Proxmox Cluster 3 nodes, Monitors refuse to start

[Danny-10-10]

Hi all, i am facing a strange issue, after using having a proxmox pc for my self hosted app I decided to play around and create a cluter to dive deeper into the HA topics, i dowloaded the latest ISO and build up a cluster from scratch. My Cluster works, i can see every node, my ceph storage says everythng is ok. Managers works on all 3 node, metadata is ok on all 3 nodes but Monitor started only on the first node. When i try to make it start on the others node, nothing happen.
This is the syslog of the second node

Oct 28 00:13:47 pve2 ceph-mon[1041]: 2025-10-28T00:13:47.531+0100 7265f2d4c6c0 -1 received signal: Hangup from killall -q -1 ceph-mon ceph-mgr ceph-mds ceph-osd ceph-fuse radosgw rbd-mirror cephfs-mirror (PID: 2949170) UID: 0
Oct 28 00:13:47 pve2 ceph-mon[1041]: 2025-10-28T00:13:47.531+0100 7265f2d4c6c0 -1 mon.pve2@0(leader) e1 *** Got Signal Hangup ***
Oct 28 00:13:47 pve2 ceph-mon[1041]: 2025-10-28T00:13:47.554+0100 7265f2d4c6c0 -1 received signal: Hangup from (PID: 2949171) UID: 0
Oct 28 00:13:47 pve2 ceph-mon[1041]: 2025-10-28T00:13:47.554+0100 7265f2d4c6c0 -1 mon.pve2@0(leader) e1 *** Got Signal Hangup ***

this is from the third node

ct 28 00:48:10 pve3 ceph-mon[1030]: 2025-10-28T00:48:10.850+0100 7f59362b76c0 -1 received signal: Hangup from killall -q -1 ceph-mon ceph-mgr ceph-mds ceph-osd ceph-fuse radosgw rbd-mirror cephfs-mirror (PID: 740342) UID: 0
Oct 28 00:48:10 pve3 ceph-mon[1030]: 2025-10-28T00:48:10.852+0100 7f59362b76c0 -1 mon.pve3@0(leader) e1 *** Got Signal Hangup ***
Oct 28 00:48:10 pve3 ceph-mon[1030]: 2025-10-28T00:48:10.871+0100 7f59362b76c0 -1 received signal: Hangup from (PID: 740343) UID: 0
Oct 28 00:48:10 pve3 ceph-mon[1030]: 2025-10-28T00:48:10.871+0100 7f59362b76c0 -1 mon.pve3@0(leader) e1 *** Got Signal Hangup ***

I am kinda stuck

 

[UdoB]

I have no specific hint, but only a non-ceph-specific one: make sure that /etc/hosts has identical content on all nodes.

This must work on each node and generate exactly the same output:

for HOST in pve pve2 pve3 ; do ssh root@$HOST hostname -f; whoami; done

Disclaimer: I am not using Ceph.

Btw: "Proxmox Datacenter Manager" might be the wrong forum...?

 

[Danny-10-10]

I am not sure about the right section of the forum

 

[Danny-10-10]

the different node give me pve.local pve2.local pve3.local, and i think is correct