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Please, post here the guide that you are following

Did you install Proxmox on Debian, or did you use an ISO installer?

Perfect.. I would try to create cluster by using GUI interface. This process should be completed smoothly.

just to be sure, please post pvecm status on pve1 Since you have tried to create cluster serveral times we need to be sure that no "cluster trush" left on the pve1. After that, I would attempt to create the cluster from scratch.

try to upgrade PVE at the same version and let me know. On the main node, check if there are any "zombie" node in /etc/pve/nodes

On the Hardware manu for that VM, select "Unused Disk" and than ADD MM

Try to use pvecm add --force instead of pvecm add only MM

May be there is an incompability from your proxmox to your nfs server, Try to update nfs server and retry.

I was sure at 99% about a switch problem Happy hear you fixed it :)

You can try to limit read/write in the "Bandwidth" tab but I'm not sure that this limit limits also the disk migration.

Are you using VLAN in your network? I noticed that "vlan aware" tag is enable on vmbr0. If you don't configure trunk on your phisical switch properly, you won't be able to comunicate from between VMs HOST1 and VMs HOST2. MM

show me output of df -h command please

Did you modify /etc/export file? show me output of df -h command please

if I understood correctly, you have to add /mnt/BACKUP on like this my "external" is your "BACKUP" Bye MM

Ok, you can first of all check if check RAID controller firmware is updated. In pretty sure that the problem is the RAID controller.

Hi, you can use this ISO LIST MM

Hi, Are you using RAID controller?

I integrate the 2) point Delete that node from the Proxmox cluster After that, you will still see the OSDs (in down state) in the Ceph configuration Stop and destroy all OSD layer, ONE by ONE ceph osd rm osd.X ceph auth del osd.X ceph osd crush remove osd.X ceph osd crush rm <node_name> ceph...

Hi, If you want to do a very crear soluzion, you can: 1) Tourn that node off 2) Delete that node from the Proxmox cluster 3) Change your hardware (Mainboard, CPU, RAM, HBA Controller and Network Cards, leave the same hard drives) 4) Re-Install proxmox (you could restore exacly the...

You are welcome! may you set the post as SOLVED? ;)