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<div class="moz-cite-prefix">On 09/22/2012 02:28 PM, Nicolas Chenier
wrote:<br>
</div>
<blockquote
cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com"
type="cite">Question - if oVirt goes down... do the ovirt-nodes
and VMs remain up?<br>
<br>
<br>
Keith, how would you set yourself up with these specs:<br>
<br>
2 host servers (quad-core xeons with 32gigs of ram)<br>
</blockquote>
Are you saying that you only have 2 machines in total, or that you
have 2 machines that can be dedicated hypervisors (ie. ovirt-node)
and a third machine that can be a dedicated manager?<br>
<br>
If the former then one machine must run some version of *nix
compatible with oVirt Manager and, the other machine in this
scenario can simply run ovirt-node. <br>
<br>
If the latter, then you have 1 box dedicated as a manager and 2
boxes as dedicated hypervisors. This is a fairly basic/good setup.
<br>
<blockquote
cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com"
type="cite">1 iSCSI NAS<br>
<br>
Starting to think there is no way to achieve HA with this setup? </blockquote>
Not with only 2 boxes. No.<br>
<blockquote
cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com"
type="cite">oVirt requires a dedicated machine?<br>
</blockquote>
Generally, speaking. Yes.<br>
<br>
Truly HA setups aren't cheap and people often have different ideas
of what constitutes HA. Offhand I would think that you would
need...<br>
<br>
- 2 boxes for the oVirt manager<br>
- Clustering software for the manager to facilitate an
active/passive setup.<br>
- UPSs (at *least* 2) which can be controlled by clustering
software. Why? Most clustering SW require a fence device. These
will be your fence devices.<br>
- 2 boxes for your hypervisors (ie. ovirt-nodes). This will
facilitate fail-over from one node to the other.<br>
<br>
HA isn't cheap and can't usually be done on 2 boxes, IMO unless
you're failing over a single app.<br>
<br>
<br>
<blockquote
cite="mid:CAJZXTno2Qqzknhr+UqHmG6r7o1JCTn-M-en01yWC=M5Gz5x=mg@mail.gmail.com"
type="cite">
<br>
Thank you!<br>
<br>
Nic<br>
<br>
PS. Could oVirt be integrated into ovirt-node on every server?<br>
<br>
<br>
<br>
<div class="gmail_quote">On Sat, Sep 22, 2012 at 2:16 PM, Keith
Robertson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:kroberts@redhat.com" target="_blank">kroberts@redhat.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div class="im">
<div>On 09/22/2012 01:09 PM, Nicolas Chenier wrote:<br>
</div>
<blockquote type="cite">Hi Alan,<br>
<br>
I have oVirt running in a VM off my Desktop (Fedora 17
w/ KVM & Virt-Manager) off my iSCSI NAS. <br>
<br>
I've attached Server #1 as my first host (it's running
ovirt-node).<br>
<br>
In the process of setting up my storage domains. I have
a few questions to the experts out there:<br>
<br>
1) How do I add my CD .ISOs to setup new VMs? Create
iSCSI storage domain? But then how do I copy my ISOs to
it?<br>
</blockquote>
</div>
Create an ISO storage domain and use the ovirt-iso-uploader
to add your ISOs and .vfd files into that domain.
<div class="im"><br>
<blockquote type="cite"><br>
2) Can I run my oVirt VM from ovirt-node machine,
without running it in oVirt (ie. setup iSCSI in
virt-manager (as it is now) and run oVirt from
virt-manager... then I can manage my hosts through that
ovirt VM?<br>
</blockquote>
</div>
Huh? You could run the oVirt Manager from a VM managed by
virt-manager... yes. Running the oVirt manager inside a VM
on a hypervisor (ie. ovirt-node) controlled by that same
manager isn't supported AFAIK because the mgr. could get
fenced. <br>
<br>
To summarize, you can pretty much run the oVirt manager on
any supported OS as long as that OS instance isn't running
on a hypervisor (ie. ovirt-node) controlled by *that*
manager.<br>
<br>
If you haven't noticed the vocabulary to describe the
various components can get a little confusing. ;) <br>
<br>
<br>
<blockquote type="cite">
<div class="im"> <br>
Not sure if I'm making myself clear... but I'm making
progress. I think as long as you are not managing your
oVirt vm through oVirt itself, the solution should work
fine! Just trying to see if I can get that done on an
ovirt-node machine...<br>
<br>
Thank you,<br>
<br>
Nic<br>
<br>
<br>
<div class="gmail_quote">On Fri, Sep 21, 2012 at 3:31
PM, Alan Johnson <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:alan@datdec.com" target="_blank">alan@datdec.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote">
<div>On Wed, Sep 12, 2012 at 9:22 PM, Nicolas
Chenier <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:dascope@gmail.com"
target="_blank">dascope@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0
0 0 .8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div>I was under the impression that
my oVirt VM would show up in oVirt and that
I could manage it through there...</div>
<div> </div>
<div>What you're saying is that I should just
run it seperatly and not manage it with
itself (oVirt)? keep it on my shared storage
so that I can run it off any of the 2
servers? But not manage it with oVirt
(itself). I think I'm starting to get it
now...</div>
<div> </div>
<div>I really appreciate your help!</div>
<div> </div>
<div>Nic</div>
</blockquote>
<div><br>
</div>
</div>
<div>Nic, how did you make out with this? I'm
looking to do the same thing and am wondering if
there is any risk in running the engine on a VM
managed by the same engine, as you were
suggesting before. Did you give this a shot?</div>
<div><br>
</div>
<div>Itamar, why did you steer Nic away from this?</div>
<font color="#663366"><font
face="verdana,sans-serif"><br clear="all">
</font></font>_______________<span><font
color="#888888"><br>
Alan Johnson<br>
<a moz-do-not-send="true"
href="mailto:alan@datdec.com"
target="_blank">alan@datdec.com</a><br>
<div> </div>
</font></span></div>
</blockquote>
</div>
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<div class="im">
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