Running Redmine with a Ruby Selector involves configuring your web server (like Apache or Nginx) to use a specific version of Ruby and then setting up Redmine to run using that version. Below are step-by-step instructions for setting up Redmine with a Ruby Selector:

1. Install Ruby and Rails:

• Make sure you have the desired version of Ruby installed on your server. You can use a Ruby Version Manager (like RVM or rbenv) or your server's native package manager to install Ruby.

• Install Rails using the command:

  php

• gem install rails -v <version>

2. Install Redmine:

• Download and install Redmine. You can follow the official installation guide provided by Redmine: Redmine Installation Guide

3. Set Up Database:

• Configure a database (like MySQL or PostgreSQL) for Redmine. Follow the database setup instructions provided by Redmine.

4. Configure Web Server:

• Assuming you have a Ruby Selector set up on your server, you'll need to configure your web server (Apache or Nginx) to use the specific Ruby version you've installed.

For Apache:

• Edit your Apache configuration file to specify the Ruby version. For example, with Passenger, you might have something like:

  bash

• PassengerRuby /path/to/your/ruby

• Restart Apache after making this change.

For Nginx with Passenger:

• Modify your Nginx configuration to include a passenger_ruby directive:

  bash

• passenger_ruby /path/to/your/ruby;

• Restart Nginx after making this change.

5. Configure Redmine:

• Navigate to the Redmine installation directory and find the config/database.yml file. Update it with the appropriate database credentials.

• Generate a secret token using the command:

   

• rake generate_secret_token

• Migrate the database: