[SOLVED] Migration 5.4-15 to 6 : issue whit cluster configuration


Dec 18, 2019
Hello, it's time to migrate :) but i've that warn from pve5to6:


PASS: systemd unit 'pve-cluster.service' is in state 'active'
PASS: systemd unit 'corosync.service' is in state 'active'
PASS: Cluster Filesystem is quorate.

Analzying quorum settings and state..
INFO: configured votes - nodes: 1
INFO: configured votes - qdevice: 0
INFO: current expected votes: 1
INFO: current total votes: 1
WARN: cluster consists of less than three nodes!

I dont use cluster, i only have a server but i played around whit the gui when i installed the server three years ago and cluster "came up"

it's posible to remove the cluster configuration without losing data? if not, is there a problem updating the system?

thanks in advance

As Proxmox VE 6 is already EOL I'd say the time to migrate started quite a while ago ;)
it's posible to remove the cluster configuration without losing data? if not, is there a problem updating the system?
It is possible, but I don't think it's the best idea to do now, i.e. might be a bit invasive and it's not required if it's just one node "cluster"; the check maybe could special-case the situation were there's only one node configured in a cluster.

So, better to ignore the warning, at least if you really never joined any other node to this cluster.
If unsure, you could check if /etc/pve/corosync.conf contains only one node entry in the nodelist section.
only one node:

root@svrmetamvs1:/etc/pve# cat corosync.conf
logging {
debug: off
to_syslog: yes

nodelist {
node {
name: svrmetamvs1
nodeid: 1
quorum_votes: 1

quorum {
provider: corosync_votequorum

totem {
cluster_name: metaclusterprox
config_version: 1
interface {
ringnumber: 0
ip_version: ipv4
secauth: on
version: 2


then i suppose if i ignore de warning and upgrade i'll still have the cluster info, right?
Exactly, above is only mentioning one node and thus the warning can be ignored.
I'll schedule the time then. Update snapshots, shutdown and backup virtual machines, verify backups, update proxmox and pray :)
I'll let you know how everything goes
Today was the day, i put all the vm's in other server and upgrade, first 5 to 6, then 6 to 7 and 7 to 8. All perfect, without any problem following the Proxmox official documentation.
It is very comforting to work with such good software.
  • Like
Reactions: tom


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!