Re: [ClusterLabs] Antwort: Antw: Antwort: Re: reboot node / cluster standby

[Ken Gaillot]

On 07/11/2017 07:34 AM, philipp.achmuel...@arz.at wrote:
> 
> 
> Mit freundlichen Grüßen / best regards
> *
> Dipl.-Ing. (FH) Philipp Achmüller*
> *
> ARZ Allgemeines Rechenzentrum GmbH*
> UNIX Systems
> 
> A-6020 Innsbruck, Tschamlerstraße 2
> Tel: +43 / (0)50 4009-1917 _
> __philipp.achmuel...@arz.at _ _
> __http://www.arz.at_ 
> Landes- als Handelsgericht Innsbruck, FN 38653v
> DVR: 0419427
> _
> _
> 
> 
> 
> "Ulrich Windl"  schrieb am 06.07.2017
> 09:24:12:
> 
>> Von: "Ulrich Windl" 
>> An: 
>> Datum: 06.07.2017 09:28
>> Betreff: [ClusterLabs] Antw:  Antwort: Re:  reboot node / cluster standby
>>
>> >>>  schrieb am 03.07.2017 um 15:30 in
> Nachricht
>> :
>> > Ken Gaillot  schrieb am 29.06.2017 21:15:59:
>> >
>> >> Von: Ken Gaillot 
>> >> An: Ludovic Vaugeois-Pepin , Cluster Labs - All
>> >> topics related to open-source clustering welcomed
>> > 
>> >> Datum: 29.06.2017 21:19
>> >> Betreff: Re: [ClusterLabs] reboot node / cluster standby
>> >>
>> >> On 06/29/2017 01:38 PM, Ludovic Vaugeois-Pepin wrote:
>> >> > On Thu, Jun 29, 2017 at 7:27 PM, Ken Gaillot 
>> > wrote:
>> >> >> On 06/29/2017 04:42 AM, philipp.achmuel...@arz.at wrote:
>> >> >>> Hi,
>> >> >>>
>> >> >>> In order to reboot a Clusternode i would like to set the node to
>> > standby
>> >> >>> first, so a clean takeover for running resources can take in place.
>> >> >>> Is there a default way i can set in pacemaker, or do i have to
> setup
>> > my
>> >> >>> own systemd implementation?
>> >> >>>
>> >> >>> thank you!
>> >> >>> regards
>> >> >>> 
>> >> >>> env:
>> >> >>> Pacemaker 1.1.15
>> >> >>> SLES 12.2
>> >> >>
>> >> >> If a node cleanly shuts down or reboots, pacemaker will move all
>> >> >> resources off it before it exits, so that should happen as you're
>> >> >> describing, without needing an explicit standby.
>> >> >
>> >
>> > how does this work when evacuating e.g. 5 nodes out of a 10 node
> cluster
>> > at the same time?
>>
>> What is the command to to do that? If doing it sequentially, I'd
>> wait before the DC returns to IDLE state before starting the next
>> command. One rule of cluster is "be patient!" ;-)
>> [...]
> 
> on other cluster-software i used the standby function to free several
> Nodes from Resources in parallel and issued a distributed shutdown from
> my jumphost afterwards. when resource move is beeing initiated during
> server shutdown i think i have to do it sequential, or does pacemaker
> can handle shutdown command from several nodes parallel?
> 
>>
>> Regards,
>> Ulrich

Pacemaker can shutdown any number of nodes in parallel, though of course
if there is some time between each, there may be unnecessary resource
migrations as resources move to a node that is soon to be shut down
itself and so have to move again. If they are shut down within a few
seconds, Pacemaker will only have to move (or stop) resources once.

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[ClusterLabs] Antwort: Antw: Antwort: Re: reboot node / cluster standby

[philipp . achmueller]

Mit freundlichen Grüßen / best regards 

Dipl.-Ing. (FH) Philipp Achmüller

ARZ Allgemeines Rechenzentrum GmbH
UNIX Systems

A-6020 Innsbruck, Tschamlerstraße 2 
Tel: +43 / (0)50 4009-1917 
philipp.achmuel...@arz.at 
http://www.arz.at 
Landes- als Handelsgericht Innsbruck, FN 38653v 
DVR: 0419427




"Ulrich Windl"  schrieb am 06.07.2017 
09:24:12:

> Von: "Ulrich Windl" 
> An: 
> Datum: 06.07.2017 09:28
> Betreff: [ClusterLabs] Antw:  Antwort: Re:  reboot node / cluster 
standby
> 
> >>>  schrieb am 03.07.2017 um 15:30 in 
Nachricht
> :
> > Ken Gaillot  schrieb am 29.06.2017 21:15:59:
> > 
> >> Von: Ken Gaillot 
> >> An: Ludovic Vaugeois-Pepin , Cluster Labs - All
> >> topics related to open-source clustering welcomed 
> > 
> >> Datum: 29.06.2017 21:19
> >> Betreff: Re: [ClusterLabs] reboot node / cluster standby
> >> 
> >> On 06/29/2017 01:38 PM, Ludovic Vaugeois-Pepin wrote:
> >> > On Thu, Jun 29, 2017 at 7:27 PM, Ken Gaillot  
> > wrote:
> >> >> On 06/29/2017 04:42 AM, philipp.achmuel...@arz.at wrote:
> >> >>> Hi,
> >> >>>
> >> >>> In order to reboot a Clusternode i would like to set the node to 
> > standby
> >> >>> first, so a clean takeover for running resources can take in 
place.
> >> >>> Is there a default way i can set in pacemaker, or do i have to 
setup 
> > my
> >> >>> own systemd implementation?
> >> >>>
> >> >>> thank you!
> >> >>> regards
> >> >>> 
> >> >>> env:
> >> >>> Pacemaker 1.1.15
> >> >>> SLES 12.2
> >> >>
> >> >> If a node cleanly shuts down or reboots, pacemaker will move all
> >> >> resources off it before it exits, so that should happen as you're
> >> >> describing, without needing an explicit standby.
> >> > 
> > 
> > how does this work when evacuating e.g. 5 nodes out of a 10 node 
cluster 
> > at the same time?
> 
> What is the command to to do that? If doing it sequentially, I'd 
> wait before the DC returns to IDLE state before starting the next 
> command. One rule of cluster is "be patient!" ;-)
> [...]

on other cluster-software i used the standby function to free several 
Nodes from Resources in parallel and issued a distributed shutdown from my 
jumphost afterwards. when resource move is beeing initiated during server 
shutdown i think i have to do it sequential, or does pacemaker can handle 
shutdown command from several nodes parallel?

> 
> Regards,
> Ulrich
> 
> 
> 
> ___
> Users mailing list: Users@clusterlabs.org
> http://lists.clusterlabs.org/mailman/listinfo/users
> 
> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://bugs.clusterlabs.org

___
Users mailing list: Users@clusterlabs.org
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Project Home: http://www.clusterlabs.org
Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
Bugs: http://bugs.clusterlabs.org