Make a Proxmox Cluster and Delete a Proxmox Cluster

We make a proxmox cluster, transfer all the VM's and containers, and finally delete that cluster.

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Remove Node from cluster

turn off node you want to remove

pvecm nodes

pvecm delnode (name of the node)

reboot

DELETE CLUSTER

pvecm expected 1

Stop the running cluster

systemctl stop pve-cluster

Force the nodes to run in local mode

pmxcfs -l

Delete all the cluster configuration files

Stop cluster from running

systemctl stop pve-cluster

Reboot and cluster should be gone

rm /etc/corosync/authkey

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#LoResDIY

[originalk]

this was a great/concise rundown on how to delete a node but more specifically delete a cluster. i had tried it out for giggles and it turned out to be more of a hassle than anything due to my lack of good hardware, the HA stuff is nice but not necessary until i get some more hardware stood up, so this worked out perfectly for me. thank you sir!

[santaclaus]

No backups? No mercy! Thanks for your efforts. Appreciate it!

[paulbunion]

This saved my bacon. Had to do this at work and wasn't completely sure how to proceed w/o blowing something up. Worked like a charm first go-around. Cheers to you sir!

[Hydro-MK]

Thank you LoRes, your guide helped me to bring back cluusted that wont turn on VMs.

[sparkie]

perfect walkthrough! Thank you for the expected 1 command too! Working on migration from an old node to a new one with more storage etc., has been very helpful thus far.

[yasaralzakout]

Great work, thank you a lot; I was struggling after changing my node IP address while it was connected to a cluster; it took a lot of research without getting a solution; your video is a complete solution for this issue. I appreciate your hard work.

[AdmredEisaPinar]

thank you so much. His method was surgical. excellent

[HigaoSR]

Thank You, I did the step by step and it worked in my environment.

[marifhossain]

Thanks! Saved days of work my friend. That's how we are evolving exponentially with the help of other's experience.

[noisynerdman]

Thanks sooo much for this. I was compiling knowledge from various blogs after i learned I didn’t need a cluster. Good way to fix without having to redo a hypervisor from scratch. :) yes agreed always back up and probably have a backup of that backup

[Weeem]

I found I had to run these commands on both nodes for it to release the quorum (v8.2.4)
Was a bit of panic, but got there in the end :)

[amammes]

Thanks so much, those steps worked fine for me on 7.4-3.

[vng]

After you remove the temp node from the cluster, will you still be able to use that node as a standalone? Or do we need to reinstall Proxmox on that temp node after it has been removed?

[danieldewindt]

Grate, finally a way to safely add and delete.

I'm going to reinstall proxmox
i'm stuck with some pev servers in my datacenter tree
All vpe servers are deleted from the node

still all systems work fine

[Skippygamer]

I disliked the video at first but you pulled me and helped at the end!!!

[fio_mak]

just wondering what happened to Lo-Res-Temp node? does it needs re installation or it just works as an independent node on its own?

[fortedexe]

Is it possible to join those 2 clusters again after delete it ?
I want to change the host name, so I need to separate the cluster first, change hostname, then join it again. I dont know if it possible with your delete method ?

[brunocabrera]

Hi there, I followed your video to destroy the cluster, because one of them isn't allways on. All it0s ok, but the cluster continues showing me the 2ond node. What I had to do to make it disapear is to delete folder on This was on a proxmox 7.3-3 version. Now all VM starts ok and the cluster has gone. Thanks!

[ierosgr]

An interesting follow up to this video would VMs and Containers to another node without the two nodes being members of the cluster. Maybe backup the VMs to an attached external drive or an remote share ( that would be an extra video of toy do it in parts) and then attach that hdd or remote share to the other node and restore (no you can t restore since this node is with no VMs) so scp that VM file to the appropriate storage and path and start it up. Probably it will work

[thegreyfuzz]

PM 7.0-2 - Joining cluster hangs in the GUI, but the action succeeds... did it to me add each of the 4 nodes. weird bug I guess.