Localhost:8080 - Site can't be reached

I installed the latest OpenHab on an RPI4, standalone, connected with ethernet to my router.

I did login directly to the PI (connected to KVM). Now, when I try to connect to localhost:8080, I get the ‘Site can’t be reached’ error message … ???

Any clue/hint as to what I’m doing wrong?

My RPI device on the network is called: openhabiandevice

There can be many reasons. Listing all of them here would blow up my reply and would provide you may items to check.
Let’s try to first analyze the problem a bit more in detail:

  • what is the content of the log file /var/log/openhab/openhab.log assumed you installed OH3. In case you have OH2 it is located at /var/log/openhab2/openhab.log
  • what is the output of
sudo systemctl status openhab 


sudo systemctl status openhab2
  • what is the output of
sudo netstat -tulpn | grep java


sudo journalctl -x | grep openhab

Is my suspicion that you’re trying to hit localhost:8080 from a machine that isn’t your RPi4?

If that’s the case, change “localhost” to “openhabiandevice”, or the ip address for openhabiandevice.

Localhost is relative to the computer making the statement, it literally means “this device”.

If that’s no help, try working through where the blockage is. If you type netstat -ln into a command prompt on the RPi4, it will show you all listening ports on that machine. look for anything with :8080 on it. means all interfaces are listening, means just the local host
192.168.xxx.xxx:8080 means it is listening on that address (if you swap the xxxs for numbers)

So this will tell you if the web server service is running and listening for connections.

If it’s not, that will be why you can’t connect. If it is, then seriously you should be able to hit it.

Let me know how you go and we can go from there.