Opened 15 years ago

Last modified 15 years ago

#174 closed task

Nagios plugin to check for different generation ID error message — at Version 1

Reported by: ezyang Owned by:
Priority: normal Milestone:
Component: internals Keywords:
Cc:

Description (last modified by ezyang)

Check for the error message: 

[23/Sep/2010:15:18:56 -0400] NSMMReplicationPlugin - agmt="cn="GSSAPI
Replication to whole-enchilada.mit.edu"" (whole-enchilada:389): Replica has a
different generation ID than the local data.

which indicates something has gone wrong with replication. This message does not appear to be picked up by our existing MMR checks.

Old text: In the nsds50ruv attribute, replication agreements record a "generation ID" which prevents two masters initialized from different sources from attempting to overwrite each other and cause a mess. Unfortunately, this safety mechanism also means that replication doesn't work, and furthermore, while this will result in a lot of spew to the LDAP error log, this won't show up in the usual status field. We should check that all of the replication generations on our servers are consistent.

Change History (1)

comment:1 Changed 15 years ago by ezyang

  • Description modified (diff)
  • Summary changed from Nagios plugin to ensure replication generations are correct to Nagios plugin to check for different generation ID error message

Rewrote proposal based on conversation with Mitch.

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