11:15 a.m.
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Exporting the VMs to an export storage domain on the first server,
copying the files to another export storage domain on the second server
and importing it should work. What kind of problem did you find?
As for the order of doing things, my first oVirt lab was a 3-node setup
with gluster (oVirt version 4.0). I found this guide helpful:
https://www.ovirt.org/blog/2016/08/up-and-running-with-ovirt-4-0-and-glus...
I see there is a new version of it:
https://www.ovirt.org/blog/2017/04/up-and-running-with-ovirt-4.1-and-glus...
If I understand correctly you plan to re-use the server you already
have. I think you will probably find it much easier have to export your
VMs, re-deploy and import your VMs back. It means some downtime, but you
seem very constrained on the hardware available and there is not much
room to manouver...
Good luck!
Eduardo Mayoral Jimeno (emayoral(a)arsys.es)
Administrador de sistemas. Departamento de Plataformas. Arsys internet.
+34 941 620 145 ext. 5153
On 03/11/17 08:39, Artem Tambovskiy wrote:
Thanks Eduardo!
I think I can find a third server to build a glusterFS storage. So the
first step will be to install a self-hosted engine on the new server
and start building a glusterFS storage. IS there any easy way to
migrate existing 5 VM's running on the second bare-metal oVirt host,
right? I found a little bit tricky moving oVirt backups between the
hosts (at least I failed to replicate the existing VM's on the second
server).
Regards,
Artem
On Fri, Nov 3, 2017 at 10:24 AM, Eduardo Mayoral <emayoral(a)arsys.es
<mailto:emayoral@arsys.es>> wrote:
For HA you will need some kind of storage available to all the
compute nodes in the cluster. If you have no external storage and
few nodes, I think your best option for storage is gluster , and
the minimum number of nodes you will need for HA is 3 (the third
gluster node can be metadata-only, but you still need that third
node to give you quorum, avoid split-brains and have something
that you can call "HA" with a straight face.
Eduardo Mayoral Jimeno (emayoral(a)arsys.es <mailto:emayoral@arsys.es>)
Administrador de sistemas. Departamento de Plataformas. Arsys internet.
+34 941 620 145 ext. 5153 <tel:+34%20941%2062%2001%2045>
On 03/11/17 08:10, Artem Tambovskiy wrote:
> Looking for a design advise on oVirt provisioning. I'm running a
> PoC lab on single bare-metal host (suddenly it was setup with
> just Local Storage domain) and
> no I'd like to rebuild the setup by making a cluster of 2
> physical servers, no external storage array available. That are
> the options here? is there any options to build cheap HA cluster
> with just 2 servers?
>
> Thanks in advance!
>
> Artem
>
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org <mailto:Users@ovirt.org>
> http://lists.ovirt.org/mailman/listinfo/users
> <http://lists.ovirt.org/mailman/listinfo/users>
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<p>Exporting the VMs to an export storage domain on the first
server, copying the files to another export storage domain on the
second server and importing it should work. What kind of problem
did you find?</p>
<p>As for the order of doing things, my first oVirt lab was a 3-node
setup with gluster (oVirt version 4.0). I found this guide
helpful:</p>
<p><a class="moz-txt-link-freetext"
href="https://www.ovirt.org/blog/2016/08/up-and-running-with-ovirt-4...
<p>I see there is a new version of it:</p>
<p><a class="moz-txt-link-freetext"
href="https://www.ovirt.org/blog/2017/04/up-and-running-with-ovirt-4...
<p>If I understand correctly you plan to re-use the server you
already have. I think you will probably find it much easier have
to export your VMs, re-deploy and import your VMs back. It means
some downtime, but you seem very constrained on the hardware
available and there is not much room to manouver...<br>
</p>
<p>Good luck!<br>
</p>
<pre class="moz-signature" cols="72">Eduardo Mayoral Jimeno
(<a class="moz-txt-link-abbreviated"
href="mailto:emayoral@arsys.es">emayoral@arsys.es</a>)
Administrador de sistemas. Departamento de Plataformas. Arsys internet.
+34 941 620 145 ext. 5153</pre>
<div class="moz-cite-prefix">On 03/11/17 08:39, Artem Tambovskiy
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAAq+RfYZT9nYvPh3NttwrRu1JRb+1qhzihGi+WETrO8+vFcEng@mail.gmail.com">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<div dir="ltr">Thanks Eduardo!<br>
<br>
I think I can find a third server to build a glusterFS storage.
So the first step will be to install a self-hosted engine on the
new server and start building a glusterFS storage. IS there any
easy way to migrate existing 5 VM's running on the second
bare-metal oVirt host, right? I found a little bit tricky moving
oVirt backups between the hosts (at least I failed to replicate
the existing VM's on the second server).
<div><br>
</div>
<div>Regards,</div>
<div>Artem<br>
<br>
<br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Nov 3, 2017 at 10:24 AM,
Eduardo Mayoral <span dir="ltr"><<a
href="mailto:emayoral@arsys.es" target="_blank"
moz-do-not-send="true">emayoral(a)arsys.es</a>&gt;</span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<p>For HA you will need some kind of storage available to
all the compute nodes in the cluster. If you have no
external storage and few nodes, I think your best option
for storage is gluster , and the minimum number of nodes
you will need for HA is 3 (the third gluster node can be
metadata-only, but you still need that third node to
give you quorum, avoid split-brains and have something
that you can call "HA" with a straight face.<br>
</p>
<pre class="m_-1929299242340323219moz-signature"
cols="72">Eduardo Mayoral Jimeno (<a
class="m_-1929299242340323219moz-txt-link-abbreviated"
href="mailto:emayoral@arsys.es" target="_blank"
moz-do-not-send="true">emayoral(a)arsys.es</a>)
Administrador de sistemas. Departamento de Plataformas. Arsys internet.
<a href="tel:+34%20941%2062%2001%2045" value="+34941620145"
target="_blank" moz-do-not-send="true">+34 941 620 145 ext.
5153</a></pre>
<div>
<div class="h5">
<div class="m_-1929299242340323219moz-cite-prefix">On
03/11/17 08:10, Artem Tambovskiy wrote:<br>
</div>
</div>
</div>
<blockquote type="cite">
<div>
<div class="h5">
<div dir="ltr">
<div>Looking for a design advise on oVirt
provisioning. I'm running a PoC lab on single
bare-metal host (suddenly it was setup with just
Local Storage domain) and </div>
<div>no I'd like to rebuild the setup by making a
cluster of 2 physical servers, no external
storage array available. That are the options
here? is there any options to build cheap HA
cluster with just 2 servers? </div>
<div><br>
</div>
<div>Thanks in advance!</div>
<div><br>
</div>
<div>Artem</div>
</div>
<br>
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class="m_-1929299242340323219mimeAttachmentHeader"></fieldset>
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<pre>______________________________<wbr>_________________
Users mailing list
<a class="m_-1929299242340323219moz-txt-link-abbreviated"
href="mailto:Users@ovirt.org" target="_blank"
moz-do-not-send="true">Users(a)ovirt.org</a>
<a class="m_-1929299242340323219moz-txt-link-freetext"
href="http://lists.ovirt.org/mailman/listinfo/users" target="_blank"
moz-do-not-send="true">http://lists.ovirt.org/<wbr>mai...
</pre>
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