====== 2 nodes cluster ======

Possible to run QDevice daemon on external - 3rd device: [[https://pve.proxmox.com/wiki/Cluster_Manager#_corosync_external_vote_support|Corosync External Vote Support]]

  * On 1st node create cluster.
  * On 2nd node join to cluster (node must be empty - no VMs / CT)
  * Then add QDevice to cluster.

===== QDevice on PBS =====

on PBS:
<code bash>
apt install corosync-qnetd
</code>

on all nodes:
<code bash>
apt install corosync-qdevice
</code>

on one cluster node (separate cluster only network 192.168.188.0/24):
<code bash>
#pvecm qdevice setup <QDEVICE-IP>
pvecm qdevice setup 192.168.188.3 --network 192.168.188.1/24
</code>

<code bash>
pvecm status
Cluster information
-------------------
Name:             example.com
Config Version:   3
Transport:        knet
Secure auth:      on

Quorum information
------------------
Date:             Wed Mar  5 22:04:06 2025
Quorum provider:  corosync_votequorum
Nodes:            2
Node ID:          0x00000001
Ring ID:          1.9
Quorate:          Yes

Votequorum information
----------------------
Expected votes:   3
Highest expected: 3
Total votes:      3
Quorum:           2  
Flags:            Quorate Qdevice 

Membership information
----------------------
    Nodeid      Votes    Qdevice Name
0x00000001          1    A,V,NMW 192.168.188.1 (local)
0x00000002          1    A,V,NMW 192.168.188.2
0x00000000          1            Qdevice

</code>