On 9/16/21 5:20 PM, Kathy Zhu via FreeIPA-users wrote:
Hi List,
One of my ipa server's database had issue and left many log entries
like the following in messages and slapd errors log:
*Sep 16 08*:34:28 ipa0 ns-slapd: [16/Sep/2021:08:34:28.886632992
-0700] - ERR - libdb - BDB0060 PANIC: fatal region error detected; run
recovery
*Sep 16 08*:34:29 ipa0 ns-slapd: [16/Sep/2021:08:34:28.987593487
-0700] - ERR - libdb - BDB0060 PANIC: fatal region error detected; run
recovery
*Sep 16 08*:34:29 ipa0 ns-slapd: [16/Sep/2021:08:34:29.035181321
-0700] - ERR - libdb - BDB0060 PANIC: fatal region error detected; run
recovery
Is there anything else in the error log around these messages? This is
kind of a generic error, and increasing the DN cache is not a guarantee
it will resolve this.
Restart ipa fixed the issue. I googled for root cause and found the
verified solution - https://access.redhat.com/solutions/3098131
<https://access.redhat.com/solutions/3098131>, which is to increase
nsslapd-dncachememsize to a reasonable value (>150MB). This sounds
like easy, however, all slapd cache parameters are related. Red Hat
Directory Server performance tuning guide explain a bit:
https://access.redhat.com/documentation/en-us/red_hat_directory_server/10/html/performance_tuning_guide/memoryusage
<https://access.redhat.com/documentation/en-us/red_hat_directory_server/10/html/performance_tuning_guide/memoryusage>
However, I wonder if there is a better guide.
Not really :-) There is a RHDS 11 version, but I think the performance
tuning part is the same as RHDS 10.
Mark
Thanks.
Kathy.
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