This time I use my blog as a notepad in case I need to reinstall redmine on Ubuntu again. Perhaps it’ll help also some people.

Go root
su

Install ruby gem
apt-get install rubygems

Since Ubuntu 8.10 uses 1.2 an redmine needs 1.3.1, upgrade gem:
gem install rubygems-update
/var/lib/gems/1.8/bin/update_rubygems

Install rails:
gem install rails -v=2.2.2

Install mysql:
apt-get install libmysqlclient15-dev ruby1.8-dev
gem install mysql

Install apache:
apt-get install apache2


Install passenger:
apt-get install build-essential libopenssl-ruby libapr1-dev apache2-prefork-dev
gem install passenger
passenger-install-apache2-module

Add the “LoadModule” line in /etc/apache2/mods-available/passenger.load
Add the 2 following line line in /etc/apache2/mods-available/passenger.conf

(optional)Install php5:
apt-get install php5

Restart apache:
/etc/init.d/apache2 restart

Ensuite suivez les instructions à partir de ‘installation’ sur le site redmine
Installation