How to install Phusion Passenger 4 on Ubuntu (on apache2 or nginx)?
问题 While I understand that Passenger 5 is currently the standard, I have a unique use case requiring me to use Passenger 4 while I upgrade a current application. I can't seem to find any particular instructions on how to install Passenger 4 from the Passenger site. I also cannot seem to find any apt repositories with Passenger 4 either. Are there any resources available for doing this? And can this be done via apt? 回答1: Found out the answer in this old blog article from Phusion. The Passenger