Catalyst

To run apps based on the Catalyst 5.9+ framework using Unit:

1. Install Unit with a Perl language module.

2. Install Catalyst’s core files.

3. Create a Catalyst app. Here, let’s store it at /path/to/app/:

   $ cd /path/to/   # Path where the application directory will be created; use a real path in your configuration
   

   $ catalyst.pl app  # Arbitrary app name; becomes the application directory name
   

   $ cd app
   

   $ perl Makefile.PL
   

   Make sure the app’s .psgi file includes the lib/ directory:

   use lib 'lib';
   use app;
   

4. Change ownership:

   Run the following command (as root) so Unit can access the application directory (If the application uses several directories, run the command for each one):

   # chown -R unit:unit /path/to/app/  # User and group that Unit's router runs as by default
      

   Note:
   The unit:unit user-group pair is available only with official packages , Docker images, and some third-party repos. Otherwise, account names may differ; run the ps aux | grep unitd command to be sure.

   For further details, including permissions, see the security checklist.

5. Next, prepare the Catalyst configuration for Unit (use real values for script and working_directory):

   {
      "listeners": {
         "*:80": {
               "pass": "applications/catalyst"
         }
      },
   
      "applications": {
         "catalyst": {
               "type": "perl",
               "working_directory": "/path/to/app/",
               "_comment_working_directory": "Needed to use modules from the local lib directory; use a real path in your configuration",
               "script": "/path/to/app/app.psgi",
               "_comment_script": "Path to the application directory; use a real path in your configuration"
         }
      }
   }
   

6. Upload the updated configuration.

   Assuming the JSON above was added to config.json. Run the following command as root:

   # curl -X PUT --data-binary @config.json --unix-socket \
         /path/to/control.unit.sock \  # Path to Unit's control socket in your installation
         http://localhost/config/      # Path to the config section in Unit's control API
      

   Note:
   The control socket path may vary; run unitd -h or see Startup and shutdown for details.

   After a successful update, your app should be available on the listener’s IP address and port: