This post just saved me a hours of work, thanks 
http://www.d-man.org/news/2009/01/06/91/
It outlines how to remove an old version of ruby and install the version you need.
Install Ruby on Rails – Use http://www.how-to-linux.com/2008/12/how-to-install-ruby-on-rails-on-centos-52/
Create a database for Tracks
mysql -u root -p
create database tracks;
exit
Download Tracks from http://bsag.bingodisk.com/public/files/tracks-current.zip
Unzip the Tracks archive
unzip tracks-current.zip
Put tracks into /opt
mv tracks-1.7 /opt
Edit /opt/tracks-1.7/config/database.yml
vi /opt/tracks-1.7/config/database.yml
Add you mysql server details
production:
adapter: mysql
database: tracks
hosts: localhost
username: root
password: neveruserrootpassword
Change a config in site.yml
vi /opt/tracks-1.7/config/site.yml
Add something unique in the salt parameter.
Add the Tracks data to the database
rake db:migrate RAILS_ENV=production
If you get this error;
no such file to load — mysql
Download ruby-mysql – http://rubyforge.org/frs/?group_id=4550
tar mysql-ruby-2.7.tar.gz
cd mysql-ruby-2.7
ruby extconf.rb –with-mysql-config
make
make install
Now run the server
script/server -e production
Goto http://localhost:3000
Read more here – http://developers.slashdot.org/article.pl?sid=09%2F01%2F31%2F230216
See instructions on how to install Ruby on Rails – http://www.how-to-linux.com/2008/12/how-to-install-ruby-on-rails-on-centos-52/
go to /opt
cd /opt
download the source http://rubyforge.org/frs/?group_id=1850
wget http://rubyforge.org/frs/download.php/39478/redmine-0.7.3.zip
unzip redmine-0.7.3.zip
Create a Database for Redmine
(install mysql if nececssary – see http://www.how-to-linux.com/2008/12/install-mysql-server-on-centos-52/)
mysql -u root -p
create database redmine character set utf8;
exit
Configure the Redmine database connection settings
Copy config/database.yml.example to config/database.yml and edit this file in order to configure your database settings for “production” environment.
cp /opt/redmine-0.7.3/config/database.yml.example /opt/redmine-0.7.3/config/database.yml
edit database.yml
production:
adapter: mysql
database: redmine
host: localhost
username: yourusername
password: yourpassword
socket: /var/lib/mysql/mysql.sock
Run the following command in /opt/redmine-0.7.3/
rake db:migrate RAILS_ENV=”production”
If you get this error message: “cannot connect to mysql: No such file or directory – /tmp/mysql.sock”, You forgot to specify the socket location in config/database.yml – see above.
This will create tables and an administrator account.
Run this command to load default data into db.
rake redmine:load_default_data RAILS_ENV=”production”
Test the installation by running WEBrick web server:
ruby script/server -e production
Once WEBrick has started, point your browser to http://localhost:3000/. You should now see the application welcome page.
Use default administrator account to log in:
login: admin
password: admin
You can go to Admin & Settings to modify application settings.
You probably will want to install Rmagick as well for the nice Gant charts.
yum install ImageMagick
yum install ImageMagick-devel
gem install rmagick –v 1.15.13 ––no–rdoc ––no–ri
You must install the rmagick -v 1.15.13
Subversion integration, see
and
Add rubyworks repo in /etc/yum.repos.d/.
vi /etc/yum.repos.d/rubyworks.repo
And insert this text;
# Link file for RubyWorks yum repository
# Place this file in /etc/yum.repos.d[rubyworks]
name=RubyWorks
baseurl=http://rubyworks.rubyforge.org/redhat/$releasever/RPMS/$basearch
enabled=1
gpgcheck=1
gpgkey=http://rubyworks.rubyforge.org/RubyWorks.GPG.key
priority=1
Install Ruby on Rails 2.2.2 on Centos 5.2
yum install ruby ruby-devel ruby-libs ruby-irb ruby-rdoc ruby-mysql
Download and install ruby gems
wget http://rubyforge.org/frs/download.php/45905/rubygems-1.3.1.tgz
tar xvf rubygems-1.3.1.tgz
cd rubygems-1.3.1
ruby setup.rb
Install Rails
gem install rails
