Hi Mark,

If it helps, this is the same ipa server which I posted in subject
"ipa_check_consistency
alerts and ERR - slapd_poll - Timed out" yesterday.

Thanks.

Kathy.

On Thu, Sep 16, 2021 at 2:57 PM Kathy Zhu wrote:

> Thanks, Mark, for your reply.
>
> The following repeats in /var/log/dirsrv/slapd-EXAMPLE-COM/errors:
> ...
>
> [16/Sep/2021:08:34:27.880349688 -0700] - CRIT - deadlock_threadmain -
> Serious Error---Failed in deadlock detect (aborted at 0x0), err=-30973
> (BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:27.980810867 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
>
> [16/Sep/2021:08:34:27.981036823 -0700] - CRIT - deadlock_threadmain -
> Serious Error---Failed in deadlock detect (aborted at 0x0), err=-30973
> (BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:28.031642976 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
>
> [16/Sep/2021:08:34:28.031856673 -0700] - ERR - trickle_threadmain -
> Serious Error---Failed to trickle, err=-30973 (BDB0087 DB_RUNRECOVERY:
> Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:28.081390783 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
>
> [16/Sep/2021:08:34:28.081634618 -0700] - CRIT - deadlock_threadmain -
> Serious Error---Failed in deadlock detect (aborted at 0x0), err=-30973
> (BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:28.181946001 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
>
> [16/Sep/2021:08:34:28.182160603 -0700] - CRIT - deadlock_threadmain -
> Serious Error---Failed in deadlock detect (aborted at 0x0), err=-30973
> (BDB0087 DB_RUNRECOVERY: Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:28.282366716 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
>
> [16/Sep/2021:08:34:28.282650113 -0700] - ERR - trickle_threadmain -
> Serious Error---Failed to trickle, err=-30973 (BDB0087 DB_RUNRECOVERY:
> Fatal error, run database recovery)
>
> [16/Sep/2021:08:34:28.283083329 -0700] - ERR - libdb - BDB0060 PANIC:
> fatal region error detected; run recovery
> ...
>
> Thanks!
>
> Kathy.
>
>
> On Thu, Sep 16, 2021 at 2:38 PM Mark Reynolds <mreyno...@redhat.com>
> wrote:
>
>>
>> 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, 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
>>
>> 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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>>
>>
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