Upgrade datacenter from 3.6 to 4.0
Hi, What is the best way to upgrade a datacenter from ovirt 3.6 to 4.0 ? Upgrade engine, hosts then cluster ? If right, how do you upgrade a host running ovirt 3.6.7 ? Simple upgrade or fresh install ? During the update process of a cluster, some hosts will be in 3.6.7 and others in 4.0.2, is it a problem for migrating VMs ? Found docs about engine upgrade but not a lot about host and cluster. Thanks, Arnaud
The following process worked for me: 1. ensure all hosts are running el7 or above, and all clusters had been upgraded to 3.6 level 2. upgrade vdsm to 4.x on all hosts (assuming you are not using ovirt-node) by switching to maintainance upgrading and activating one by one to avoid VM downtime. 3. Upgrade engine by following one of the documented procedures (we just inatalled a new machine for it and switched DNS after backup/restore). 4. Once satisfied that illing back to 3.6 engine will not be needed - upgrade cluster level. בתאריך 23 באוג׳ 2016 12:43, "Arnaud Lauriou" <arnaud.lauriou@irisa.fr> כתב:
Hi,
What is the best way to upgrade a datacenter from ovirt 3.6 to 4.0 ? Upgrade engine, hosts then cluster ? If right, how do you upgrade a host running ovirt 3.6.7 ? Simple upgrade or fresh install ? During the update process of a cluster, some hosts will be in 3.6.7 and others in 4.0.2, is it a problem for migrating VMs ?
Found docs about engine upgrade but not a lot about host and cluster.
Thanks,
Arnaud _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
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On 23 August 2016 at 19:09, Christophe TREFOIS <christophe.trefois@uni.lu> wrote:
Small add.
Shouldnt one update the engine first ?
Nope. You should always update the hosts first. The other way around can work but AFAIK this is what is being tested. -- *Barak Korren* bkorren@redhat.com RHEV-CI Team
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On 24 August 2016 at 12:32, Christophe TREFOIS <christophe.trefois@uni.lu> wrote:
Really? That’s strange, as the engine should be backward compatible with previous versions no?
Think about it like this - When an update comes out it gets pushed to the repos/channels. If you then go and provision a new host with some automated system like Foreman, you end up with the new VDSM. Also, since you can have a large amount of hosts, you may reasonably choose to use some automated system to keep them up to date. It is more reasonable to expect the engine machine to have a steadier/slower life cycle. -- *Barak Korren* bkorren@redhat.com RHEV-CI Team
Doesn't it make more sense for this major upgrade to be a simple new install of engine v4, and importing the existing SDs? On Wed, Aug 24, 2016 at 6:34 AM, Barak Korren <bkorren@redhat.com> wrote:
On 24 August 2016 at 12:32, Christophe TREFOIS <christophe.trefois@uni.lu> wrote:
Really? That’s strange, as the engine should be backward compatible with previous versions no?
Think about it like this - When an update comes out it gets pushed to the repos/channels. If you then go and provision a new host with some automated system like Foreman, you end up with the new VDSM. Also, since you can have a large amount of hosts, you may reasonably choose to use some automated system to keep them up to date. It is more reasonable to expect the engine machine to have a steadier/slower life cycle.
-- *Barak Korren* bkorren@redhat.com RHEV-CI Team
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_F6D6D1D2-BA36-4709-84B2-A7B69B3B80BB Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii
On 24 Aug 2016, at 05:09, Barak Korren <bkorren@redhat.com> wrote: =20 =20 =20 On 23 August 2016 at 19:09, Christophe TREFOIS = <christophe.trefois@uni.lu <mailto:christophe.trefois@uni.lu>> wrote: Small add.=20 =20 Shouldnt one update the engine first ? =20 Nope.=20 You should always update the hosts first. The other way around can = work but AFAIK this is what is being tested.
