今天凌晨收到 Nagios发来的 mysql slave 报警,于是登录到 mysql slave(从服务器),看查看:
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 192.168.10.20
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000285
Read_Master_Log_Pos: 34641799
Relay_Log_File: server121-relay-bin.000773
Relay_Log_Pos: 34641916
Relay_Master_Log_File: mysql-bin.000285
Slave_IO_Running: No
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: 34641771
Relay_Log_Space: 34642146
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
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1153
Last_IO_Error: Got a packet bigger than 'max_allowed_packet' bytes
Last_SQL_Errno: 0
Last_SQL_Error:
1 row in set (0.00 sec)ERROR:
No query specified
根据错误提示"Got a packet bigger than 'max_allowed_packet' bytes",将 slave的 max_allowed_packet值改成和 master的值一样,然后重启 mysql,搞定
