Re: [ovirt-users] Fake power management?
by mots
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-----Urspr=C3=BCngliche Nachricht-----=0D=0A=0D=0A> Von:Barak Azulay <baz=
ulay(a)redhat.com <mailto:bazulay@redhat.com> >=0D=0A> Gesendet: Mon 17 Nov=
ember 2014 23:30=0D=0A> An: Patrick Lottenbach <pl(a)a-bot.ch <mailto:pl@a-=
bot.ch> >=0D=0A> CC: users(a)ovirt.org <mailto:users@ovirt.org>=20=0D=0A> B=
etreff: Re: AW: [ovirt-users] Fake power management=3F=0D=0A>=20=0D=0A> W=
ell you can hack the solution in the form of replacing the fencing master=
script to always return success (Eli can help you with that),=0D=0A> and=
define an imaginary fencing device on each host ... meaning that the fen=
cing command will always succeeds.=0D=0A>=20=0D=0A=0D=0AThis sounds inter=
esting. It's exactly what I need.=0D=0A=0D=0A> But this may be risky ... =
as you might end up with the same VM running on 2 hosts.=20=0D=0A=0D=0AAs=
I see it, this would only happen if someone unplugs the network interfac=
e. I know this is a way to break the cluster. If someone unplugs the inte=
rface, then everything gets started twice anyways thanks to pacemaker bei=
ng configured to ignore the lack of quorum and it would look silly in fro=
nt of the customer.=0D=0A=0D=0A> And one last note ... when you disconnec=
t one of the hosts in the demo you mentioned, I think you'll be better to=
disconnect the host that does not run the engine ...=0D=0A=20=0D=0AIt ju=
st gets restarted on the remaining node and resumes operation. It even re=
members which guests ran on which host.=0D=0AThat part is really safe. Th=
e storage is configured to only report data as written when the write ope=
ration has finished on all (currently online) nodes, disk write caches ar=
e turned off in lvm.conf. PostreSQL is resilient enough to survive a cras=
h like this.=0D=0A=0D=0AOr am I missing something that might break=3F=0D=0A=
=0D=0A> Barak=20=0D=0A=0D=0Amots=0D=0A=0D=0A>=20=0D=0A> ----- Original Me=
ssage -----=0D=0A> > From: "mots" <mots(a)nepu.moe <mailto:mots@nepu.moe> >=
=0D=0A> > To: "Barak Azulay" <bazulay(a)redhat.com <mailto:bazulay@redhat.c=
om> >=0D=0A> > Cc: users(a)ovirt.org <mailto:users@ovirt.org>=20=0D=0A> > S=
ent: Monday, November 17, 2014 12:58:20 PM=0D=0A> > Subject: AW: [ovirt-u=
sers] Fake power management=3F=0D=0A> >=20=0D=0A> > Yes, pacemaker manage=
s the engine. That part is working fine, the engine=0D=0A> > restarts on =
the remaining node without problems.=0D=0A> > It's just that the guests d=
on't come back up until the powered down node has=0D=0A> > been fenced ma=
nually.=0D=0A> >=20=0D=0A> > -----Urspr=C3=BCngliche Nachricht-----=0D=0A=
> > > Von:Barak Azulay <bazulay(a)redhat.com <mailto:bazulay@redhat.com> <=
mailto:bazulay@redhat.com <mailto:bazulay@redhat.com> > >=0D=0A> > > Gese=
ndet: Mon 17 November 2014 11:35=0D=0A> > > An: Patrick Lottenbach <pl@a-=
bot.ch <mailto:pl@a-bot.ch> <mailto:pl@a-bot.ch <mailto:pl@a-bot.ch> > >=
=0D=0A> > > CC: users(a)ovirt.org <mailto:users@ovirt.org> <mailto:users@o=
virt.org <mailto:users@ovirt.org> >=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.m=
oe <mailto:mots@nepu.moe> <mailto:mots@nepu.moe <mailto:mots@nepu.moe> >=
>=0D=0A> > > > To: users(a)ovirt.org <mailto:users@ovirt.org> <mailto:use=
rs(a)ovirt.org <mailto:users@ovirt.org> >=0D=0A> > > > Sent: Friday, Novemb=
