Failed to initialize the master info structure

ERROR:

 

091104 11:12:49 [ERROR] Failed to open the relay log '/var/run/mysqld/mysqld-relay-bin.9339843' (relay_log_pos 233)

091104 11:12:49 [ERROR] Could not find target log during relay log initialization

091104 11:12:49 [ERROR] Failed to initialize the master info structure

 

 

 

Due to the way in which the master and slaves where stopped  the relay logs got out of sync, hence replication would not restart.

 

Found the solution was to

 

a) make a note of Master_Log_File and Exec_Master_Log_Pos

 

mysql> show slave status\G

*************************** 1. row ***************************

             Slave_IO_State:

                Master_Host: mk-tacacs-1.auth.as9105.net

                Master_User: repl

                Master_Port: 3306

              Connect_Retry: 60

            Master_Log_File: log-bin.000008

        Read_Master_Log_Pos: 9684

             Relay_Log_File: mysqld-relay-bin.9339637

              Relay_Log_Pos: 233

      Relay_Master_Log_File: log-bin.000008

           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: 9684

            Relay_Log_Space: 0

            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

 

b) reset the slave and bypass the relay logs by configuring the replication again.

 

reset slave;

CHANGE MASTER TO MASTER_HOST='mk-tacacs-1.auth.as9105.net'

CHANGE MASTER TO MASTER_LOG_FILE='log-bin.000008';

CHANGE MASTER TO MASTER_LOG_POS=9684;

start slave;