[gpfsug-discuss] [External] Re: Removing GUI nodes

[Nicolas CALIMET]

Hi,

You need to remove the perfmon role on all nodes of the cluster that were monitored (incl. GUI nodes) and delete the perfmon config of the cluster (or the other way around, cannot check right now). The gpfs.gss.pmsensor RPM can then be removed from all nodes where it was installed (incl. GUI) and gpfs.gss.pmcollector from GUI servers.

HTH
________________________________
From: gpfsug-discuss <gpfsug-discuss-bounces at gpfsug.org> on behalf of Jonathan Buzzard <jonathan.buzzard at strath.ac.uk>
Sent: Sunday, February 8, 2026 12:06:18 PM
To: gpfsug-discuss at gpfsug.org <gpfsug-discuss at gpfsug.org>
Subject: [External] Re: [gpfsug-discuss] Removing GUI nodes

On 07/02/2026 23:00, Jan-Frode Myklebust wrote:
> mmperfmon config update --collectors othernode1,othernode2
>

That just pushes the performance monitoring to other nodes. I am pretty
sure prior to installing the GUI nodes I didn't have any "performance
monitoring" and having never used it would like to get back to that
state of affairs :-)

[root at gpfs0 ~]# mmperfmon config delete --all
mmperfmon: The performance monitoring configuration cannot be deleted
while there are nodes designated for performance monitoring. Please
remove the designation with mmchnode --noperfmon.
mmperfmon: Command failed. Examine previous error messages to determine
cause.

Noting that I have already attempted to designate my one remaining
performance monitoring node (aka GUI node) as not doing that with
mmchnode which does not seem to do anything.

Noting that the manpage for mmperfmon say for config delete --all

  removes the entire performance monitoring configuration from
  IBM Storage Scale.

I have tried upgrading the GUI node to 5.2.3 to match the rest of the
system, and running the mmchnode --noperfmon on the node itself with
GPFS both started and stopped. None of that made any difference :-( At
least I can run mmchconfig release=LATEST now.

Interestingly mmlscluster shows the two DSS-G nodes as having a
designation of "quorum-manager-perfmon" and the GUI node as having no
designation. Noting the two DSS-G nodes don't have the pmcollector or
pmsensors RPM's installed.

I suspect I am going to need to open a ticket for this one as something
wacky is going on.


JAB.

--
Jonathan A. Buzzard                         Tel: +44141-5483420
HPC System Administrator, ARCHIE-WeSt.
University of Strathclyde, John Anderson Building, Glasgow. G4 0NG

_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at gpfsug.org
https://apc01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fgpfsug.org%2Fmailman%2Flistinfo%2Fgpfsug-discuss_gpfsug.org&data=05%7C02%7Cncalimet%40lenovo.com%7Cb509d9568ff940ac354b08de670262ce%7C5c7d0b28bdf8410caa934df372b16203%7C0%7C0%7C639061457179974771%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=fPtDlH1XDo0Z9BzSX4nHkq2dI9czuS7bWC5Xr4XUdwE%3D&reserved=0<http://gpfsug.org/mailman/listinfo/gpfsug-discuss_gpfsug.org>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://gpfsug.org/pipermail/gpfsug-discuss_gpfsug.org/attachments/20260208/2d338fbb/attachment.html>