er 14, 2014 4:54:08 PM=0D=0A> > > > Subject: [ovirt-users] Fake power man=
agement=3F=0D=0A> > > >=20=0D=0A> > > > Fake power management=3F Hello,=0D=
=0A> > > >=20=0D=0A> > > > I'm building a small demonstration system for =
our sales team to take to a=0D=0A> > > > customer so that they can show t=
hem our solutions.=0D=0A> > > > Hardware: Two Intel NUC's, a 4 port switc=
h and a laptop.=0D=0A> > > > Engine: Runs as a VM on one of the NUCs, whi=
ch one it runs on is=0D=0A> > > > determined=0D=0A> > > > by pacemaker.=0D=
=0A> > > > Storage: Also managed by pacemaker, it's drbd backed and acces=
sed with=0D=0A> > > > iscsi.=0D=0A> > > > oVirt version: 3.5=0D=0A> > > >=
OS: CentOS 6.6=0D=0A> > > >=20=0D=0A> > > > The idea is to have our sale=
s representative (or the potential customer=0D=0A> > > > himself) randoml=
y pull the plug on one of the NUCs to show that the=0D=0A> > > > system=0D=
=0A> > > > stays operational when part of the hardware fails.=0D=0A> > >=20=
=0D=0A> > > I assume you are aware that the engine might fence the node i=
t is running=0D=0A> > > on ...=0D=0A> > > Or do you use pacemaker to run =
the engine as well =3F=0D=0A> > >=20=0D=0A> > > > My problem is that I do=
n't have any way to implement power management, so=0D=0A> > > > the=0D=0A=
> > > > Engine can't fence nodes and won't restart guests that were runni=
ng on=0D=0A> > > > the=0D=0A> > > > node which lost power. In pacemaker I=
can just configure fencing over SSH=0D=0A> > > > or=0D=0A> > > > even di=
sable the requirement to do so completely. Is there something=0D=0A> > > =
> similar=0D=0A> > > > for oVirt, so that the Engine will consider a node=
which it can't connect=0D=0A> > > > 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:Us=
ers(a)ovirt.org> <mailto:Users@ovirt.org <mailto:Users@ovirt.org> >=0D=0A>=
> > > http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.=
org/mailman/listinfo/users>=20=0D=0A> > > > <" target=3D"_blank">http://l=
ists.ovirt.org/mailman/listinfo/users> <http://lists.ovirt.org/mailman/li=
stinfo/users> ;=0D=0A> > > >=20=0D=0A> > >=20=0D=0A> >=20=0D=0A> >=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-----Urspr=C3=BC=
ngliche Nachricht-----<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"">> Von:Barak Azulay <<a href=3D"mailto:=
bazulay(a)redhat.com">bazulay(a)redhat.com</a>><br>> Gesendet: Mon 17 N=
ovember 2014 23:30<br>> An: Patrick Lottenbach <<a href=3D"mailto:p=
l(a)a-bot.ch">pl(a)a-bot.ch</a>><br>> CC: <a href=3D"mailto:users@ovirt=
=2Eorg">users(a)ovirt.org</a><br>> Betreff: Re: AW: [ovirt-users] Fake p=
ower management=3F<br>> <br>> Well you can hack the solution in the=
form of replacing the fencing master script to always return success (El=
i can help you with that),<br>> and define an imaginary fencing device=
on each host ... meaning that the fencing command will always succeeds.<=
br>> <br><br>This sounds interesting. It's exactly what I need.<br><br=
>> But this may be risky ... as you might end up with the same VM runn=
ing on 2 hosts. <br><br>As I see it, this would only happen if someone un=
plugs the network interface. I know this is a way to break the cluster. I=
f someone unplugs the interface, then everything gets started twice anywa=
ys thanks to pacemaker being configured to ignore the lack of quorum and =
it would look silly in front of the customer.<br><br>> And one last no=
