新主库上写入一条记录，看看是否同步到从从库。

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