RHDS WARNING: userRoot: entry cache size is less than db size

Solution Verified - Updated -

Issue

This morning we had a Production outage wherein our users were unable to authenticate to RHDS. A restart of the service immediately resolved the issue, but we would like to understand what caused it.

I do see this message in the log file "/var/log/dirsrv/slapd-t2rgrds701/errros" and I would like to understand it better.

WARNING: userRoot: entry cache size 10485760B is less than db size 463101952B; We recommend to increase the entry cache size nsslapd-cachememsize

It looks like something we need to tune. My suspicion is it might have something to do with why the DirSrv was not responding to LDAP queries this morning.

Environment

  • Red Hat Directory Server (RHDS) 9.1

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