te ... when you disconnect one of the hosts in the demo you mentioned, I =
think you'll be better to disconnect the host that does not run the engin=
e ...<br> <br>It just gets restarted on the remaining node and resumes op=
eration. It even remembers which guests ran on which host.<br>That part i=
s really safe. The storage is configured to only report data as written w=
hen the write operation has finished on all (currently online) nodes, dis=
k write caches are turned off in lvm.conf. PostreSQL is resilient enough =
to survive a crash like this.<br><br>Or am I missing something that might=
break=3F<br><br>> Barak <br><br>mots<br><br>> <br>> ----- Origi=
nal Message -----<br>> > From: "mots" <<a href=3D"mailto:mots@ne=
pu.moe">mots(a)nepu.moe</a>><br>> > To: "Barak Azulay" <<a href=
=3D"mailto:bazulay@redhat.com">bazulay(a)redhat.com</a>><br>> > Cc=
: <a href=3D"mailto:users@ovirt.org">users(a)ovirt.org</a><br>> > Sen=
t: Monday, November 17, 2014 12:58:20 PM<br>> > Subject: AW: [ovirt=
-users] Fake power management=3F<br>> > <br>> > Yes, pacemake=
r manages the engine. That part is working fine, the engine<br>> > =
restarts on the remaining node without problems.<br>> > It's just t=
hat the guests don't come back up until the powered down node has<br>>=
> been fenced manually.<br>> > <br>> > -----Urspr=C3=BCng=
liche Nachricht-----<br>> > > Von:Barak Azulay <<a href=3D"ma=
ilto:bazulay@redhat.com">bazulay(a)redhat.com</a> <mailto:<a href=3D"mai=
lto:bazulay@redhat.com">bazulay(a)redhat.com</a>> ><br>> > >=
Gesendet: Mon 17 November 2014 11:35<br>> > > An: Patrick Lotte=
nbach <<a href=3D"mailto:pl@a-bot.ch">pl(a)a-bot.ch</a> <mailto:<a hr=
ef=3D"mailto:pl@a-bot.ch">pl(a)a-bot.ch</a>> ><br>> > > CC: =
<a href=3D"mailto:users@ovirt.org">users(a)ovirt.org</a> <mailto:<a href=
=3D"mailto:users@ovirt.org">users(a)ovirt.org</a>><br>> > > Bet=
reff: Re: [ovirt-users] Fake power management=3F<br>> > > <br>&g=
t; > > <br>> > > <br>> > > ----- Original Message=
-----<br>> > > > From: "mots" <<a href=3D"mailto:mots@nep=
u.moe">mots(a)nepu.moe</a> <mailto:<a href=3D"mailto:mots@nepu.moe">mots=
@nepu.moe</a>> ><br>> > > > To: <a href=3D"mailto:users=
@ovirt.org">users(a)ovirt.org</a> <mailto:<a href=3D"mailto:users@ovirt.=
org">users(a)ovirt.org</a>><br>> > > > Sent: Friday, Novembe=
r 14, 2014 4:54:08 PM<br>> > > > Subject: [ovirt-users] Fake =
power management=3F<br>> > > > <br>> > > > Fake p=
ower management=3F Hello,<br>> > > > <br>> > > > =
I'm building a small demonstration system for our sales team to take to a=
<br>> > > > customer so that they can show them our solutions=
=2E<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<br>> > > > determined<br>> > =
> > by pacemaker.<br>> > > > Storage: Also managed by p=
acemaker, it's drbd backed and accessed with<br>> > > > iscsi=
=2E<br>> > > > oVirt version: 3.5<br>> > > > OS: =
CentOS 6.6<br>> > > > <br>> > > > The idea is to =
have our sales representative (or the potential customer<br>> > >=
; > himself) randomly pull the plug on one of the NUCs to show that th=
e<br>> > > > system<br>> > > > stays operational =
when part of the hardware fails.<br>> > > <br>> > > I a=
ssume you are aware that the engine might fence the node it is running<br=
>> > > on ...<br>> > > Or do you use pacemaker to run t=
he engine as well =3F<br>> > > <br>> > > > My proble=
m is that I don't have any way to implement power management, so<br>> =