not really. we do not define the order, and AFAIR last time we tried to check it was = about 50/50;-) It is fully compatible both ways
=20 =20 --=20 Barak Korren bkorren@redhat.com <mailto:bkorren@redhat.com> RHEV-CI Team _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
--Apple-Mail=_F6D6D1D2-BA36-4709-84B2-A7B69B3B80BB Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=us-ascii <html><head><meta http-equiv=3D"Content-Type" content=3D"text/html = charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; = -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" = class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div = class=3D"">On 24 Aug 2016, at 05:09, Barak Korren <<a = href=3D"mailto:bkorren@redhat.com" class=3D"">bkorren@redhat.com</a>> = wrote:</div><br class=3D"Apple-interchange-newline"><div class=3D""><div = dir=3D"ltr" class=3D""><br class=3D""><div class=3D"gmail_extra"><br = class=3D""><div class=3D"gmail_quote">On 23 August 2016 at 19:09, = Christophe TREFOIS <span dir=3D"ltr" class=3D""><<a = href=3D"mailto:christophe.trefois@uni.lu" target=3D"_blank" = class=3D"">christophe.trefois@uni.lu</a>></span> wrote:<br = class=3D""><blockquote class=3D"gmail_quote" style=3D"margin:0 = .8ex;border-left:1px #ccc solid;border-right:1px #ccc = solid;padding-left:1ex;padding-right:1ex"> <div style=3D"word-wrap:break-word" class=3D""> Small add. <div class=3D""><br class=3D""> </div> <div class=3D"">Shouldnt one update the engine first ?<br class=3D""> <div class=3D""> <div style=3D"letter-spacing: normal; text-align: start; text-indent: = 0px; text-transform: none; white-space: normal; word-spacing: 0px; = word-wrap: break-word;" class=3D""> <div style=3D"letter-spacing: normal; text-align: start; text-indent: = 0px; text-transform: none; white-space: normal; word-spacing: 0px; = word-wrap: break-word;" class=3D""> <div style=3D"letter-spacing: normal; text-align: start; text-indent: = 0px; text-transform: none; white-space: normal; word-spacing: 0px; = word-wrap: break-word;" = class=3D""></div></div></div></div></div></div></blockquote><div = class=3D""><br class=3D""></div><div class=3D"">Nope. <br = class=3D""></div><div class=3D"">You should always update the hosts = first. The other way around can work but AFAIK this is what is being = tested.<br class=3D""></div></div></div></div></div></blockquote><div><br = class=3D""></div>not really.</div><div>we do not define the order, and = AFAIR last time we tried to check it was about 50/50;-)</div><div>It is = fully compatible both ways</div><div><br class=3D""><blockquote = type=3D"cite" class=3D""><div class=3D""><div dir=3D"ltr" class=3D""><div = class=3D"gmail_extra"><br clear=3D"all" class=3D""><br class=3D"">-- <br = class=3D""><div class=3D"gmail_signature" = data-smartmail=3D"gmail_signature"><div dir=3D"ltr" class=3D""><div = class=3D""><b class=3D"">Barak Korren</b><br class=3D""></div><div = class=3D""><a href=3D"mailto:bkorren@redhat.com" target=3D"_blank" = class=3D"">bkorren@redhat.com</a><br class=3D""></div>RHEV-CI Team<br = class=3D""></div></div> </div></div> _______________________________________________<br class=3D"">Users = mailing list<br class=3D""><a href=3D"mailto:Users@ovirt.org" = class=3D"">Users@ovirt.org</a><br = class=3D"">http://lists.ovirt.org/mailman/listinfo/users<br = class=3D""></div></blockquote></div><br class=3D""></body></html>= --Apple-Mail=_F6D6D1D2-BA36-4709-84B2-A7B69B3B80BB--
This is a multi-part message in MIME format. --------------040004070607060408020603 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Upgrade done. In my case, the engine was already updated to the latest 4.x release before the hosts. Following marks 1 and 2 works fine. After upgrading the cluster compatibility version, got message to reboot all the VMs. Don't know if I really have to do that. On 08/23/2016 02:28 PM, Barak Korren wrote:
The following process worked for me: 1. ensure all hosts are running el7 or above, and all clusters had been upgraded to 3.6 level 2. upgrade vdsm to 4.x on all hosts (assuming you are not using ovirt-node) by switching to maintainance upgrading and activating one by one to avoid VM downtime. 3. Upgrade engine by following one of the documented procedures (we just inatalled a new machine for it and switched DNS after backup/restore). 4. Once satisfied that illing back to 3.6 engine will not be needed - upgrade cluster level.
