Running redmine on apache2 with passenger

Question

I have installed redmine and its working properly on webrick. I am trying to run it on apache and have installed passenger and its apache module. When I try to run redmine on apache i get this error messge

Ruby on Rails application could not be started

Error message: Could not find RubyGem rack (~> 1.1.0)

I have rack 1.1.0 installed and the ruby 1.8.7

gem list shows this

actionmailer (2.3.14) actionpack (2.3.14) activerecord (2.3.14) activeresource (2.3.14) activesupport (2.3.14) bundler (1.0.21) daemon_controller (0.2.6) fastthread (1.0.7) json (1.6.5) mysql (2.8.1) passenger (3.0.11) rack (1.1.0) rails (2.3.14) rake (0.9.2) rdoc (3.12)

Answer 1

These gems might be installed for a specific user and the Apache user might not have access to that. In that case, be sure to install them globally, by doing a sudo gem install.....

It is also possible that you are using tools like rvm and have installed the gems into a specific gemset. See the rvm documentation if this is the case.