I have a Master-Slave replication setup and it looks like that it is running fine. Below is a result of SHOW SLAVE STATUS
command:
show slave STATUS\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: *.*.*.*
Master_User: repliV1
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 10726644
Relay_Log_File: mysqld-relay-bin.000056
Relay_Log_Pos: 231871
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: data1
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: 10726644
Relay_Log_Space: 232172
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: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
I would like to understand further about the Relay_Log_File
, Relay_Log_Pos
and Relay_Master_Log_File
.
My questions are:
Is it true that the relay log file is one which is being read and stored locally for the replication to run ?
What about the
relay_master_log_file
then; how is it different from theMaster_Log_File
?What are both of these values, viz.,
Read_Master_Log_Pos
andRelay_Log_Pos
? Why are they showing up even though the replication is complete and in sync ?Is it true that these files are in binary format, and hence I cannot view them ?