5:58 a.m.
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Yes, pacemaker manages the engine. That part is working fine, the engine =
restarts on the remaining node without problems.=20=0D=0AIt's just that t=
he guests don't come back up until the powered down node has been fenced =
manually.=0D=0A=0D=0A-----Urspr=C3=BCngliche Nachricht-----=0D=0A> Von:Ba=
rak Azulay <bazulay(a)redhat.com <mailto:bazulay@redhat.com> >=0D=0A> Gesen=
det: Mon 17 November 2014 11:35=0D=0A> An: Patrick Lottenbach <pl(a)a-bot.c=
h <mailto:pl@a-bot.ch> >=0D=0A> CC: users(a)ovirt.org <mailto:users@ovirt.o=
rg>=20=0D=0A> Betreff: Re: [ovirt-users] Fake power management=3F=0D=0A>=20=
=0D=0A>=20=0D=0A>=20=0D=0A> ----- Original Message -----=0D=0A> > From:
"=
mots" <mots(a)nepu.moe <mailto:mots@nepu.moe> >=0D=0A> > To:
users(a)ovirt.or=
g <mailto:users@ovirt.org>=20=0D=0A> > Sent: Friday, November 14, 2014 4:=
54:08 PM=0D=0A> > Subject: [ovirt-users] Fake power management=3F=0D=0A> =
=20=0D=0A> > Fake power management=3F Hello,=0D=0A>
>=20=0D=0A> > I'm bu=
ilding a small demonstration system for our sales
team to take to a=0D=0A=
> customer so that they can show them our solutions.=0D=0A>
> Hardware:=
Two Intel NUC's, a 4 port switch and a laptop.=0D=0A> >
Engine: Runs as =
a VM on one of the NUCs, which one it runs on is determined=0D=0A> > by p=
acemaker.=0D=0A> > Storage: Also managed by pacemaker, it's drbd backed a=
nd accessed with iscsi.=0D=0A> > oVirt version: 3.5=0D=0A> > OS: CentOS 6=
=2E6=0D=0A> >=20=0D=0A> > The idea is to have our sales representative (o=
r the potential customer=0D=0A> > himself) randomly pull the plug on one =
of the NUCs to show that the system=0D=0A> > stays operational when part =
of the hardware fails.=0D=0A>=20=0D=0A> I assume you are aware that the e=
ngine might fence the node it is running on ...=20=0D=0A> Or do you use p=
acemaker to run the engine as well =3F=0D=0A>=20=0D=0A> > My problem is t=
hat I don't have any way to implement power management, so the=0D=0A> > E=
ngine can't fence nodes and won't restart guests that were running on the=
=0D=0A> > node which lost power. In pacemaker I can just configure fencin=
g over SSH or=0D=0A> > even disable the requirement to do so completely. =
Is there something similar=0D=0A> > for oVirt, so that the Engine will co=
nsider a node which it can't connect to=0D=0A> > to be powered down=3F=0D=
=0A> >=20=0D=0A> > Regards,=0D=0A> >=20=0D=0A> > mots=0D=0A>
>=20=0D=0A> =
_______________________________________________=0D=0A> > Users
mailing =
list=0D=0A> > Users(a)ovirt.org
<mailto:Users@ovirt.org>=20=0D=0A> > http:/=
/lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/l=
istinfo/users>=20=0D=0A> >=20=0D=0A>=20=0D=0A=0D=0A
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://ww=
w.w3.org/TR/html4/loose.dtd"><html>=0A<head>=0A <meta
name=3D"Generator"=
content=3D"Zarafa WebApp v7.1.10-44973">=0A <meta
http-equiv=3D"Content=
-Type" content=3D"text/html; charset=3Dutf-8">=0A <title>AW:
[ovirt-user=
s] Fake power management=3F</title>=0A</head>=0A<body>=0A<font
face=3D"ta=
homa" size=3D"2">Yes, pacemaker manages the engine. That part is working
=
fine, the engine restarts on the remaining node without problems. <br>It'=
s just that the guests don't come back up until the powered down node has=
been fenced manually.</font><br><pre style=3D"white-space:
-moz-pre-wrap=
; white-space: -pre-wrap; white-space: -o-pre-wrap; white-space: pre-wrap=
; word-wrap: break-word;" wrap=3D"">-----Urspr=C3=BCngliche
Nachricht----=
-<br>> Von:Barak Azulay <<a
href=3D"mailto:bazulay@redhat.com">bazu=
lay(a)redhat.com</a>&gt;<br>&gt; Gesendet: Mon 17 November 2014
11:35<br>&g=
t; An: Patrick Lottenbach <<a
href=3D"mailto:pl@a-bot.ch">pl@a-bot.ch<=
/a>><br>> CC: <a
href=3D"mailto:users@ovirt.org">users@ovirt.org</a=
<br>> Betreff: Re: [ovirt-users] Fake power
management=3F<br>> <br=
> <br>> <br>> ----- Original Message
-----<br>> > From: "=
mots" <<a
href=3D"mailto:mots@nepu.moe">mots@nepu.moe</a>><br>>
=
> To: <a
href=3D"mailto:users@ovirt.org">users@ovirt.org</a><br>>
&=
gt; Sent: Friday, November 14, 2014 4:54:08 PM<br>> > Subject: [ovi=
rt-users] Fake power management=3F<br>> > <br>> >
Fake power =
management=3F Hello,<br>> > <br>> > I'm
building a small demo=
nstration system for our sales team to take to a<br>> > customer so=
that they can show them our solutions.<br>> > Hardware: Two Intel =
NUC's, a 4 port switch and a laptop.<br>> > Engine: Runs as a VM
on=
one of the NUCs, which one it runs on is determined<br>> > by pace=
maker.<br>> > Storage: Also managed by pacemaker, it's drbd backed
=
and accessed with iscsi.<br>> > oVirt version: 3.5<br>>
> OS:=
CentOS 6.6<br>> > <br>> > The idea is to have our
sales repr=
esentative (or the potential customer<br>> > himself) randomly pull=
the plug on one of the NUCs to show that the system<br>> > stays o=
perational when part of the hardware fails.<br>> <br>> I assume
you=
are aware that the engine might fence the node it is running on ... <br>=
> Or do you use pacemaker to run the engine as well =3F<br>>
<br>&g=
t; > My problem is that I don't have any way to implement power manage=
ment, so the<br>> > Engine can't fence nodes and won't restart
gues=
ts that were running on the<br>> > node which lost power. In pacema=
ker I can just configure fencing over SSH or<br>> > even disable th=
e requirement to do so completely. Is there something similar<br>> >=
; for oVirt, so that the Engine will consider a node which it can't conne=
ct to<br>> > to be powered down=3F<br>> >
<br>> > Regar=
ds,<br>> > <br>> > mots<br>> >
<br>> > __________=
_____________________________________<br>> > Users mailing
list<br>=
> > <a
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br>>
=
> <a href=3D"http://lists.ovirt.org/mailman/listinfo/users"
target=3D"=
_blank">http://lists.ovirt.org/mailman/listinfo/users</a>&l...
> <b=
r>> </pre>=0A</body>=0A</html>
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