Remove Node from Proxmox Cluster

Step 1 : Migrate all VMs to another active node

Migrate all VMs to another active node. You can use the live migration feature if you have a shared storage or offline migration if you only have local storage.

Step 2 : Display all active nodes

Display all active nodes in order identify the name of the node you want to remove

root@proxmox-node2:~# pvecm nodes
Membership information
----------------------
Nodeid Votes Name
1 1 proxmox-node1 (local)
2 1 proxmox-node2
3 1 proxmox-node3
4 1 proxmox-node4

Step 3: Shutdown (permanently) the node that you want to remove

Please be carefull, it a permanently remove !!!

  • Never restart the removed node
  • Don’t assign the local ip address of the removed node to a new node
  • Never assign the name of the removed node to a new node

Step 4 : Remove the node from the proxmox cluster

Connect to an active node, for example proxmox-node2.

root@proxmox:~# pvecm delnode NodeName

For Example :

root@proxmox-node2:~# pvecm delnode proxmox-node3

Step 5 : Remove the removed node from the proxmox GUI

Log in to an active node, for example proxmox-node2.

root@proxmox-node2:~# ls -l /etc/pve/nodes/
proxmox-node1 proxmox-node2 proxmox-node3 proxmox-node4

All nodes have is own directory (VM’s inventory, for example), the directory /etc/pve/nodes/ is synced between all cluster nodes.

The removed node is still visible in GUI until the node directory exists in the directory /etc/pve/nodes/.

If you want to remove from Proxmox GUI the node previously deleted , you just need to delete the directory /etc/pve/nodes/NodeName.

root@proxmox-node2:~# mv /etc/pve/nodes/NodeName /root/NodeName

Src: https://sysadmin-community.com/remove-node-from-cluster-proxmox/

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