This is a combination of all my instructions on how to setup redmine on Centos. Its still a work in progress so please note any problems in comments.
Install Ruby on Rails
yum install ruby ruby-devel ruby-libs ruby-irb ruby-rdoc ruby-mysql
Download and install ruby gems
tar xvf rubygems-1.3.1.tgz
. . . → Read More: How To Install Redmine on Centos 5.2 Update
From – http://bitsandchaos.wordpress.com/2007/11/18/integrate-mongrel-with-rhel-and-derivatives/
This is tailored for the redmine installation that is descibed on this site.
create a directory
create a file in that directory
Put this into the file
# we want three instances, listening on ports 8000, 8001 and 8002
PORTS=”8000 8001 8002″
# the Rails environment . . . → Read More: Set up Mongrel as a service and start it automatically on Centos 5.2