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<p>Nevertheless you could end up with a split brain situation
because you've no quorum.</p>
<p>So it doesn't matter which kind of cluster you want to build, but
you'll need a third node as a tiebreaker.</p>
<p>I know that a 2 node cluster with drbd would work, but not in all
cases, so do yourself a favor and get a third node. <br>
</p>
<br>
<div class="moz-cite-prefix">On 03.11.2017 09:15, Johan Bernhardsson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:15f80f308a0.2768.ffe2d6cdf294efc1bb86526523af9945@kafit.se">
<div style="color: black;">
<div style="color: black;">
<p style="margin: 0 0 1em 0; color: black;">On drbd you have
one master and
use iscsi to share the storage. If the master fails it will
fail over to
the other.</p>
<p style="margin: 0 0 1em 0; color: black;">You have one up
that will act
as the iscsi storage and jump between the hosts.</p>
<p style="margin: 0 0 1em 0; color: black;">If you run drbd
master master
... Then you might get split brain and that is not fun :)</p>
</div>
<div style="color: black;">
<p style="color: black; font-size: 10pt; font-family: Arial,
sans-serif; margin: 10pt 0;">On
November 3, 2017 09:04:49 Eduardo Mayoral
<a class="moz-txt-link-rfc2396E" href="mailto:emayoral@arsys.es"><emayoral@arsys.es></a> wrote:</p>
<blockquote type="cite" class="gmail_quote" style="margin: 0 0
0 0.75ex; border-left: 1px solid #808080; padding-left:
0.75ex;">
<p>Just genuinely curious, how do you avoid split-brain
situations with a 2-node setup (be it drbd, gluster or
anything else)?<br>
</p>
<pre class="moz-signature" cols="72">Eduardo Mayoral Jimeno (<a class="moz-txt-link-abbreviated" href="mailto:emayoral@arsys.es" moz-do-not-send="true">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 08:40, Johan
Bernhardsson wrote:<br>
</div>
<blockquote type="cite"
cite="mid:15f80d35370.2768.ffe2d6cdf294efc1bb86526523af9945@kafit.se">
<meta http-equiv="Content-Type" content="text/html;
charset=utf-8">
<div style="color: black;">
<div style="color: black;">
<p style="margin: 0 0 1em 0; color: black;">Check on
drbd. I have used that to build a cluster for two
servers. It need some more work than a three node
gluster conf but works well.</p>
<p style="margin: 0 0 1em 0; color: black;">I even
think they have a white paper on how to do it for
virtualization.</p>
<p style="margin: 0 0 1em 0; color: black;">/Johan</p>
</div>
<div style="color: black;">
<p style="color: black; font-size: 10pt; font-family:
Arial, sans-serif; margin: 10pt 0;">On November 3,
2017 08:11:04 Artem Tambovskiy <a
class="moz-txt-link-rfc2396E"
href="mailto:artem.tambovskiy@gmail.com"
moz-do-not-send="true"><artem.tambovskiy@gmail.com></a>
wrote:</p>
<blockquote type="cite" class="gmail_quote"
style="margin: 0 0 0 0.75ex; border-left: 1px solid
#808080; padding-left: 0.75ex;">
<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>
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<pre class="moz-signature" cols="72">--
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)</pre>
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