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    Experimental update of CentOS packages

    Scheduled Pinned Locked Moved Development
    21 Posts 8 Posters 6.2k Views 5 Watching
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    • michaelM Offline
      michael
      last edited by

      Updating one of my test servers now. (Dell R610)

      If all goes well, I will update another test server (Dell R620) later this week.

      1 Reply Last reply Reply Quote 2
      • michaelM Offline
        michael
        last edited by

        So far I have run into one issue. When I force a live migration the VM I migrate gets stuck at 99% and sits there. I let it sit overnight to see if it would go through, but it didn't .

        When attempting to cancel the migration it left a copy of the VM frozen on each host. When attempting to reboot/shutdown or even force reboot/shutdown I would get an error saying they did not exist.

        Rebooting the hosts fixed the this issue, but left me with a full copy of the VMs on each host. I was also unable to reboot the host I migrated the VM from unless I used the xsconsole window. XCP-NG Center did not work.

        If I get time today I will roll back the R610 to 7.6 and see if I have the same results.

        Here are a few photos: https://imgur.com/a/wYw6AdL

        Other than this edge case issue, everything seems to be working fine so far!

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        • stormiS Offline
          stormi Vates 🪐 XCP-ng Team
          last edited by

          The live migration issue may, or not, be related to this: https://xcp-ng.org/forum/topic/522/unable-to-migrate-live-vms-after-upgrading-from-xcp-ng-7-4-to-7-5/

          michaelM 1 Reply Last reply Reply Quote 0
          • michaelM Offline
            michael @stormi
            last edited by

            @stormi

            Do you have any suggestions for me to try to help see if this is related?

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            • stormiS Offline
              stormi Vates 🪐 XCP-ng Team
              last edited by

              Yes, you could install emu-manager from XenServer 7.6 (present on their installation ISO) and see if live migration works better (note that reproducing the issue may depend on VM load or other factors, so if it does migrate well, try several times to confirm the result).

              Once you've got the RPM:

              rpm -e --nodeps xcp-emu-manager
              yum install emu-manager-version_and_such.rpm
              xe-toolstack-restart # may not be needed but doesn't hurt
              
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              • michaelM Offline
                michael
                last edited by

                This fixed the issue for a few migrations. The latest one put the VM into a suspended mode and then disconnected me from the host. I restarted the tool-stack on each host and when I went to reconnect to the host I was migrating the VM from it would let me in for a moment and then kick me out again and it was in a maintence mode according to the icon. To resolve this I rebooted the host. I'm currently seeing if I can replicate this behavior.

                Other than this I haven't run into any issues so far.

                Let me know if there is anything specific you would like tested.

                1 Reply Last reply Reply Quote 0
                • F Offline
                  fibrewire
                  last edited by

                  i know this topic is old, but is this still going on? I would like to participate.

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                  • olivierlambertO Offline
                    olivierlambert Vates 🪐 Co-Founder CEO
                    last edited by

                    Problem is considered solved now.

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                    • stormiS Offline
                      stormi Vates 🪐 XCP-ng Team
                      last edited by stormi

                      Since I started this topic, XCP-ng version 8.0 came with updated CentOS packages (to CentOS 7.5). Now the versions remain stable but I'm regularly checking CentOS security updates for important updates that may be necessary to us.

                      N 1 Reply Last reply Reply Quote 0
                      • N Offline
                        nackstein @stormi
                        last edited by

                        @stormi I have a doubt, you say that XCP-ng 8.0 comes with packages updated to CentOS 7.5 plus some custom package like kernel.
                        If I update the host via yum it goes to the latest CentOS 7.x version plus latest updates, I'm right?
                        I don't see any yum settings that keep it stuck to 7.5.
                        I mean, the updates repo have this source:
                        mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
                        and $releasever = 7 widhtout any minor release specification, so I assume an update takes my base OS to the latest minor plus updates.

                        stormiS 1 Reply Last reply Reply Quote 0
                        • stormiS Offline
                          stormi Vates 🪐 XCP-ng Team @nackstein
                          last edited by

                          @nackstein If you update to latest CentOS you probably basically just break your system. The CentOS repos are not active by default on purpose. We let them as a convenience for those who really really need to (and understand the risk) to cherry-pick additional software that we don't offer in our own repos.

                          N 1 Reply Last reply Reply Quote 1
                          • stormiS Offline
                            stormi Vates 🪐 XCP-ng Team
                            last edited by

                            See also https://github.com/xcp-ng/xcp/wiki/Additional-packages

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                            • N Offline
                              nackstein @stormi
                              last edited by

                              @stormi enabled=0, didn't see it! thanks 👍

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