OMV7 - no access to services

Hi, I have the following dilemma. I have already installed OpenMediaVault 7 several times on my HP Microserver Gen8, and the same thing happens every time. The installation works flawlessly: boot from USB stick and install on the SSD. Then I install all updates and the OMV Extras. I install Docker and, using Docker Compose, set up my containers (DuckDNS, Nextcloud, Calibre). Then I configure the SMB shares and I’m happy with the setup.

But after a few days, I can no longer access the OMV WebGUI or any other service I have installed. It happens completely out of the blue — no reboot, no other changes. Even SSH is no longer accessible. Using a monitor and keyboard, I can still access the CLI, but all variations of network configuration using omv-firstaid don’t help. Deleting the iptables rules doesn’t help. Setting a static IP address doesn’t help. Stopping the Docker service doesn’t help. Running omv-salt stage run deploy doesn’t help either.

I can ping all hosts in the LAN, and I can also ping hosts outside of the LAN. Checked the listening ports -> looks good. I have now reinstalled OMV7 for the fifth time because of this, and I honestly have no idea what else to try. Does anyone here have an idea?

Quote from BernH

I never used an HP Microserver, so if it's something specific to that hardware I can't really help.

I tend to prefer installing debian server first and then use the OMV install script to install OMV. I do this because I ran into an issue several OMV major versions ago where the OMV ISO was not install drivers/firmware for all the hardware I was running at the time, but the debin installer did, so I have just continued to use this process.

If you want to give that a whirl, here are the links to what you would need:

Thanks for the tips. Using your links, I installed Debian and immediately had the same issue. Directly from the server (with monitor and keyboard), I was able to ping everything in the LAN and on the internet. DNS resolution also worked, but I couldn’t access Apache or connect via SSH. I then reinstalled OMV from USB, and everything is working again for now. I’ve now set up a job that reboots the server every 48 hours. Let’s see if it lasts longer this time.

Well, since i've a cron job running which does a reboot every 48h hours everything works fine.