I have been trying to get Phusion Passenger running on 5.6 for the last couple of days with no luck. Initially, I started with Ruby 1.9.2 under RVM since the default Ruby on RHEL-based distros is quite old. I got evrything installed OK but ran into some issues. Thinking it was RVM, I completely removed it along with the default Ruby and installed Ruby Enterprise Ed. 188.8.131.521-03 into /usr. I am still having the same issues.
When I try to Passenger with the default setup instructions provided by the installer, I get an error message saying "cannot find phusion_passenger/analytics_logger". I found very little info about this from Google but from what I can surmise it is a permissions error. Initially, I tried setting an ACL allowing user access for the apache user to the passenger root directory. Failing that, I tried chmod-ing the passeneger root to 777. Next I tried changing the context of the passenger root and its parent directory to "httpd_sys_content_t" as per section 6.3.5 of the user guide. Last, I tried setting SELinux to permissive. Nothing worked.
After reading through the user guide, I tried the following settings which resulted in a 500 ISE:
PassengerUserSwitching off PassengerUser apache PassengerGroup apache
Here is my passenger.conf file minus the above (from /etc/httpd/conf.d):
LoadModule passenger_module /usr/lib/ruby/gems/1.8/gems/passenger-3.0.7/ext/apache2/mod_passenger.so PassengerRoot /usr/lib/ruby/gems/1.8/gems/passenger-3.0.7 PassengerRuby /usr/bin/ruby .... PassengerLogLevel 3
This is the log output from the 500 error:
[ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/Pool.h:939 time=2011-04-30 13:12:17.351 ]: Spawning a process for /var/www/html because there are none for this app group
[ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/../SpawnManager.h:291 time=2011-04-30 13:12:17.352 ]: Spawning a new application process for /var/www/html... [ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/../SpawnManager.h:427 time=2011-04-30 13:12:17.352 ]: Spawn server died. Attempting to restart it... [ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/../SpawnManager.h:430 time=2011-04-30 13:12:17.357 ]: Restart seems to be successful. [ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/../SpawnManager.h:291 time=2011-04-30 13:12:17.359 ]: Spawning a new application process for /var/www/html... /usr/bin/ruby: error while loading shared libraries: libtcmalloc_minimal.so.0: cannot open shared object file: No such file or directory [ pid=17939 thr=1094539584 file=ext/common/ApplicationPool/Server.h:297 time=2011-04-30 13:12:17.365 ]: Client 9: SpawnException occured (no error page) [ pid=17951 thr=47853881642864 file=ext/apache2/Hooks.cpp:865 time=2011-04-30 13:12:17.366 ]: Unexpected error in mod_passenger: Cannot spawn application '/var/www/html': Could not read from the spawn server: Connection reset by peer (104) Backtrace: in 'virtual Passenger::SessionPtr Passenger::ApplicationPool::Client::get(const Passenger::PoolOptions&)' (Client.h:750) in 'Passenger::SessionPtr Hooks::getSession(const Passenger::PoolOptions&)' (Hooks.cpp:297) in 'int Hooks::handleRequest(request_rec*)' (Hooks.cpp:566)