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@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@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@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@ovirt.org <mailto:Users%40ovirt.org> http://lists.ovirt.org/mailman/listinfo/users
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<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"
------------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 <emayoral@arsys.es> 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@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/listinfo/users</a= 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://lists.ovirt= .org/mailman/listinfo/users</a> </pre> </blockquote> <br> </blockquote> </div> </div> </body> </html> ------------15f80f30a1b78e9276832d9c5a--