Shulou(Shulou.com)06/01 Report--

1. Environment description

MariaDB 10.1.35

CentOS 6.8

2. Stop slave command

Root@MariaDB0 07:55: [(none)] > help stopERROR 2006 (HY000): MySQL server has gone awayNo connection. Trying to reconnect...Connection id: 21Current database: * NONE * * Name: 'STOP SLAVE'Description:Syntax:STOP SLAVE [thread_types] thread_types: [thread_type [, thread_type].] thread_type: IO_THREAD | SQL_THREADStops the slave threads. STOP SLAVE requires the SUPER privilege.Recommended best practice is to execute STOP SLAVEon the slave beforestopping the slave server (see http://dev.mysql.com/doc/refman/5.5/en/server-shutdown.html, for moreinformation). When using the row-based logging format: You should execute STOP SLAVEon the slave prior to shutting down the slave server if you arereplicating any tables that use a nontransactional storage engine (seethe Note later in this section). In MySQL 5.5.9 and later, you can alsouse STOP SLAVE SQL_THREAD for this purpose.Like START SLAVE, this statement may be used with the IO_THREAD andSQL_THREAD options to name the thread or threads to be stopped.*Note*: In MySQL 5.5, STOP SLAVE waits until the current replicationevent group affecting one or more non-transactional tables has finishedexecuting (if there is any such replication group), or until the userissues a KILL QUERY or KILL CONNECTION statement. (Bug# 319, Bug#38205) URL: https://mariadb.com/kb/en/stop-slave/root@MariaDB0 09:07: [(none)] > root@MariaDB0 09:07: [(none)] > show slave status\ G * * 1. Row * * Slave_IO_State: Waiting for master to send event Master_Host: 192.168.56.101 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000005 Read_Master_Log_Pos: 335 Relay_Log_File: relay-bin.000015 Relay_Log_Pos: 627 Relay_Master_Log_File: mysql-bin.000005 Slave_IO_Running: Yes 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: 335 Relay_Log_Space: 5452 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: 0Master_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: 1 Master_SSL_Crl: Master_SSL_Crlpath: Using_Gtid: No Gtid_IO_Pos: Replicate_Do_Domain_Ids: Replicate_Ignore_Domain_Ids: Parallel_Mode: conservative1 row in set (0.00 sec) ERROR: No query specifiedroot@MariaDB0 09:07: [(none)] > stop slave io_thread ERROR 2006 (HY000): MySQL server has gone awayNo connection. Trying to reconnect...Connection id: 22Current database: * NONE * * Query OK, 0 rows affected (0.01 sec) root@MariaDB0 09:09: [(none)] > stop slave sql_thread;Query OK, 0 rows affected (0.00 sec) root@MariaDB0 09:09: [(none)] > start slave io_thread;Query OK, 0 rows affected (0.00 sec) root@MariaDB0 09:10: [(none)] > start slave sql_thread Query OK, 0 rows affected (0.00 sec) root@MariaDB0 09:10: [(none)] > show slave status\ G * * 1. Row * * Slave_IO_State: Waiting for master to send event Master_Host: 192.168.56.101 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000005 Read_Master_Log_Pos: 335 Relay_Log_File: relay-bin.000016 Relay_Log_Pos: 541 Relay_Master_Log_File: mysql-bin.000005 Slave_IO_Running: Yes 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: 335 Relay_Log_Space: 6040 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: 0Master_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: 1 Master_SSL_Crl: Master_SSL_Crlpath: Using_Gtid: No Gtid_IO_Pos: Replicate_Do_Domain_Ids: Replicate_Ignore_Domain_Ids: Parallel_Mode: conservative1 row in set (0.00 sec) ERROR: No query specifiedroot@MariaDB0 09:10: [(none)] > stop slave Query OK, 0 rows affected (0.00 sec) root@MariaDB0 09:10: [(none)] > start slave;Query OK, 0 rows affected (0.00 sec) root@MariaDB0 09:10: [(none)] >

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