Phusion passenger works in standalone, but fails as virtual

[Ed Bruner]

Complete newb to rails & passenger.

I'm running passenger 3.0.19 on Linux Mint.  My app runs fine with WEBrick(rails server) and with standalone passenger.  When I try to use mod_passenger I get "FATAL: Peer authentication failed for user "mmum_user" (PG::Error)":

apach2.conf:

#Phusion Passenger config info

   LoadModule passenger_module /var/lib/gems/1.9.1/gems/passenger-3.0.19/ext/apache2/mod_passenger.so

   PassengerRoot /var/lib/gems/1.9.1/gems/passenger-3.0.19

   PassengerRuby /usr/bin/ruby1.9.1

#Suppose you have a Rails application in /somewhere. Add a virtual host to your

#Apache configuration file and set its DocumentRoot to /somewhere/public:

   <VirtualHost *:80>

      ServerName localhost

      # !!! Be sure to point DocumentRoot to 'public'!

      DocumentRoot /var/www/myapp/public

      <Directory /var/www/myapp/public>

         # This relaxes Apache security settings.

         AllowOverride all

         # MultiViews must be turned off.

         Options -MultiViews

      </Directory>

   </VirtualHost>

[Ed Bruner]

I should note: that the db account works via commandline and is configured in database.yml.  I've seen ppl indicate that this is an issue with pg_hba.conf...but if that were my problem then the application wouldn't work in standalone either...but it does.