Error fetching datastores

[Jorne]

Hi all,

I've been trying for some time to solve this "error fetching datastores" that I keep getting but as of today I haven't found any solution myself.
I was wondering if anyone could steer my into the right direction.

So I'm pretty new to Proxmox in general and my server isn't running much on it.
At the moment it constantly runs Adguard and PBS.
I have Tailscale set up on these too for remote connection.
Pinging to PBS works and as far as I can see port 8007 is open on Proxmox PVE.
PBS is making backups of what I asked it to do, so in a way there is no problem I guess?

PBS: proxmox-backup-server 4.2.1-1 running version: 4.2.1
PVE: pve-manager/9.2.3/d0fde103346cf89a (running kernel: 7.0.6-2-pve)
It's just my OCD wanting to get rid of any error codes lol.

If you need some more information I'll gladly hand that over.

Kind regards,
Jorne

 

[kosnar]

Hi Jorne,

by my opinion it is not good idea to name the server as "Server".

Your issue may be:
1. network layer issue - the path between PVE and PBS. (firewall, router, switch...any device in the path between them)
Did you check routing, firewall, IPS/IDS, packet loss?

2. IP collision (two or more device with same IP)
If you don't have another tool for investigating you can use this script for logging IP / MAC matching
# echo 'arp -n | grep "<IP of yout PBS>" | while IFS= read -r line; do printf "[%s] %s\n" "$(date +%Y-%m-%d_%H:%M:%S)" "$line"; done >> /var/log/dupliti_ip.test' > /opt/arp_check

Start this script ( /opt/arp_check ) periodically f.e. by cron or watch.

R.

 

[Chris]

Are you connection from PVE to the PBS by IP or domain name (from a quick glance I expect the latter?). If so, most likely your DNS resolver on the PVE host points to the AdGuard VM, so during backup of that VM name resolution temporarily fails? If possible, try using the static IP of the PBS for the connection instead.