Update: I recommend to just run the Redmine Docker image instead of doing all this stuff I've written time ago.

$ docker run -d --name some-redmine redmine

Check out this link too: https://hub.docker.com/_/redmine/

The old method

1. Install Apache

$ apt-get install apache2

2. Install rmagick & nokigiri dependencies

$ apt-get install -y build-essential imagemagick libmagickcore-dev libmagickwand-dev libxml2 libxml2-dev libxslt1-dev

3. Install MySQL

$ apt-get update $ apt-get install -y mysql-client-core-5.5 mysql-server mysql-client libmysqlclient-dev // enter your top-secret-password

4. Restart MySQL

$ /etc/init.d/mysql stop $ /etc/init.d/mysql start $ /usr/bin/mysqld_safe --user=mysql --skip-grant-tables

5. Download Redmine

curl -O http://www.redmine.org/releases/redmine-2.3.4.zip unzip redmine-2.3.4.zip

6. Change database configuration

$ cp /config/database.yml.example /config/database.yml $ vim /config/database.yml // user: redmine // pass: redminepassword

7. Install RVM + Ruby

$ curl -L https://get.rvm.io | bash -s stable // logout or source here $ rvm install 2.1.0 --autolibs=enabled && rvm --fuzzy alias create default 2.1.0

8. Install Pusion Passenger

Install Pussion Passenger + Apache mod

$ apt-get install -y libcurl4-openssl-dev apache2-threaded-dev libapr1-dev libaprutil1-dev $ gem install passenger $ passenger-install-apache2-module
Add the following lines to /etc/apache2/mods-available/passenger.load:

LoadModule passenger_module /usr/local/rvm/gems/ruby-2.1.0/gems/passenger-4.0.36/buildout/apache2/mod_passenger.so
Add the following lines to /etc/apache2/mods-available/passenger.conf:

        <IfModule mod_passenger.c>
          PassengerRoot /usr/local/rvm/gems/ruby-2.1.0/gems/passenger-4.0.36
          PassengerDefaultRuby /usr/local/rvm/gems/ruby-2.1.0/wrappers/ruby
        </IfModule>

Enable Passenger as Apache module:

sudo a2enmod passenger
Add a virtual host to your Apache configuration file and set its DocumentRoot to /var/sites/redmine.domain.com/public:

        <VirtualHost *:80>
           ServerName redmine.domain.com
           DocumentRoot /var/sites/redmine.domain.com/public
           <Directory /var/sites/redmine.domain.com/public>
              Require all granted
              Options FollowSymLinks
              AllowOverride none
              Order allow,deny
              Allow from all
              PassengerUser root
           </Directory>
        </VirtualHost>

8. Enable Apache site

$ sudo a2ensite redmine

9. Install dependencies

$ gem install bundler

10. Install Redmine dependencies

$ bundle install

11. Session store secret generation

This step generates a random key used by Rails to encode cookies storing session data thus preventing their tampering.

$ rake generate_secret_token

12. Database schema objects creation

Create the database structure

$ RAILS_ENV=production rake db:migrate

13. File system permissions

The user account running the application must have write permission on the following subdirectories:

files (storage of attachments)
log (application log file production.log)
tmp and tmp/pdf (create these ones if not present, used to generate PDF documents among other things)
public/plugin_assets (assets of plugins).

$ mkdir -p tmp tmp/pdf public/plugin_assets $ sudo chown -R nobody:nogroup files log tmp public/plugin_assets $ sudo chmod -R 755 files log tmp public/plugin_assets

14. Email configuration (gmail)

$ cp config/configuration.yml.example config/configuration.yml $ vim config/configuration.yml

Edit configuration.yml

production: email_delivery: delivery_method: :smtp smtp_settings: enable_starttls_auto: true address: "smtp.gmail.com" port: '587' domain: "smtp.gmail.com" authentication: :plain user_name: "redmine.domain@gmail.com" password: "secret"

15. Theme (optional)

$ cd public/themes/ $ curl -O http://www.redminecrm.com/license_manager/9722/circle_theme-1_0_1.zip $ unzip circle_theme-1_0_1.zip

16. Test Redmine

$ ruby script/rails server webrick -e production

Note: Webrick is not suitable for production use, please only use webrick for testing that the installation up to this point is functional.

Fatto!

@singuerinc

Step by step Redmine installation