> > > the<br>> > > > Engine can't fence nodes and wo=
n't restart guests that were running on<br>> > > > the<br>>=
; > > > node which lost power. In pacemaker I can just configure=
fencing over SSH<br>> > > > or<br>> > > > even d=
isable the requirement to do so completely. Is there something<br>> &g=
t; > > similar<br>> > > > for oVirt, so that the Engine=
will consider a node which it can't connect<br>> > > > to<br=
>> > > > to be powered down=3F<br>> > > > <br>>=
; > > > Regards,<br>> > > > <br>> > > > =
mots<br>> > > > <br>> > > > _____________________=
__________________________<br>> > > > Users mailing list<br>&=
gt; > > > <a href=3D"mailto:Users@ovirt.org">Users(a)ovirt.org</a>=
<mailto:<a href=3D"mailto:Users@ovirt.org">Users(a)ovirt.org</a>><br=
>> > > > <a href=3D"http://lists.ovirt.org/mailman/listinfo/u=
sers" target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/users</a>=
<br>> > > > <<a href=3D"http://lists.ovirt.org/mailman/lis=
tinfo/users>" target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/u=
sers></a>;<br>> > > > <br>> > > <br>> > <br=
>> ><br>> </pre>=0A</body>=0A</html>
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9 years, 5 months
Re: [ovirt-users] Live Merge Functionality disabled on CentOS 6.6 Node and oVirt 3.5.0
by Markus Stockhausen
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9 years, 5 months
Live Merge Functionality disabled on CentOS 6.6 Node and oVirt 3.5.0
by s k
--_d7ba62e5-cc0a-4b02-9e57-68cd7267ac34_
Content-Type: text/plain; charset="iso-8859-7"
Content-Transfer-Encoding: quoted-printable
Hello=2C
I performed a full yum upgrade on a CentOS 6.5 Node which was upgraded to 6=
.6 and I currently the following RPM versions are installed:
[root@node01 ~]# uname -aLinux node01 2.6.32-504.1.3.el6.x86_64 #1 SMP Tue =
Nov 11 17:57:25 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux[root@node01 ~]# rpm=
-qa |grep libvirtlibvirt-python-0.10.2-46.el6_6.1.x86_64libvirt-client-0.1=
0.2-46.el6_6.1.x86_64libvirt-lock-sanlock-0.10.2-46.el6_6.1.x86_64libvirt-0=
.10.2-46.el6_6.1.x86_64[root@node01 ~]# [root@node01 ~]# rpm -qa |grep kvmq=
emu-kvm-rhev-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64qemu-kvm-rhev-tools-0.=
12.1.2-2.415.el6_5.14.x86_64qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64[ro=
ot@node01 ~]# rpm -qa |grep qemugpxe-roms-qemu-0.9.7-6.12.el6.noarchqemu-kv=
m-rhev-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64qemu-img-rhev-0.12.1.2-2.415=
.el6_5.14.x86_64qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14.x86_64qemu-kvm-=
rhev-0.12.1.2-2.415.el6_5.14.x86_64[root@node01 ~]# rpm -qa |grep vdsmvdsm-=
jsonrpc-4.16.7-1.gitdb83943.el6.noarchvdsm-python-zombiereaper-4.16.7-1.git=
db83943.el6.noarchvdsm-yajsonrpc-4.16.7-1.gitdb83943.el6.noarchvdsm-xmlrpc-=
4.16.7-1.gitdb83943.el6.noarchvdsm-4.16.7-1.gitdb83943.el6.x86_64vdsm-pytho=
n-4.16.7-1.gitdb83943.el6.noarchvdsm-cli-4.16.7-1.gitdb83943.el6.noarch
The host reports that Live Snapsnot Support is Active on the General Tab b=
ut I'm unable to delete a snapshot.
Any ideas?
Thank you=2C
Sokratis =
--_d7ba62e5-cc0a-4b02-9e57-68cd7267ac34_
Content-Type: text/html; charset="iso-8859-7"
Content-Transfer-Encoding: quoted-printable
<html>
<head>
<style><!--
.hmmessage P
{
margin:0px=3B
padding:0px
}
body.hmmessage
{
font-size: 12pt=3B
font-family:Calibri
}
--></style></head>
