Separate a Node Without Reinstalling

[Talha]

Hi, I tried to Separate a node from the cluster without re-installation, but when I enter Proxmox administration, the name of the node is still there, but there is no green icon and not online.

Output from the node that needs to be separated:

root@prx-7:~# pvecm nodes
Error: Corosync config '/etc/pve/corosync.conf' does not exist - is this node part of a cluster?

 

[shanreich]

Did you run pvecm delnode oldnode on another node in the cluster or on the node that should be separated? It needs to be run on a node that should still stay in the cluster afterwards.

What is the output of pvecm status on a node that is still in the cluster?

 

[mira]

Do you still have configurations under /etc/pve/nodes/<removed-node>/ on your other nodes?
If so, remove those after making sure you no longer need them. Once removed, you should no longer see the node in the GUI.

 

[Talha]

Did you run pvecm delnode oldnode on another node in the cluster or onthe node that should be separated?

Yes.

What is the output of pvecm status on a node that is still in the cluster?

root@prx-7:~# pvecm status
Error: Corosync config '/etc/pve/corosync.conf' does not exist - is this node part of a cluster?

 

[shanreich]

root@prx-7:~# pvecm status
Error: Corosync config '/etc/pve/corosync.conf' does not exist - is this node part of a cluster?

As far as I understand this is the node that got separated, please run it on a node that is still part of the cluster.

Please also try the advice posted by mira above first, since this might already resolve your problem.

 

[Talha]

Do you still have configurations under /etc/pve/nodes/<removed-node>/ on your other nodes?
If so, remove those after making sure you no longer need them. Once removed, you should no longer see the node in the GUI.

When i remove /etc/pve/nodes/oldnode, problem solved on cluster. However, the problem persists on the server that has been removed from the cluster.

 

[shanreich]

When i remove /etc/pve/nodes/oldnode, problem solved on cluster. However, the problem persists on the server that has been removed from the cluster.

You also need to remove the folders of the other nodes under /etc/pve/nodes/ on the node that you removed from the cluster.

 

[Talha]

As far as I understand this is the node that got separated, please run it on a node that is still part of the cluster.

Please also try the advice posted by mira above first, since this might already resolve your problem.

Cluster information
-------------------
Name:             PRX
Config Version:   16
Transport:        knet
Secure auth:      on

Quorum information
------------------
Date:             Tue Dec  6 15:44:15 2022
Quorum provider:  corosync_votequorum
Nodes:            2
Node ID:          0x00000002
Ring ID:          1.180d
Quorate:          Yes

Votequorum information
----------------------
Expected votes:   2
Highest expected: 2
Total votes:      2
Quorum:           2
Flags:            Quorate

Membership information
----------------------
    Nodeid      Votes Name
0x00000001          1 10.***** (This is another running node. The deleted node does not appear here.)
0x00000002          1 10.***** (local)