How to Install and Configure Redmine on Debian 9

Published on

5 min read

Install and Configure Redmine on Debian

Redmine is a free and open-source project management and issue tracking application. It is cross-platform and cross-database and built on top of the Ruby on Rails framework.

Redmine includes support for multiple projects, wikis, issue tracking system, forums, calendars, email notifications, and much more.

In this tutorial, we’ll show you how to install and configure the latest version of Redmine on a Debian 9 server using MySQL as a database back-end and Passenger + Nginx as a Ruby application server.


Make sure that you have met the following prerequisites before continuing with this tutorial:

Creating a MySQL database

Redmine supports MySQL/MariaDB, Microsoft SQL Server, SQLite 3 and PostgreSQL . We’ll use MariaDB as a database back-end. Make sure you have at least MySQL 5.7 or MariaDB 10.3 installed on your machine.

If MariaDB or MySQL is not installed on your Debian server you can install it using these instructions .

Start by logging in to the MySQL console by typing:

sudo mysql

Run the following SQL statement to create a new database :


Create a new MySQL user account and grant access to the database :

GRANT ALL ON redmine.* TO 'redmine'@'localhost' IDENTIFIED BY 'change-with-strong-password';
Do not forget to change change-with-strong-password with a strong password.

Once done, log out from the MariaDB console by typing:


Installing Ruby

The easiest way to install Ruby on Debian is by using the apt package manager:

Install Ruby by typing:

sudo apt install ruby-full

At the time of writing, the version in the Debian repositories is 2.3.3p222 which is supported by the latest version of Redmine.

If you want to install Ruby via Rbenv or RVM visit this tutorial .

Installing Passenger and Nginx

Passenger is a fast and lightweight web application server for Ruby, Node.js, and Python that can be integrated with Apache and Nginx. We will install Passenger as an Nginx module.

Make sure Nginx is installed before continuing with the following steps.

Installing the necessary packages to enable an https repository:

sudo apt install dirmngr gnupg apt-transport-https ca-certificates software-properties-common

Import the repository GPG key and enable the Phusionpassenger repository:

sudo apt-key adv --recv-keys --keyserver hkp:// 561F9B9CAC40B2F7sudo add-apt-repository 'deb stretch main'

Update the packages list and install the Passenger Nginx module with:

sudo apt updatesudo apt install libnginx-mod-http-passenger

Installing Redmine on Debian

Start by installing the dependencies necessary to build Redmine:

sudo apt install build-essential libmariadbclient-dev imagemagick libmagickwand-dev curl ruby-dev libxslt-dev libxml2-dev zlib1g-dev

At the time of writing this article, the latest stable version of Redmine is version 4.0.4.

Before continuing with the next step you should check the Redmine download page to for a newer version.

1. Downloading Redmine

Download the Redmine archive using the following curl command :

sudo curl -L -o /tmp/redmine.tar.gz

Once the download is completed extract the archive and move it to the /opt directory:

cd /tmpsudo tar zxf /tmp/redmine.tar.gzsudo mv /tmp/redmine-4.0.4 /opt/redmine

2. Configuring Redmine Database

Copy the Redmine example configuration file:

sudo cp /opt/redmine/config/database.yml.example /opt/redmine/config/database.yml

Open the file with your text editor:

sudo nano /opt/redmine/config/database.yml

Search for the production section and enter the MySQL database and user information we created previously:

  adapter: mysql2
  database: redmine
  host: localhost
  username: redmine
  password: "change-with-strong-password"
  encoding: utf8

Once done, save the file and exit the editor.

3. Installing Ruby dependencies

Navigate to the redmine directory and install bundler and other Ruby dependencies:

cd /opt/redmine/sudo gem install bundler --no-rdoc --no-ri sudo bundle install --without development test postgresql sqlite

4. Generate Keys and Migrate the Database

Run the following command to generate keys and migrate the database:

cd /opt/redmine/sudo bundle exec rake generate_secret_tokensudo RAILS_ENV=production bundle exec rake db:migrate

5. Set the correct Permissions

Nginx runs as www-data user and group. Set the correct permissions by issuing following chown command :

sudo chown -R www-data: /opt/redmine/

Configure Nginx

By now, you should already have Nginx with SSL certificate installed on your system, if not check the prerequisites for this tutorial.

Open your text editor and create the following Nginx server block file:

sudo nano /etc/nginx/sites-available/
# Redirect HTTP -> HTTPS
server {
    listen 80;

    include snippets/letsencrypt.conf;
    return 301$request_uri;

# Redirect WWW -> NON WWW
server {
    listen 443 ssl http2;

    ssl_certificate /etc/letsencrypt/live/;
    ssl_certificate_key /etc/letsencrypt/live/;
    ssl_trusted_certificate /etc/letsencrypt/live/;
    include snippets/ssl.conf;

    return 301$request_uri;

server {
    listen 443 ssl http2;

    root /opt/redmine/public;

    # SSL parameters
    ssl_certificate /etc/letsencrypt/live/;
    ssl_certificate_key /etc/letsencrypt/live/;
    ssl_trusted_certificate /etc/letsencrypt/live/;
    include snippets/ssl.conf;
    include snippets/letsencrypt.conf;

    # log files
    access_log /var/log/nginx/;
    error_log /var/log/nginx/;

    passenger_enabled on;
    passenger_min_instances 1;
    client_max_body_size 10m;
Don’t forget to replace with your Redmine domain and set the correct path to the SSL certificate files. All the HTTP requests will be redirected to HTTPS . The snippets used in this configuration are created in this guide .

Enable the server block by creating a symbolic link to the sites-enabled directory:

sudo ln -s /etc/nginx/sites-available/ /etc/nginx/sites-enabled/

Before restarting the Nginx service make a test to be sure that there are no syntax errors:

sudo nginx -t

If there are no errors the output should look like this:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Finally, restart the Nginx service by typing:

sudo systemctl restart nginx

Accessing Redmine

Open your browser , type your domain and assuming the installation is successful, a screen similar to the following will appear:

redmine login

The default login credentials for Redmine are:

  • Username: admin
  • Password: admin

When you log in for the first time, you will be prompted to change the password as shown below:

redmine change password

Once you change the password you will be redirected to the user account page.


You have successfully installed Redmine on your Debian system. You should now check the Redmine Documentation and learn more about how to configure and use Redmine.

If you hit a problem or have feedback, leave a comment below.