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MySQL replication problem in an NLB SnapCenter configuration

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Applies to

  • SnapCenter Server 4.0 and above
  • NLB configuration 


Issue

Customers get errors and (if configured) an email every minute reporting an issue with the MySQL replication. 

Following error appears:
Replication of the repository failed on the database server 

The reason and result of the failure is seen as following:

Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from position > file size'

The replica is requesting data at a certain point in the log (its current position), but the master's log file does not reach that point (so there are missing entries). Replication stops because this is a logic error.

 

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