How to fix Slave_SQL_Running: No to fix replication
mysql -u root -p
mysql> SHOW SLAVE STATUS \G
mysql> SHOW SLAVE STATUS \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 1.2.3.4
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001079
Read_Master_Log_Pos: 269214454
Relay_Log_File: slave-relay.000130
Relay_Log_Pos: 100125935
Relay_Master_Log_File: mysql-bin.001079
Slave_IO_Running: Yes
Slave_SQL_Running: No
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 1.2.3.4
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001079
Read_Master_Log_Pos: 269214454
Relay_Log_File: slave-relay.000130
Relay_Log_Pos: 100125935
Relay_Master_Log_File: mysql-bin.001079
Slave_IO_Running: Yes
Slave_SQL_Running: No
Repairing The Replication
Just to go sure, we stop the slave:
mysql> STOP SLAVE;
Fixing the problem is actually quite easy. We tell the slave to simply skip the invalid SQL query:
mysql> SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1;
This tells the slave to skip one query (which is the invalid one that caused the replication to stop). If you'd like to skip two queries, you'd use SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 2; instead and so on.
That's it already. Now we can start the slave again...
mysql> START SLAVE;
... and check if replication is working again:
mysql> SHOW SLAVE STATUS \G
mysql> SHOW SLAVE STATUS \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 1.2.3.4
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001079
Read_Master_Log_Pos: 447560366
Relay_Log_File: slave-relay.000130
Relay_Log_Pos: 225644062
Relay_Master_Log_File: mysql-bin.001079
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: mydb
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 1.2.3.4
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.001079
Read_Master_Log_Pos: 447560366
Relay_Log_File: slave-relay.000130
Relay_Log_Pos: 225644062
Relay_Master_Log_File: mysql-bin.001079
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: mydb
NOW THE STATE IS
ReplyDeleteSlave_IO_Running: NO
Slave_SQL_Running: Yes
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