[ClusterLabs] Cannot allocate memory in pgsql_monitor

[Strahil Nikolov]

systemd services do not use ulimit, so you need to check "systemctl show pacemaker.service" for any clues.
I have seen similar error in SLES 12 SP2 when the maximum tasks was reduced and we were hitting the limit.

Best Regards,
Strahil Nikolov






В четвъртък, 10 декември 2020 г., 13:14:14 Гринуич+2, Ларионов Андрей Валентинович <andrey.larionov at mts.ru> написа: 





  


Hello,

 

We have PostgreSQL under pacemaker/corosync management 

and sometimes we catch problem like this:

Dec  9 18:51:15 prod-inside-tvh-pgsql1 lrmd[13405]:  notice: pgsql_monitor_8000:34884:stderr [ /usr/lib/ocf/lib/heartbeat/ocf-shellfuncs: fork: Cannot allocate memory ]

Dec  9 18:51:15 prod-inside-tvh-pgsql1 crmd[13409]:  notice: prod-inside-tvh-pgsql1-pgsql_monitor_8000:13 [ /usr/lib/ocf/lib/heartbeat/ocf-shellfuncs: fork: Cannot allocate memory\n ]

Dec  9 18:51:15 prod-inside-tvh-pgsql1 crmd[13409]:  notice: Result of notify operation for pgsql on prod-inside-tvh-pgsql1: 0 (ok)

Dec  9 18:51:15 prod-inside-tvh-pgsql1 crmd[13409]:  notice: prod-inside-tvh-pgsql1-pgsql_monitor_8000:13 [ /usr/lib/ocf/lib/heartbeat/ocf-shellfuncs: fork: Cannot allocate memory\n ]

Dec  9 18:51:15 prod-inside-tvh-pgsql1 pgsql(pgsql)[35130]: INFO: stop_escalate(or stop_escalate_in_slave) time is adjusted to 50 based on the configured timeout.

Dec  9 18:51:15 prod-inside-tvh-pgsql1 pgsql(pgsql)[35130]: INFO: server shutting down

Dec  9 18:51:17 prod-inside-tvh-pgsql1 pgsql(pgsql)[35130]: INFO: PostgreSQL is down

Dec  9 18:51:17 prod-inside-tvh-pgsql1 pgsql(pgsql)[35130]: INFO: Changing pgsql-status on prod-inside-tvh-pgsql1 : HS:async->STOP.

Dec  9 18:51:17 prod-inside-tvh-pgsql1 crmd[13409]:  notice: Result of stop operation for pgsql on prod-inside-tvh-pgsql1: 0 (ok)

 

Main - “/usr/lib/ocf/lib/heartbeat/ocf-shellfuncs: fork: Cannot allocate memory”.

But memory is always enough.

This is virtual machine with Linux 4.14.35-1818.4.7.el7uek.x86_64

and

pacemaker 1.1.19-8.el7_6.4

corosync 2.4.3-4.el7

(all from linux repository).

 

Please, help us to resolve this problem with “Cannot allocate memory”.

May be we need some additional settings on OS or upgrade to fresh pacemaker/corosync version where this issue resolved or some other?

 

 

--

WBR, 

Andrey Larionov

 



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