How to add or remove plugins to Redmine Project Management Software?

1. Download the plugin: You can either download the plugin from the Redmine plugin directory or from a third-party source.

   • https://www.redmine.org/plugins
   • https://github.com/haru/redmine_code_review/releases/tag/1.1.0

2. Install the plugin: Extract the Archive file and Place the plugin in the "plugins" directory of your Redmine installation. The path should look like "redmine_root/plugins/".

   • sudo cp -r redmine_code_review/ /opt/redmine/plugins

3. Restart Redmine: Restart the Redmine application and Apache web Server to ensure that it recognizes the new plugin.

    cd /opt/redmine/
    sudo rake redmine:plugins:migrate RAILS_ENV=production
    sudo sudo systemctl reload apache2
   

4. Activate the plugin: Log in to your Redmine application as an administrator, then go to the "Administration" section and click on "Plugins". Find the newly installed plugin and click on the "Configure" link to activate it.

5. Configure the plugin: Some plugins may require additional configuration. Check the plugin's documentation for more information.

6. If any error occurred during plugin migrate then remove it from plugin folder and run the following commands,

    sudo rm -rf /opt/redmine/redmine_code_review/
    sudo rake redmine:plugins:migrate RAILS_ENV=production
    sudo sudo systemctl reload apache2
   

Note: Before installing a plugin, make sure to check its compatibility with your Redmine version.