[SOLVED] Join Cluster Failed: "* this host already contains virtual guests"

[jsalas424]

I'm trying to join a new PVE node to an existing cluster. All the machines are on PVE 7.1-8.

When I attempted to join the existing cluster from the GUI's "Assisted join", I get the following error.

()
detected the following error(s):
* this host already contains virtual guests
TASK ERROR: Check if node may join a cluster failed!

There is 1 VM on the new node and obviously the cluster has many VMs/CTs running.

Thanks in advance for the guidance!

 

[vesalius]

The new host can not have a VM or LXC setup, even shutdown, when it joins a cluster.

if you want to proceed will have to delete that single VM on the unjoined node first. You can backup the VM and save to USB or network disk then restore from backup later or move it to one of the other already joined cluster nodes before deleting, same process backup, move it via network or USB and then restore from backup on the new Proxmox node. Verify it works and proceed.

https://pve.proxmox.com/pve-docs/pve-admin-guide.html#pvecm_join_node_to_cluster

 

[jsalas424]

Thanks, I backed up to a temp NFS share and restored from that, worked great.

 

[spergberger]

So if I have an existing host with a bunch of existing VMs then build a new pve server (with no guests) I can create a cluster on the first pve host and add the empty new host to the cluster?

 

[UdoB]

So if I have an existing host with a bunch of existing VMs then build a new pve server (with no guests) I can create a cluster on the first pve host and add the empty new host to the cluster?

Simple answer: yes, that's the recommended way...

 

[spergberger]

When you say, "The new host can not have a VM or LXC setup" I think you mean "the new host cannot contain any VMs or LXC containers."