<body class=3D'hmmessage'><div dir=3D'ltr'>Hello=2C<div><br></div><div>I pe=
rformed a full yum upgrade on a CentOS 6.5 Node which was upgraded to 6.6 a=
nd I currently the following RPM versions are installed:</div><div><br></di=
v><div><div>[root@node01 ~]# uname -a</div><div>Linux node01 2.6.32-504.1.3=
.el6.x86_64 #1 SMP Tue Nov 11 17:57:25 UTC 2014 x86_64 x86_64 x86_64 GNU/Li=
nux</div><div>[root@node01 ~]# rpm -qa |grep libvirt</div><div>libvirt-pyth=
on-0.10.2-46.el6_6.1.x86_64</div><div>libvirt-client-0.10.2-46.el6_6.1.x86_=
64</div><div>libvirt-lock-sanlock-0.10.2-46.el6_6.1.x86_64</div><div>libvir=
t-0.10.2-46.el6_6.1.x86_64</div><div>[root@node01 ~]# =3B</div><div>[ro=
ot@node01 ~]# rpm -qa |grep kvm</div><div>qemu-kvm-rhev-debuginfo-0.12.1.2-=
2.415.el6_5.14.x86_64</div><div>qemu-kvm-rhev-tools-0.12.1.2-2.415.el6_5.14=
.x86_64</div><div>qemu-kvm-rhev-0.12.1.2-2.415.el6_5.14.x86_64</div><div>[r=
oot@node01 ~]# rpm -qa |grep qemu</div><div>gpxe-roms-qemu-0.9.7-6.12.el6.n=
oarch</div><div>qemu-kvm-rhev-debuginfo-0.12.1.2-2.415.el6_5.14.x86_64</div=
><div>qemu-img-rhev-0.12.1.2-2.415.el6_5.14.x86_64</div><div>qemu-kvm-rhev-=
tools-0.12.1.2-2.415.el6_5.14.x86_64</div><div>qemu-kvm-rhev-0.12.1.2-2.415=
.el6_5.14.x86_64</div><div>[root@node01 ~]# rpm -qa |grep vdsm</div><div>vd=
sm-jsonrpc-4.16.7-1.gitdb83943.el6.noarch</div><div>vdsm-python-zombiereape=
r-4.16.7-1.gitdb83943.el6.noarch</div><div>vdsm-yajsonrpc-4.16.7-1.gitdb839=
43.el6.noarch</div><div>vdsm-xmlrpc-4.16.7-1.gitdb83943.el6.noarch</div><di=
v>vdsm-4.16.7-1.gitdb83943.el6.x86_64</div><div>vdsm-python-4.16.7-1.gitdb8=
3943.el6.noarch</div><div>vdsm-cli-4.16.7-1.gitdb83943.el6.noarch</div></di=
v><div><br></div><div>The host reports that  =3BLive Snapsnot Support i=
s Active on the General Tab but I'm unable to delete a snapshot.</div><div>=
<br></div><div>Any ideas?</div><div><br></div><div>Thank you=2C</div><div><=
br></div><div>Sokratis</div> </div></body>
</html>=
--_d7ba62e5-cc0a-4b02-9e57-68cd7267ac34_--
9 years, 5 months
Re: [ovirt-users] oVirt 3.5 & NAT
by Phil Daws
How does one add multiple custom properties ? tried:
engine-config -s CustomDeviceProperties='{type=interface;prop={vlan=^[a-zA-Z0-9_ ---]+$}}{type=interface;prop={bridge=^[a-zA-Z0-9_ ---]+$}}'
but ended up with one call vlan and the other prop :) If can add vlan and bridge then should be able to use a vNIC profile for adding an interface directly to OVS using a custom hook.
Thanks, Phil
----- Original Message -----
From: "Phil Daws" <uxbod(a)splatnix.net>
To: users(a)ovirt.org
Sent: Monday, 27 October, 2014 3:04:20 PM
Subject: Re: [ovirt-users] oVirt 3.5 & NAT
Well, in fact have got something to work now! Left ovirtmgmt and em1 alone but ran:
$ ovs-vsctl add-br ovsbr0
$ ip link add name veth0 type veth peer name veth1
$ brctl addif ovirtmgmt veth0
$ ovs-vsctl add-port ovsbr veth1
$ ip add add XXX.XXX.XXX.XXX/29 dev veth1
$ ip link set veth0 up && ip link set veth1 up
and now veth1 is responding as-well as veth0.
ovs-vsctl show
08554d11-3ba7-4303-b9d5-6a09f23c9057
Bridge "ovsbr0"
Port "veth1"
Interface "veth1"
Port "ovsbr0"
Interface "ovsbr0"
type: internal
so what I think should do now is create a custom parameter on the Engine Manager that allows one to define an OVS bridge name and VLAN so when a virtual guest is created it can be assigned to the new bridge; with the use of a custom hook.
