OS - CENTOS 6.5 64-bit 

Please follow the instructions from the link below, except for ruby, rubygems, passenger and capistrano.

https://wiki.exphosted.com/doku.php/setup_an_app_server

If the same server is being used as db please install mysql and solr.

https://wiki.exphosted.com/doku.php/setup_db_server

https://wiki.exphosted.com/doku.php/qastageandproductiondeployment#installing_solr_tomcat_on_search_server

If the same server is being used for Chat please install juggernaut and node.

https://wiki.exphosted.com/doku.php/setup_other_roles#chat_role

Install memcache if it is not shared with any other server.

https://wiki.exphosted.com/doku.php/setup_other_roles#memcached_role

First , remove any existing ruby versions. On our app servers REE1.8.7 could have been installed. So, please remove them. If ruby was installed through the instructions mentioned above. All, you need to do is

sudo mv /opt/ruby-enterprise-1.8.7-2011.03 ruby-enterprise-1.8.7-2011.03_removed

Otherwise, please remove all the executables of ruby, gem, rake, irb, passenger and etc..

Make yourself root

su root

#update or install libyaml
yum insyall libyaml

#Install ruby
cd /opt
wget http://cache.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p550.tar.gz
tar xzvf ruby-1.9.3-p550.tar.gz
cd ruby-1.9.3-p550

./configure --prefix=/opt/ruby-1.9.3
make
make install

echo 'pathmunge /opt/ruby-1.9.3/bin' >> /etc/profile.d/crossbow.sh
logout

Now login and verify if ruby -v returns the correct version.

gem update --system 1.8.29

gem install passenger -v=4.0.44

Make changes to the apache config file. (Config file remains same as the one used for ruby 1.8.7 REE's passenger 3 but the following lines need to be modified.

#LoadModule passenger_module /opt/ruby-enterprise-1.8.7-2011.03/lib/ruby/gems/1.8/gems/passenger-3.0.9/ext/apache2/mod_passenger.so
LoadModule passenger_module /opt/ruby-1.9.3/lib/ruby/gems/1.9.1/gems/passenger-4.0.44/buildout/apache2/mod_passenger.so
LoadModule upload_progress_module modules/mod_upload_progress.so
<IfModule mod_passenger.c>
     PassengerRoot /opt/ruby-1.9.3/lib/ruby/gems/1.9.1/gems/passenger-4.0.44
     PassengerDefaultRuby /opt/ruby-1.9.3/bin/ruby
</IfModule>

#RailsFrameworkSpawnerIdleTime 0
PassengerMaxPreloaderIdleTime 0
#RailsAppSpawnerIdleTime 0 
PassengerMaxPreloaderIdleTime 0
### End Passenger tuning##
#RailsAutoDetect off

If the following gems are already installed, please uinstall them using “gem uninstall <gemname>” command and reinstall.

gem install bundler -v=1.6.2

gem install rack -v "1.5.2"

gem install god -v=0.13.3

gem install capistrano -v=2.15.4

gem install capistrano-ext -v=1.2.1

• For God - Change ruby path in /deplo/systasks/god.sh and /etc/init.d/god
• For Capistrano - Change ruby path in /home/expdev01/crossbow/config/deploy.rb and /home/expdev01/crossbow/runcap.sh

yum install libxml2 libxml2-devel (2.9.0-4)

bundle config build.nokogiri --use-system-libraries

gem install nokogiri -- --use-system-libraries -v='1.6.3.1'

bundle config build.RedCloth --with-cflags=-w

gem install RedCloth -v='4.2.9'

Change /deploy/crossbow/shared/config/database.yml “adapter” to mysql2 in all the needed stanzas.

Change /deploy/crossbow/shared/config/god/generic_monitoring.god to update the bundle paths to /opt/ruby-1.9.3/bin/bundle from /usr/local/bin/bundle

Please update the capistrano config files as needed. Refer the link below for more information.

https://wiki.exphosted.com/doku.php/qastageandproductiondeployment#deployment_steps

If you are using a fresh database for the current app setup, run the following task in the app directory

bundle exec rake db:seed RAILS_ENV=<environment>