How does the proxmox cluster work, when removing nodes

[Krie9er]

Hi I played around with proxmox clusters and figured out that I don't need to use it.

I simply shutted down a node and figured that vms did not boot anymore after a system restart. Error message waiting on other nodes.

Unfortunatly I was stupid and integrated into the cluster my main server, which is running several vms and containers. I started already to remove the nodes with this tutorial.

But it confuses me, that in the remaining nodes the cluster participant still exists, in the left menu.

So basically I want to remove the entire cluster, due to no utilization of my old main system. But I am "afraid" to proceed again with the removel of my old system, because I don't want to brick my main system due to the "waiting on other nodes" error after a reboot.

So my question is: how would you close/kill the cluster? Can I just proceed with the, in the tutorial mentioned way, and remove the last cluster participant? Or do I need to reinstall my main Proxmox server to be able to restart the proxmox server ever again? I am not sure how proxmox will behave here.

best regards

 

[Deleted member 285549]

Hello Krie9er.
This official documentation is safe to use and you can follow it. I used it last week to remove a cluster node and unmount a cluster.
But before you do anything, always make a backup.
You can check the commands in the manual too, because it's very detailed.
https://pve.proxmox.com/pve-docs-6/chapter-pvecm.html
pve cluster cli commands:
https://pve.proxmox.com/pve-docs/pv...trong_pvecm_strong_proxmox_ve_cluster_manager
att
Marcio