Thanks, Phil
----- Original Message -----
From: "Phil Daws" <uxbod(a)splatnix.net>
To: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
Cc: users(a)ovirt.org
Sent: Monday, 27 October, 2014 2:10:34 PM
Subject: Re: [ovirt-users] oVirt 3.5 & NAT
Darn, looks like this will not work :( the problem is that oVirt creates the bridge ovirtmgmt and binds that to your interface eg. em1. So at that point you have network running. If you then try to add that to the OVS stack your networking stop :( I tried to add it as a port using ovs-vsctl add-port ovsbr0 ovirtmgmt which is accepted but then networking stops. As soon as I remove again networking comes back to life. There does not seem to be a way to have two co-existing bridges :( Thanks, Phil
----- Original Message -----
From: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
To: "Phil Daws" <uxbod(a)splatnix.net>
Cc: "Dan Kenigsberg" <danken(a)redhat.com>, users(a)ovirt.org
Sent: Monday, 27 October, 2014 12:13:30 PM
Subject: Re: [ovirt-users] oVirt 3.5 & NAT
----- Original Message -----
> From: "Phil Daws" <uxbod(a)splatnix.net>
> To: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
> Cc: "Dan Kenigsberg" <danken(a)redhat.com>, users(a)ovirt.org
> Sent: Monday, October 27, 2014 11:41:56 AM
> Subject: Re: [ovirt-users] oVirt 3.5 & NAT
>
> Hi Antoni:
>
> Yes, prior to the reboot it did work okay. This is how it should look I
> believe:
>
> Bridge "ovirtmgmt"
> Port "mgmt0"
> Interface "mgmt0"
> type: internal
> Port "ovsbr0"
> Interface "ovsbr0"
> type: internal
>
> So the bridge would be defined by oVirt then I guess with a custom hook that
> would then be added to the OVS stack ?
exactly! You could just make a hook script that runs an after_network_setup
hook that does the ovs-vsctl for you ;-)
Here you can see the presentation I gave last February at devconf about extending
with configurators and hooks.
http://blog.antoni.me/devconf14/#/8/1
I linked directly to a before_network_setup hook sample, because it works just like
the after_network_setup hook. Instead of logging to systemd, just add that if
'remove' is not in data and network == 'ovirtmgmt', it adds the network bridge to
the vswitch with python's subprocess.call or subprocess.check_output.
You can send it if you want me to take a look ;-)
PS: It is possible to write the hooks in bash, c, perl, etc. But we only have the
convenience read_json methods and such for python. If you wanted to, you could have
a simple bash hook that just checked if there was an ovirtmgmt bridge and it would
add it doing ovs-vsctl in the before_vdsm_start hooking point. That would have the
drawback that changing the ovirtmgmt bridge with oVirt UI would leave it disconnected
again.
>
> Thanks, Phil
>
> ----- Original Message -----
> From: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
> To: "Phil Daws" <uxbod(a)splatnix.net>
> Cc: "Dan Kenigsberg" <danken(a)redhat.com>, users(a)ovirt.org
> Sent: Monday, 27 October, 2014 9:56:38 AM
> Subject: Re: [ovirt-users] oVirt 3.5 & NAT
>
>
>
> ----- Original Message -----
> > From: "Phil Daws" <uxbod(a)splatnix.net>
> > To: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
> > Cc: "Dan Kenigsberg" <danken(a)redhat.com>, users(a)ovirt.org
> > Sent: Monday, October 27, 2014 10:37:18 AM
> > Subject: Re: [ovirt-users] oVirt 3.5 & NAT
> >
> > That is what I tried but oVirt appears to overwrite the bridge information
> > on
> > boot :( Thanks, Phil
>
> But before rebooting, does it work as you intended? If so, you could just
> make
> a vdsm hook that adds ovirtmgmt to the ovs bridge after it is set up. (I
> could
> give more directions into how to do it).
>
> >
> > ----- Original Message -----
> > From: "Antoni Segura Puimedon" <asegurap(a)redhat.com>
> > To: "Phil Daws" <uxbod(a)splatnix.net>
> > Cc: "Dan Kenigsberg" <danken(a)redhat.com>, users(a)ovirt.org
> > Sent: Monday, 27 October, 2014 8:00:33 AM
> > Subject: Re: [ovirt-users] oVirt 3.5 & NAT
> >
> >
> >
> > ----- Original Message -----
> > > From: "Phil Daws" <uxbod(a)splatnix.net>
> > > To: "Dan Kenigsberg" <danken(a)redhat.com>
> > > Cc: users(a)ovirt.org
> > > Sent: Saturday, October 25, 2014 5:02:59 PM
> > > Subject: Re: [ovirt-users] oVirt 3.5 & NAT
> > >
> > > Hmmm, this is becoming difficult ..
> > >
> > > I have added into the engine the custom hook and understand how that will
> > > work. The issue is how can a single NIC use two different bridges ?
> > > Example with OVS would be that one requires:
> > >
> > > em1 -+ ovirtmgmt (bridge) -> management IP (public)
> > > + ovs (bridge) -> firewall IP (public)
> > > |
> > > + vlan 1
> > > + vlan 2
> > >
> > > this works fine when using OVS and KVM, without oVirt, so there must be a
> > > way
> > > to hook the two together without a Neutron appliance.
> > >
> > > Any thoughts ? Thanks, Phil.
