I’m using the PHP tracker for some reason since a while now and I never had any problems.
Since some days, I’m running latest version of Piwik on a Ubuntu server 15.10 and I have a problem:
All of my visitor have the public IP of the server.
The database is on another server.
I tried some solutions as
proxy_client_headers = HTTP_X_FORWARDED_FOR
proxy_host_headers = HTTP_X_FORWARDED_HOST
and I would like to know if you have more solutions !