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Can it run in a mixed version cluster no HA for a long period of time or should I upgrade the other two nodes as soon as possible?

Currently, have a non HA proxmox cluster running on 5.2-1 and need to add another cluster node. However, I cannot get access to a 5.2-1 proxmox iso and only can access the 5.4 iso. Can you add a 5.4 proxmox node to a 5.2-1 cluster without problems? The reason I am doing this is because I would...

Thank you so much Aaron for your reply. I really appreciate your quick response.

We have a two-node proxmox cluster and we need to shutdown one of the nodes for maintenance. This node happens to also be the node configured in the totem section of the corosync.conf file. How would we go about doing this safely so that we do not disrupt vm's on the other node? logging {...

Issue: Accidentally broke the cluster by issuing the pvecm e 1 command. Is there any possible way to restore the cluster if the corosync.conf files exist? Description: My company moved offices and we set our proxmox cluster on new ip addresses. After correcting the addresses and DNS we found...