[ClusterLabs] Antw: Re: Antw: [EXT] Cluster breaks after pcs unstandby node

Steffen Vinther Sørensen svinther at gmail.com
Mon Jan 18 04:00:12 EST 2021


I have persistent journal, but 'journalctl -b -1' was empty in this
case, so it might not be optimally configured. And centralized logging
is on the todo list

btw. about the fencing, I have set ' HandlePowerKey=ignore' in
(for this hardware, I can find no bios settings on how to react to
power key being pressed, so can not be set to instant-off)

Now when a node is fenced it goes down more quickly, and its only
journal output is:
Jan 18 09:33:19 kvm03-node03 systemd-logind[4354]: Power key pressed.
Jan 18 09:33:24 kvm03-node03 systemd-logind[4354]: Power key pressed.

So it seems it needs to be pressed twice with 5 sec delay, and by
looking at the hardware console, the system does not reboot before
about 09.33.27 ( 8 secs totally)

When the node is back online, 'journalctl -b -1' only reports the first
Jan 18 09:33:19 kvm03-node03 systemd-logind[4354]: Power key pressed.

The second line was never written to persistent journal

On Mon, Jan 18, 2021 at 8:49 AM Ulrich Windl
<Ulrich.Windl at rz.uni-regensburg.de> wrote:
> >>> Steffen Vinther Sørensen <svinther at gmail.com> schrieb am 16.01.2021 um
> 19:28 in
> Nachricht
> <CALhdMBho79Kd7XjV2BvD+-J5i+94vKejnJYB5UEjG=w_hG1Scg at mail.gmail.com>:
> > Hi and thank you for the insights
> Hi!
> ...
> > I just did a test after the latest adjustments with colocations etc.
> > trying to standby node02, ends up with node02 being fenced before
> > migrations complete. Unfortunately logs from node02 was lost
> Don't you have a persistent journal on node2? Maybe it's a good idea to  make
> all nodes log to an external syslog server, at least until your problems are
> fixed. That would also have the benefit that you get a better global insight of
> the sequence of events...
> ...
> Regards,
> Ulrich
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