On 9/17/21 12:26 AM, Kathy Zhu via FreeIPA-users wrote:
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.
Hi Kathy,
The slapd_poll message is likely not related to the DB_PANIC. Slap_poll
here means that the server was not able to send a result (ldap client
not reading ?) for longer than ioblock-timeout.
The DB panic is a fatal error of the database that requires a restart of
the server. The restart will trigger a DB recovery. It is difficult to
know the RC of the DB panic. According to the initial message DB was
running a deadlock resolution during DB panic, you may try to give
priority to updates (setting nsslapd-db-deadlock-policy: 6) that can
significantly reduces db deadlocks.
regards
thierry
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 <mailto: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
<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.
_______________________________________________
FreeIPA-users mailing list --freeipa-users@lists.fedorahosted.org
<mailto:freeipa-users@lists.fedorahosted.org>
To unsubscribe send an email tofreeipa-users-le...@lists.fedorahosted.org
<mailto:freeipa-users-le...@lists.fedorahosted.org>
Fedora Code of
Conduct:https://docs.fedoraproject.org/en-US/project/code-of-conduct/
<https://docs.fedoraproject.org/en-US/project/code-of-conduct/>
List Guidelines:https://fedoraproject.org/wiki/Mailing_list_guidelines
<https://fedoraproject.org/wiki/Mailing_list_guidelines>
List
Archives:https://lists.fedorahosted.org/archives/list/freeipa-users@lists.fedorahosted.org
<https://lists.fedorahosted.org/archives/list/freeipa-users@lists.fedorahosted.org>
Do not reply to spam on the list, report
it:https://pagure.io/fedora-infrastructure
<https://pagure.io/fedora-infrastructure>
--
Directory Server Development Team
_______________________________________________
FreeIPA-users mailing list -- freeipa-users@lists.fedorahosted.org
To unsubscribe send an email to freeipa-users-le...@lists.fedorahosted.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedorahosted.org/archives/list/freeipa-users@lists.fedorahosted.org
Do not reply to spam on the list, report it:
https://pagure.io/fedora-infrastructure
_______________________________________________
FreeIPA-users mailing list -- freeipa-users@lists.fedorahosted.org
To unsubscribe send an email to freeipa-users-le...@lists.fedorahosted.org
Fedora Code of Conduct:
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives:
https://lists.fedorahosted.org/archives/list/freeipa-users@lists.fedorahosted.org
Do not reply to spam on the list, report it:
https://pagure.io/fedora-infrastructure
