pve versions when extending a existing pve cluster with new nodes

[rainer042]

Hello,

I am running a five node pve cluster with PVE version 7.3-4 . I would like to add three nodes which at the moment build a small cluster on their own. So I have to reinstall these nodes and then join each new installed node to the existing five node cluster.

The question is how important is the pve version I install the new nodes with? There is an installer image version 7.4-1. Can I install this version on a new node and then join it to the 7.4-3 cluster? And if I can, what about migrating VMs between 7.3-4 and 7.3-1, does it work in both directions?

If not, then the only way I know would be to upgrade the existing cluster to the latest 7.4-x version and do the very same with the new nodes to be installed before joining.

Thanks
Rainer

 

[Chris]

Can I install this version on a new node and then join it to the 7.4-3 cluster? And if I can, what about migrating VMs between 7.3-4 and 7.3-1, does it work in both directions?

Hi,
yes this is possible. Minor versions are compatible and you can join a v7.4 node to a v7.3 cluster. Also migrating VMs within the cluster should not be a problem, as long as the CPU types of the cluster nodes are not to different.

Nevertheless upgrading all nodes to the latest version is recommended.