mysql主从同步卡住的问题~
有一主一从,从库主从同步卡住了,延迟好久了。
主从同步卡住的SQL是删除一个几千万的表里面十万条数据,在主库上很快就完成了,从库上就卡住了。
我按网上的方法,修改了下面两个参数:
set global sync_binlog=20 ;
set global innodb_flush_log_at_trx_commit=2;
各种参数值搭配都不行,也重启了。
最后我干脆删了从库上的同步数据文件(master.info,relay-log.info,mysql-relay-bin.000xxx等),重新搭了主从同步,还是卡住!
没有办法了,哪位高手能指点一下么?谢谢!
下面是各种数据:
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.3.112
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001276
Read_Master_Log_Pos: 449567705
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 279
Relay_Master_Log_File: mysql-bin.001246
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: mysql
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: 332146441
Relay_Log_Space: 16431867934
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: 98412
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 31123306
Master_UUID: 29c7258c-bee8-11e7-b50f-00163e0ac3db
Master_Info_File: /data/data7-209/mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Reading event from the relay log
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0