[SOLVED] Remove or reset cluster configuration.

[shaftandspanner]

Just so anyone who else stumbles on this from the internet like I did after botching my first attempt to create a cluster - DO NOT USE THIS SCRIPT. The line "rm -R /etc/pve/nodes" will delete all of your VMs and LXCs.

I came to this page looking how reset a cluster after failing to add a new node.
I have a cluster with a single node on it (my main server) and wanted to add a new node. I ran these commands on my main server hoping to clean up the cluster and start again, but didn't include the line

rm -R /etc/pve/nodes

as I didn't want to risk losing my existing LXCs.

There were no error messages when I ran the commands, however after rebooting the main proxmox node (the only one I've run any commands on):

• My existing LXCs that are set to start on boot haven't started. In the task log, the task "Bulk start VMs and Containers" has a constant spinning status.
• When I try to manually start a LXC, I get the error message `cluster not ready - no quorum? (500)`
• When I try to start a shell on the node, I get the error message `undefined Code 1006` and in the task status, `Error: command 'usr/bin/termproxy 5900 --path /nodes/flanders --perm Sys Console -- /bin/login -f root` failed: exit code 1

How badly have I borked my node? Is this recoverable?

 

[fabian]

that sounds like your node still thinks it's part of a two-node cluster..

please provide

/etc/corosync/corosync.cfg
pvecm status

 

[wouser]

Hey ! I would like to give another answer, this worked for me in V 8.x.x,
thanks for the base script !

systemctl stop pve-cluster corosync
pmxcfs -l
rm -R /etc/corosync/*
rm -R /etc/pve/nodes
killall pmxcfs
systemctl start pve-cluster

Okay i did this and it screwed up my node.

I now cant see my VMs and LXCs anymore however they appear to still be running since i can use all my services? How to fix this?

Thanks in advance!

 

[wouser]

Just so anyone who else stumbles on this from the internet like I did after botching my first attempt to create a cluster - DO NOT USE THIS SCRIPT. The line "rm -R /etc/pve/nodes" will delete all of your VMs and LXCs.

My dumb ass did this.. My VMs and LXCs are still running. Anyway to recover them?

 

[fabian]

My dumb ass did this.. My VMs and LXCs are still running. Anyway to recover them?

if you have backups, those contain a copy of the guest config that you can drop into /etc/pve/local/lxc or /etc/pve/local/qemu . else, you need to recreate the configs from the current running state and memory