I\'ve done a new install of nginx 1.6.3 and passenger 5.0.15 on Ubuntu 14.04 from source in order to add tracing components from AppNeta for my ROR 4.2 app on one of my serv
In case anyone else is having this problem when starting Passenger using a systemd service, this might be due to systemd's private /tmp. The problem was solved by adding PrivateTmp=false to the service file.