[SOLVED] Promox 6: problem with noVNC - failed to connect to server

[zoltan.yy]

I also have the VNC issue now.

Before, just having a single proxmox server (PVE) everything worked fine. Now I added a second proxmox server (PVE-BACKUP) and formed a cluster:

View attachment 50368

Occasionally VNC connections on PVE work .. after a while it does not anymore (Chrome, Safari).

What is weird as soon as I boot PVE-BACKUP server (this one is not running 24/7 like the main server) all of the sudden the VNC connections on my main server work again?

I tried to ssh into PVE and run the command:

ssh -o 'HostKeyAlias=pve' root@192...

But no success ...

UPDATE:
ok .. with my 2 node cluster setup and one node not being online 24/7 the solution was actually to execute

pvecm expected 1

in PVE shell.

Thank you,
it was exactly my problem.
I have a Primary node (having all my VMs) and a Secondary node (empty) in a Cluster.
While my secondary node was temporarily disconnected from the network, I had the VNC issue on my Primary node.
As soon as I connected the "Secondary node" to the network, the VNC started to work on my Primary node again.
Thank you for the hint.