UniFi AP Pro and controller

I recently got myself two UniFi AP Pro‘s. While getting them installed, which requires a Java based controller software installed on a computer, I found a couple of problems. The foremost was that the controller didn’t start. After having a look at the unifi logs (/var/log/unifi/server.log on Ubuntu 12.04) I found out that it tried to use an already allocated port (8081). I hade to change that port number both in /usr/lib/unifi/data/system.properties and /usr/lib/unifi/etc/system.properties for the changes to follow through. Sadly the server didn’t understand changing the binding IP, even though changing in those two files, but rather listens on 0.0.0.0. Firewall away and debug more another day…