11:15 a.m.
This is a multi-part message in MIME format.
------------15f80f30a1b78e9276832d9c5a
Content-Type: text/plain; format=flowed; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
On drbd you have one master and use iscsi to share the storage. If the=20
master fails it will fail over to the other.
You have one up that will act as the iscsi storage and jump between the h=
osts.
If you run drbd master master ... Then you might get split brain and that=
=20
is not fun :)
On November 3, 2017 09:04:49 Eduardo Mayoral <emayoral(a)arsys.es> wrote:
Just genuinely curious, how do you avoid split-brain situations with
a
2-node setup (be it drbd, gluster or anything else)?
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 08:40, Johan Bernhardsson wrote:
>
> 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.
>
> I even think they have a white paper on how to do it for virtualizatio=
n.
>
> /Johan
>
> On November 3, 2017 08:11:04 Artem Tambovskiy
> <artem.tambovskiy(a)gmail.com> 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=C2=A0
>> 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?=C2=A0
>>
>> Thanks in advance!
>>
>> Artem
>> _______________________________________________
>> Users mailing list
>> Users(a)ovirt.org <mailto:Users%40ovirt.org>
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
------------15f80f30a1b78e9276832d9c5a
Content-Type: text/html; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<html>
<head>
=20
</head>
<body>
<div style=3D"color: black;">
<div style=3D"color: black;">
<p style=3D"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=3D"margin: 0 0 1em 0; color: black;">You have one up that will
a=
ct
as the iscsi storage and jump between the hosts.</p>
<p style=3D"margin: 0 0 1em 0; color: black;">If you run drbd master
mast=
er
... Then you might get split brain and that is not fun :)</p>
</div>
<div style=3D"color: black;">
<p
style=3D"color: black; font-size: 10pt; font-family: Arial, sans-serif; m=
argin: 10pt 0;">On
November 3, 2017 09:04:49 Eduardo Mayoral &lt;emayoral(a)arsys.es&gt; wrote=
:</p>
<blockquote type=3D"cite" class=3D"gmail_quote"
style=3D"margin: 0 0 0 0.75ex; border-left: 1px solid #808080; padding-le=
ft: 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=3D"moz-signature" cols=3D"72">Eduardo Mayoral
Jimeno (<a
class=3D"moz-txt-link-abbreviated"
href=3D"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=3D"moz-cite-prefix">On 03/11/17 08:40, Johan Bernhardsson
wrote:<br>
</div>
<blockquote type=3D"cite"
cite=3D"mid:15f80d35370.2768.ffe2d6cdf294efc1bb86526523af9945@kafit=
.se">
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3Du=
tf-8">
<div style=3D"color: black;">
<div style=3D"color: black;">
<p style=3D"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=3D"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=3D"margin: 0 0 1em 0; color: black;">/Johan</p>
</div>
<div style=3D"color: black;">
<p style=3D"color: black; font-size: 10pt; font-family: Arial,
sans-serif; margin: 10pt 0;">On
November 3, 2017 08:11:04 Artem Tambovskiy
<a class=3D"moz-txt-link-rfc2396E"
href=3D"mailto:artem.tambovskiy@gmail.com"><artem.tambovskiy@gmail.com=
></a>
wrote:</p>
<blockquote type=3D"cite" class=3D"gmail_quote"
style=3D"margin=
: 0 0
0 0.75ex; border-left: 1px solid #808080; padding-left:
0.75ex;">
<div dir=3D"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=C2=A0</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?=C2=A0</div>
<div<br>
</div>
<div>Thanks in
advance!</div>
<div<br>
</div>
<div>Artem</div>
</div>
_______________________________________________<br>
Users mailing list<br>
<a class=3D"aqm-autolink aqm-autowrap"
href=3D"mailto:Users%40ovirt.org"
moz-do-not-send=3D"true">Users(a)ovirt.org</a<br>
<a class=3D"aqm-autolink aqm-autowrap"
href=3D"http://lists.ovirt.org/mailman/listinfo/users"
=20
moz-do-not-send=3D"true">http://lists.ovirt.org/mailman/list...
<br>
<br>
</blockquote>
</div>
</div>
<br>
<fieldset class=3D"mimeAttachmentHeader"></fieldset>
<br>
<pre wrap=3D"">_______________________________________________
Users mailing list
<a class=3D"moz-txt-link-abbreviated"
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a>
<a class=3D"moz-txt-link-freetext"
href=3D"http://lists.ovirt.org/mailman/listinfo/users">http:...
.org/mailman/listinfo/users</a>
</pre>
</blockquote>
<br>
</blockquote>
</div>
</div>
</body>
</html>
------------15f80f30a1b78e9276832d9c5a--