[SOLVED] proxmox 7 to 8 migration

[Dale.Sykora]

We have a 4 node proxmox 7.4 cluster with external SAS storage directly connected as shared LVM storage where VMs are stored. We need to migrate the nodes to proxmox 8 as proxmox 7 is end of life.

Can we migrate by removing a node from cluster, install proxmox 8 and re add to existing proxmox 7 node cluster?
If so, can we then live migrate from proxmox 7 node to proxmox 8 node?

Thanks,
Dale

 

[Dale.Sykora]

We have a 4 node proxmox 7.4 cluster with external SAS storage directly connected as shared LVM storage where VMs are stored. We need to migrate the nodes to proxmox 8 as proxmox 7 is end of life.

Can we migrate by removing a node from cluster, install proxmox 8 and re add to existing proxmox 7 node cluster?
If so, can we then live migrate from proxmox 7 node to proxmox 8 node?

Thanks,
Dale

I found the answer here. https://forum.proxmox.com/threads/cluster-mix-pve-7-8.133053/

 

[t.lamprecht]

While the re-installation, then re-join and live-migrate is possible, it also needs you to take some special care, especially if you want to re-joing the reinstalled node with the same nodename. So I'd not recommend doing so without testing this first. Tests can be done in a virtualized environment (i.e., a few VMs that have PVE installed as level 2 hypervisor).

That said, do you actually have a specific reason for favoring a re-installation over an in-place upgrade of the whole cluster? As the latter would also allow live-migration and is often the safer route.
See https://pve.proxmox.com/wiki/Upgrade_from_7_to_8

 

[Dale.Sykora]

While the re-installation, then re-join and live-migrate is possible, it also needs you to take some special care, especially if you want to re-joing the reinstalled node with the same nodename. So I'd not recommend doing so without testing this first. Tests can be done in a virtualized environment (i.e., a few VMs that have PVE installed as level 2 hypervisor).

That said, do you actually have a specific reason for favoring a re-installation over an in-place upgrade of the whole cluster? As the latter would also allow live-migration and is often the safer route.
See https://pve.proxmox.com/wiki/Upgrade_from_7_to_8

Thanks Thomas! We have hardware vendor apt repositories, and did not want issues with that. However, since in-place is safer, we will try the first server in-place. If successful, we will do the rest the same way.

 

[t.lamprecht]

Thanks Thomas! We have hardware vendor apt repositories, and did not want issues with that. However, since in-place is safer, we will try the first server in-place. If successful, we will do the rest the same way.

As long as your hardware vendor also provides the necessary apt repos for PVE 8, or well Debian bookworm based releases, you should be fine, especially when testing this first on a server where all guests got moved away.

Otherwise, I'd recommend asking your HW vendor first to ensure PVE 8 / Debian Bookworm is supported, if not already done.

 

[Dale.Sykora]

Thanks Thomas! We have hardware vendor apt repositories, and did not want issues with that. However, since in-place is safer, we will try the first server in-place. If successful, we will do the rest the same way.

The in place upgrade went well. Thanks again for the advice Thomas!

 

[t.lamprecht]

Great to hear! You could then mark this thread as solved (above the top post is an "Edit Thread" button that can be used to set the thread prefix to "solved").