> >
> > I haven't tried this, and it may not work, but what happens if you add the
> > ovirtmgmt
> > bridge as a port of the ovs bridge?
> > >
> > >
> > > ----- Original Message -----
> > > From: "Dan Kenigsberg" <danken(a)redhat.com>
> > > To: "Phil Daws" <uxbod(a)splatnix.net>
> > > Cc: users(a)ovirt.org
> > > Sent: Wednesday, 22 October, 2014 3:54:46 PM
> > > Subject: Re: [ovirt-users] oVirt 3.5 & NAT
> > >
> > > On Wed, Oct 22, 2014 at 03:12:09PM +0100, Phil Daws wrote:
> > > > Thanks Dan & Antoni:
> > > >
> > > > I wonder then if I could replace the standard libvirt defined network
> > > > with
> > > > an OpenVSwitch one like I have on my dev system? That is just straight
> > > > KVM with OVS integrated. Maybe a bit more overhead in administration
> > > > but
> > > > possibly less than having to spin up a Neutron Appliance.
> > >
> > > Once you start to use the vdsm-hook-extnet, all that you need to do is
> > > to replace the libvirt-side definition of the "external network". This
> > > may well be an OpenVSwitch-based network e.g.
> > > http://libvirt.org/formatnetwork.html#elementVlanTag
> > > _______________________________________________
> > > Users mailing list
> > > Users(a)ovirt.org
> > > http://lists.ovirt.org/mailman/listinfo/users
> > >
> >
>
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
9 years, 5 months
Cumulative VM network usage
by Lior Vernia
Hello,
The need to monitor cumulative VM network usage has come up several
times in the past; while this should be handled as part of
(https://bugzilla.redhat.com/show_bug.cgi?id=1063343), in the mean time
I've written a small Python script that monitors those statistics,
attached here.
The script polls the engine via RESTful API periodically and dumps the
up-to-date total usage into a file. The output is a multi-level
map/dictionary in JSON format, where:
* The top level keys are VM names.
* Under each VM, the next level keys are vNIC names.
* Under each vNIC, there are keys for total 'rx' (received) and 'tx'
(transmitted), where the values are in Bytes.
The script is built to run forever. It may be stopped at any time, but
while it's not running VM network usage data will "be lost". When it's
re-run, it'll go back to accumulating data on top of its previous data.
A few disclaimers:
* I haven't tested this with any edge cases (engine service dies, etc.).
* Tested this with tens of VMs, not sure it'll work fine with hundreds.
* The PERIOD_TIME (polling interval) should be set so that it matches
both the engine's and vdsm's polling interval (see comments inside the
script), otherwise data will be either lost or counted multiple times.
>From 3.4 onwards, default configuration should be fine with 15 seconds.
* The precision of traffic measurement on a NIC is 0.1% of the
interface's speed over each PERIOD_TIME interval. For example, on a
1Gbps vNIC, when PERIOD_TIME = 15s, data will only be measured in 15Mb
(~2MB) quanta. Specifically what this means is, that in this example,
any traffic smaller than 2MB over a 15-second period would be negligible
and wouldn't be recorded.
Knock yourselves out :)
9 years, 5 months
Power Management - but no LO?
by Daniel Helgenberger
Hello,
I am toying an idea involving using oVirt's PM capabilities (esp. the
cluster power_saving policy) in conjuration with some consumer grate
hosts for raw compute applications.
Now, these hosts do not have any lights out or BMC capabilities.
However, they could be started with WOL packets.
Is there a way how this can be done in oVirt? Shutting down hosts with
ssh and starting them with WOL?
Thanks!
--
Daniel Helgenberger
m box bewegtbild GmbH
P: +49/30/2408781-22
F: +49/30/2408781-10
ACKERSTR. 19
D-10115 BERLIN
www.m-box.de www.monkeymen.tv
Geschäftsführer: Martin Retschitzegger / Michaela Göllner
Handeslregister: Amtsgericht Charlottenburg / HRB 112767
9 years, 5 months
Gluster command[<UNKNOWN>] failed on server ovhost1
by Fumihide Tani
Please help!
I'm hosting an oVirt3.5 Engine server (CentOS6.5) and oVirt3.5 Host servers (CentOS 7.0).
Today, I have stopped all oVirt services (ovirt-engine and vdsmd) and updated oVirt3.5 Engine server and ovirt3.5 Host server by "yum update".
While update, some new Gluster components were installed.
