Strange connectivity issue

[macson]

I've been spending some time playing with an old desktop computer and have manged to install Proxmox 8.0.3 and get things working.

I can connect to the web UI and also SSH to the machine, I have also managed to upload a ISO and create a VM.

My problem is that every now and then the WebUI loses connection to the machine and at the same time the SSH-connection is dropped. The machine responds to ping-requests to the IP and I can SSH to the VM that is running. After a while (could be 1-15 minutes) the web-UI and SSH-connection to the host machine starts to work again, then it goes around like this.

I've setup the IP for the machine to be a static IP in my router (based on the MAC) and the same IP is configured in /etc/network/interfaces. I have some Linux skills but far from expert.

Anyone knows where I should start investigating?

 

[Dunuin]

Anyone knows where I should start investigating?

Have a look at the syslog/journald what logs were reported when the node was unavailable. A look at the resource graphs also wouldn't hurt.
Assigning too much resources to your VM could also cause PVE to not respond.

 

[macson]

Turns out that my problem was that I've entered a static IP while my router wanted to use DHCP, I've configured the router to give out a "fixed" IP to this machine but still had problems. After fiddling with /etc/network/interfaces and changed to use the IP from DHCP (which I know is always the same anyway) this works great.