Rolling pool update
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Are you running a pool with only 1 host inside? If so, then I believe Rolling Pool Update (RPU) isn't available.
The point of it is to have a automated way to let XO migrate VMs in the pool to the other hosts. And when the intended host (master first) is empty, it will place it in maintenance mode, and afterwards reboot it. This will then re-iterate until all hosts in the pool have been updated.
More can be found here:
https://docs.xcp-ng.org/management/updates/#from-xen-orchestra -
@jr-m4 Yes, it's a very basic home server.
So what does that update actually update? Is there a changelog or something? I don't understand the point of it. -
Follow this post - https://xcp-ng.org/forum/topic/9964/xcp-ng-8-3-updates-announcements-and-testing for host updates. This where where the rolling pool update would come into play when using more then one host.
also look here - https://xcp-ng.org/blog/
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@acebmxer Thank you.
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Right, the RPU is an automated way to apply patches on all XCP-ng hosts in a Pool, migrating VMs to other hosts while minimizing the impact of host reboot.
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@julienXOvates That is the answer I was looking for! Can't give you karma unfortunately.
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@octopuss - this is a GREAT feature! I also have a small setup...a small 2 Host lab...but that's just enough to test a great deal of functions out. One of them I've tested is that. It's great. You have updates? Go to the Pool > Patches > and click that button. Done. That's literally it! One of several great features in XO imo.
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@coolsport00 Yes I can see the appeal, but for a server sitting in the corner of the living room that basically only hosts a NAS, torrent seedbox and an all around appliances management platform, two hosts sounds like a complete overkill and a headache, haha.
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@Octopuss Indeed!
Looking to implement this in my org, so am testing out all kinds of things.
Cheers! -
@coolsport00 Yes I can see the appeal, but for a server sitting in the corner of the living room that basically only hosts a NAS, torrent seedbox and an all around appliances management platform, two hosts sounds like a complete overkill and a headache, haha.
@octopuss Having two, three or more hosts may seem to be an overkill, however once you lose access to VMs, down etc due to updating hosts or the host crashes. You’ll then absolutely wish you had two or three hosts running XCP-ng!
Combined with shared storage, so VMs can migrate between them for updates and if properly setup and stable HA (if suitable for the setup bearing in mind HA recommendations from Vates).
Edit: Though 3 hosts are required and/or recommended for having HA using Vates’ native offering. Otherwise for a 2 host pool may need to look into something else for HA.
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@john.c Note that a two-host pool running HA can run into the split-brain issue if one of the hosts fails; it's highly recommended to have at least three hosts in an HA pool (or look into HA-Lizard if running a pool with two hosts and HA).
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@john.c Note that a two-host pool running HA can run into the split-brain issue if one of the hosts fails; it's highly recommended to have at least three hosts in an HA pool (or look into HA-Lizard if running a pool with two hosts and HA).
Right but also considering the in development Twinstor for when it goes stable and in production!
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