בתאריך 23 באוג׳ 2016 12:43, "Arnaud Lauriou" <arnaud.lauriou@irisa.fr <mailto:arnaud.lauriou@irisa.fr>> כתב:
Hi,
What is the best way to upgrade a datacenter from ovirt 3.6 to 4.0 ? Upgrade engine, hosts then cluster ? If right, how do you upgrade a host running ovirt 3.6.7 ? Simple upgrade or fresh install ? During the update process of a cluster, some hosts will be in 3.6.7 and others in 4.0.2, is it a problem for migrating VMs ?
Found docs about engine upgrade but not a lot about host and cluster.
Thanks,
Arnaud _______________________________________________ Users mailing list Users@ovirt.org <mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users <http://lists.ovirt.org/mailman/listinfo/users>
--------------040004070607060408020603 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">Upgrade done. In my case, the engine was already updated to the latest 4.x release before the hosts.<br> Following marks 1 and 2 works fine.<br> After upgrading the cluster compatibility version, got message to reboot all the VMs.<br> Don't know if I really have to do that.<br> <br> <br> On 08/23/2016 02:28 PM, Barak Korren wrote:<br> </div> <blockquote cite="mid:CAGJrMmoVZmRdxZGFOcBn=F5jetuEF8dAY7Z+=CGB3jW4iyfjcw@mail.gmail.com" type="cite"> <p dir="ltr">The following process worked for me:<br> 1. ensure all hosts are running el7 or above, and all clusters had been upgraded to 3.6 level <br> 2. upgrade vdsm to 4.x on all hosts (assuming you are not using ovirt-node) by switching to maintainance upgrading and activating one by one to avoid VM downtime.<br> 3. Upgrade engine by following one of the documented procedures (we just inatalled a new machine for it and switched DNS after backup/restore).<br> 4. Once satisfied that illing back to 3.6 engine will not be needed - upgrade cluster level.</p> <div class="gmail_extra"><br> <div class="gmail_quote">בתאריך 23 באוג׳ 2016 12:43, "Arnaud Lauriou" <<a moz-do-not-send="true" href="mailto:arnaud.lauriou@irisa.fr">arnaud.lauriou@irisa.fr</a>> כתב:<br type="attribution"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br> <br> What is the best way to upgrade a datacenter from ovirt 3.6 to 4.0 ?<br> Upgrade engine, hosts then cluster ?<br> If right, how do you upgrade a host running ovirt 3.6.7 ? Simple upgrade or fresh install ?<br> During the update process of a cluster, some hosts will be in 3.6.7 and others in 4.0.2, is it a problem for migrating VMs ?<br> <br> Found docs about engine upgrade but not a lot about host and cluster.<br> <br> Thanks,<br> <br> Arnaud<br> ______________________________<wbr>_________________<br> Users mailing list<br> <a moz-do-not-send="true" href="mailto:Users@ovirt.org" target="_blank">Users@ovirt.org</a><br> <a moz-do-not-send="true" href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.ovirt.org/mailman<wbr>/listinfo/users</a><br> </blockquote> </div> </div> </blockquote> <br> </body> </html> --------------040004070607060408020603--
participants (5)
-
Arnaud Lauriou -
Barak Korren -
Christophe TREFOIS -
Dan Yasny -
Michal Skrivanek