Ken Gaillot <kgail...@redhat.com> schrieb am 29.06.2017 21:15:59: > Von: Ken Gaillot <kgail...@redhat.com> > An: Ludovic Vaugeois-Pepin <ludovi...@gmail.com>, Cluster Labs - All > topics related to open-source clustering welcomed <users@clusterlabs.org> > 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 <kgail...@redhat.com> 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? > > This makes me wonder about timeouts. Specifically OS/systemd timeouts. > > Say the node being shut down or rebooted holds a resource as a master, > > and it takes a while for the demote to complete, say 100 seconds (less > > than the demote timeout of 120s in this hypothetical scenario). Will > > the OS/systemd wait until pacemaker exits cleanly on a regular CentOS > > or Debian? > > Yes. The pacemaker systemd unit file uses TimeoutStopSec=30min. > > > > > > >> Explicitly doing standby first would be useful mainly if you want to > >> manually check the results of the takeover before proceeding with the > >> reboot, and/or if you want the node to come back in standby mode next > >> time it joins. > > _______________________________________________ > 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
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