Reinstalling a node within a cluster

John Allison

Well-Known Member
Feb 1, 2018
33
4
48
Gateshead UK
www.adlinktech.com
I have a node which keeps randomly rebooting, sometimes it will go weeks and be fine then suddenly reboot. Its a Dell Poweredge 630, Dell have checked the hardware and say they cannot find anything so im in the horrid position of having to perform a clean re-install. Im not convinced that it isnt hardware but cant think of any other way to prove this.

As this node is part of a 3 node cluster, is removing it, re-installing it, and then re-adding it to the cluster an easy process? Any tips?
 
  • Like
Reactions: Darious
If you delete the previous node as mentioned in the documentation ('pvecm delnode <node>') it should be fine adding a node with the same name and IP again.
 
I followed the instructions fine, but the removed node was still showing up in the web view, so I deleted the node directory under /etc/pve/nodes/ from a remaining node.
Then after re-installing, I also had to reissue the subscription key in order to get updates working again.
Initially, the webview showed a load of ???? symbols for one of the old nodes, but after a reboot that seemed to clear up.
However when trying to access the newly re-installed node from one of the other nodes I got errors relating to ssh keys,
and so had to run 'ssh-keygen -f "/etc/ssh/ssh_known_hosts" -R xxxxxxxx' a few times, which fixed that problem.

So theres' a bit of cleaning up missing from the documentation, could this be added, or was I just unlucky with my experience?
 

About

The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!