Install Redmine

Package versions:

Ruby 2.3.3
Rails 4.2.*
MySql 5.5
Apache2

Steps:

1. Install prerequisite from apt
   sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev nodejs libmagickwand-dev libmysqlclient-dev libapr1-dev libaprutil1-dev bison libgdbm-dev

2. Install apache2, mysql
   sudo apt-get install apache2 mysql-server-5.5 apache2-dev
3. Prepare database
   CREATE DATABASE redmine CHARACTER SET utf8;
CREATE USER 'redmine'@'localhost' IDENTIFIED BY 'my_password';
GRANT ALL PRIVILEGES ON redmine.* TO 'redmine'@'localhost';
FLUSH PRIVILEGES;
4. Install ruby 2.3.3 from source
   wget https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.3.tar.gz
tar -zxvf ruby-2.3.3.tar.gz
cd ruby-2.3.3
./configure
make
sudo make install
ruby -v
5. Install rails 4.2.*
   curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
sudo apt-get install -y nodejs
sudo gem install rails -v 4.2.7.1
6. Install bundler
   gem install bundler
7. Install red mine 3.3.2
   wget 'http://www.redmine.org/releases/redmine-3.3.2.tar.gz'
tar -zxvf redmine-3.3.2.tar.gz
sudo mv redmine-3.3.2 /usr/share/
sudo ln -s /usr/share/redmine-3.3.2 /usr/share/redmine
cd /usr/share/redmine
sudo cp config/database.yml.example config/database.yml
sudo nano config/database.yml
   change database settings
   bundle install --without development test postgresql sqlite
bundle exec rake generate_secret_token
RAILS_ENV=production bundle exec rake db:migrate
RAILS_ENV=production bundle exec rake redmine:load_default_data
sudo chown -R rogerlin:www-data files log tmp public/plugin_assets
sudo chmod -R 755 files log tmp public/plugin_assets
8. Test your installation with Webrick
   bundle exec rails server webrick -e production
9. Install passenger
   sudo gem install passenger
sudo passenger-install-apache2-module
   Copy and paste the code generated from passenger into your Apache site configuration file(site.conf)
10. Configure site configurations
    Add the following code into your site configuration file and restart Apache service.
    PassengerAppRoot /usr/share/redmine
RailsBaseURI /redmine
Alias /redmine /usr/share/redmine/public