After update, I tried to reboot ovirt3.5 Engine and Node servers, but oVirt is not working.
Portal's Events shows that:
- Status of host ovhost1 was set to NonOperational.
- Gluster command[<UNKNOWN>] failed on server ovhost1.
My oVirt servers and VMs are not operational now.
How to resolve?
Many thanks,
Fumihide Tani
9 years, 5 months
LDAP
by Koen Vanoppen
Hello everybody,
We updated our ovirt to 3.5, but now we see some errors concerning LDAP. I
already searched oonline for a guide for the AAA config, but can't seem to
find something...
Does anybody already has a clear how-to for the AAA config?
This is the error we get sometimes in our engine.log (we are still able to
login with ldap btw):
2014-11-20 06:42:06,539 ERROR
[org.ovirt.engine.extensions.aaa.builtin.kerberosldap.DirectorySearcher]
(ajp--127.0.0.1-8702-32) Failed ldap search server
ldap://***.brussels.airport:*** using user ****(a)BRUSSELS.AIRPORT due to :
[LDAP: error code 34 - 0000208F: LdapErr: DSID-0C09074B, comment: Error
processing name, data 0, v23f0]; nested exception is
javax.naming.InvalidNameException: : [LDAP: error code 34 - 0000208F:
LdapErr: DSID-0C09074B, comment: Error processing name, data 0, v23f0];
remaining name ''. We should try the next server
Kind regards,
Koen
9 years, 5 months
IPA-auth: user password expired
by Demeter Tibor
------=_Part_6727133_325728685.1416415592421
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Hi,
I have an IPA server 3.0 on centos 6.6.
I successfully attached to my ovirt cluster.
I can see the users on ovirt user tab, but after auth I always get this error:
Cannot Login. User Password has expired. Use the following URL to change the password: (nothing)
I have try out with different long passwords and different users, but it's same.
Is this version compatible with ovirt 3.5?
What did I wrong?
Thanks in advance,
Tibor
------=_Part_6727133_325728685.1416415592421
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: quoted-printable
<html><body><div style=3D"font-family: times new roman, new york, times, se=
rif; font-size: 12pt; color: #000000"><div>Hi,</div><div><br></div><div>I h=
ave an IPA server 3.0 on centos 6.6.</div><div>I successfully attached to m=
y ovirt cluster. </div><div>I can see the users on ovirt user tab, but=
after auth I always get this error:</div><div><span aria-hidden=3D"false" =
class=3D"label label-default GLGRQ1ODHEC temp-link-color"><br></span></div>=
<div><span aria-hidden=3D"false" class=3D"label label-default GLGRQ1ODHEC t=
emp-link-color">Cannot Login. User Password has expired. Use the following =
URL to change the password: (nothing)</span></div><div><span aria-hidden=3D=
"false" class=3D"label label-default GLGRQ1ODHEC temp-link-color"><br></spa=
n></div><div><span aria-hidden=3D"false" class=3D"label label-default GLGRQ=
1ODHEC temp-link-color">I have try out with different long passwords and di=
fferent users, but it's same.</span></div><div><span aria-hidden=3D"false" =
class=3D"label label-default GLGRQ1ODHEC temp-link-color"><br>Is this versi=
on compatible with ovirt 3.5?</span></div><div><br></div><div>What did I wr=
ong?</div><div><br></div><div>Thanks in advance,</div><div>Tibor</div></div=
></body></html>
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9 years, 5 months
Re: [ovirt-users] separate ovirtmgmt from glusterfs traffic
by Juan Pablo Lorier
Hi,
In my experience, having ovirt traffic on the same nic that gluster can
make your platafrom unstable. I was using it for large file storage and
gluster has so big traffic that ovirt got confused and started marking
hosts as unavailable because of hi latency.
I've opened an RFE over a year ago, but had no luck with the team to get
it done. In the RFE I was asking to have a way in the UI to decide which
nic to use for gluster other than the MGMT net that is the one ovirt
lets you use.
There's another way to do this and it's from outside ovirt. There you
have to unregister and re register the bricks using gluster console
commands. This way, when you register the bricks, you can specify the IP
address of the spare NIC and then the traffic will not interfere with
the mgmt.
There's a step that I don't recall much, but ovirt is going to need to
know that the bricks are no longer is the mgmt IP, maybe someone else in
the list can help with this. I can tell you that if you search the list
you'll see my posts about this and the replys of those who helped my
back then.
Regards,
9 years, 5 months
