Periodically getting email from cron: Unable to determine enabled services from ldap.

[skyflyer]

Hi!

I'm periodically getting email from cron with the content (apx. every one-two days):
Unable to determine enabled services from ldap.
Enabled services read from cache. Service list may be inaccurate.

What also usually happens a few hours apart from that email is that cluster migrates from one node to another. For instance, today, I got this message at 4:50 AM, whereas cluster apparently migrated (according to zenoss modclusterd monitoring) at 2:25 AM. So those two are seem to not be directly related.

The setup is: two MTA nodes, two ZMSS nodes (in a RHEL fail-over cluster).

The thing is, that everything seems to be working. Any ideas why I'd be getting this email from cron? Oh, the source is MTA1 or MTA2, not the ZMSS!

Can someone explain:
- who triggers the check for running services?
- how? (what does it check)?

Could it be that the MTA node is unable to access LDAP for some reason (maybe a network anomaly) and then quites and restarts? Because I can see LDAP related exceptions in the log file zmconfigd.log at 4:50AM.

Thanks,
Miha.