Clustering Error 500

[3giQuC]

Hi,

I have three computers that I would like to turn into a cluster.

I'm running

pvecm add 10.1.1.160

on the node to join.
I enter the root password of the cluster, verify the key fingerprint. Output:

Login succeeded.
Request addition of this node
500 can't add existing node 'pve'

To troubleshoot, I reenabled plain password login, root login, enabled PAM.
I also changed the hostnames of the cluster and the node, so the computers don't get confused.

But I'm still getting the same error messages.
Please help!

 

[3giQuC]

I set up ssh keys on each machines so that their roots can talk to each other without passwords. But I'm still getting the error

 

[dietmar]

Seems that node (a node with that name) is already part of the cluster? Ip address 10.1.1.160 is the address of an existing cluster member?