【故障处理】mysql出现大量slave bin日志，将磁盘空间占满

master服务器IO线程 NO
问题描述：造成大量slave bin 日志 大量占用磁盘
排查解决步骤：
1.检查是配置的问题还是mysql数据库本身的故障
2.将master的机器 mysql_slave配置同步为backup机器的mysql_master配置
命令如下
(1)在backup机器查询backup数据库master的配置 show master status;---【show master status;=mysql-bin.001160 Position=719834926】

(2)在master机器查询配置信息是否一致 > show slave status\G;

*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.3.251
Master_User: jianfei
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001159
Read_Master_Log_Pos: 867363641
Relay_Log_File: slave-relay-bin.006727
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.001159
Slave_IO_Running: No
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table: mysql.%,information_schema.%,test.%
Last_Errno: 0
Last_Error:
Skip_Counter: 1
Exec_Master_Log_Pos: 1073741772
Relay_Log_Space: 135085197862
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: NULL

注意：这是这次解决的命令

slave stop;

change master to master_log_file='mysql-bin.001160',master_log_pos=719834926;

slave start;

完美解决