[ClusterLabs] Pacemaker confirm that node was fenced successfully

[Ken Gaillot]

On Mon, 2018-08-13 at 18:13 +0200, FeldHost™ Admin wrote:
> Hello, thanks for reply, so basiclly, can I leverage existing cli
> tools and do for ex. call crm node fence xyz?

Yes

> 
> S pozdravem Kristián Feldsam
> Tel.: +420 773 303 353, +421 944 137 535
> E-mail.: support at feldhost.cz
> 
> www.feldhost.cz - FeldHost™ – Hostingové služby
> prispôsobíme vám. Máte špecifické požiadavky? Poradíme si s nimi.
> 
> FELDSAM s.r.o.
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> 
> > On 13 Aug 2018, at 17:15, Ken Gaillot <kgaillot at redhat.com> wrote:
> > 
> > On Sat, 2018-08-11 at 17:38 +0200, FeldHost™ Admin wrote:
> > > Hi all, I have question:
> > > 
> > > We have Corosync/Pacemaker cluster running for KVM
> > > virtualisation. VM
> > > Instances are managed by external software (Opennebula). To
> > > achieve
> > > automatic migration of running VMs from failed node, external sw
> > > need
> > > fence node and confirm that was fenced successfully. When node
> > > fail,
> > > it will be fenced by cluster stack, so I don't want to do second
> > > fencing by external sw, but instead I want to connect to alive
> > > nodes
> > > and get fencing status. Is there some API in pacemaker to get it
> > > or I
> > > need to somehow parse result from pcs/crmsh?
> > 
> > Hi,
> > 
> > You can call stonith_admin, or use the pacemaker fencing client API
> > (used for example by DLM). The API documentation is rudimentary:
> > 
> > http://clusterlabs.org/pacemaker/doxygen/Pacemaker-1.1.18/stonith-n
> > g_8h.html
> > 
> > Be sure you click on "stonith_api_operations_s" for descriptions of
> > the
> > API functions.
> > 
> > Whether you use the API or stonith_admin, pacemaker will not fence
> > twice if a request arrives while another identical request is in
> > progress.
> > 
> > > Thank you for reply.
> > > 
> > > S pozdravem Kristián Feldsam
> > > Tel.: +420 773 303 353, +421 944 137 535
> > > E-mail.: support at feldhost.cz
> > > 
> > > www.feldhost.cz - FeldHost™ – Hostingové služby
> > > prispôsobíme vám. Máte špecifické požiadavky? Poradíme si s nimi.
> > > 
> > > FELDSAM s.r.o.
> > > V rohu 434/3
> > > Praha 4 – Libuš, PSČ 142 00
> > > IČ: 290 60 958, DIČ: CZ290 60 958
> > > C 200350 vedená u Městského soudu v Praze
> > > 
> > > Banka: Fio banka a.s.
> > > Číslo účtu: 2400330446/2010
> > > BIC: FIOBCZPPXX
> > > IBAN: CZ82 2010 0000 0024 0033 0446
> > > 
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> > -- 
> > Ken Gaillot <kgaillot at redhat.com>
> > _______________________________________________
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> > 
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> > h.pdf
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-- 
Ken Gaillot <kgaillot at redhat.com>