Am Montag, 9. Dezember 2013, 07:42:59 schrieb Masopust, Christian: > > >> If you're using 1.1.10+, > > >> > > >> pcs stonith create fence_pcmk1_ipmi fence_ipmilan \ > > >> > > >> pcmk_host_list="pcmk-1" ipaddr="pcmk-1.ipmi" \ > > >> action="reboot" login="admin" passwd="secret" delay=15 \ > > >> op monitor interval=60s > > >> > > >> pcs stonith create fence_pcmk2_ipmi fence_ipmilan \ > > >> > > >> pcmk_host_list="pcmk-2" ipaddr="pcmk-2.ipmi" \ > > >> action="reboot" login="admin" passwd="secret" delay=15 \ > > >> op monitor interval=60s > > >> > > >> is sufficient. > > > > > > Hi, > > > > > > just two questions about setting these stonith: > > > > > > - shouldn't the delay's be different to avoid a stonith-battle? > > > > As Emmanuel said, yes, it is needed to avoid dual-fencing in two-node > > clusters, though the issue is not restricted to rhcs (or any HA > > clustering that allows two nodes). > > > > The node with the 'delay="15"' will have a 15 second > > head-start, so in a > > network partition triggered fence, the node with the delay > > should always > > live and the node without the delay will be immediately fenced. > > > > > - when creating these stonith I see them both started on one single > > > > > > node. Don't I need some location constraints? Such that > > > > "fence_pcmk1" > > > > > only runs on pcmk2 and vice versa? > > > > What version of pacemaker are you using? > > Hi Digimer, > > first when seeing this behaviour there was version 1.1.8. This weekend > I've updated to 1.1.10 (latest available with CentOS 6.5) and now I see > that fence_pcmk1 is started at pcmk1 and fence_pcmk2 at pcmk2. > Is that correct? To my (probably wrong) understanding it should be > vice-versa, shouldn't it?
fence_pcmk1 is the resource that can fence node pcmk1. If that resource runs on node pcmk1 it is useless since node 2 has to be able to fence node 1. Add location constraints that prevent the fencing resource that can fence node 1 trunning on node 1. -- Mit freundlichen Grüßen, Michael Schwartzkopff -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64, +49 (162) 165 0044 Franziskanerstraße 15, 81669 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Axel von der Ohe, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein
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