Tuesday, December 20, 2016

MySQL New Slave Settings

I can never remember which fields are important.  It's the master_log_file and master_log_pos but these come from show slave status.  Master_log_file is from master_log_file but master_log_pos comes from exec_master_pos.

CHANGE MASTER TO master_user = 'dbp3', 
  MASTER_PASSWORD='...', 
  master_log_file="mysql-bin.006818", 
  master_log_pos=234867554;

stop slave;
mysql> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State:
                  Master_Host: dbp1
                  Master_User: dbp5
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.006818
          Read_Master_Log_Pos: 234867623
               Relay_Log_File: mysqld-relay-bin.001129
                Relay_Log_Pos: 234867713
        Relay_Master_Log_File: mysql-bin.006818
             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:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 234867554
              Relay_Log_Space: 234867995
              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: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 20
                  Master_UUID:
             Master_Info_File: /var/lib/mysql/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State:
           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

1 row in set (0.00 sec)


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