SCF Rails example application

This is an example of a RubyOnRails application which you can deploy on SUSE Cloudfoundry using the following steps.

Deploy

1. Create a database service. It can be PostgreSQL or MySQL but has to be named scf-rails-example-db to match the value in the manifest.yml file.

   It will be a command like this: cf create-service service_name the_desired_package scf-rails-example-db

   Find out what you services you have available by running cf marketplace.

2. Make sure you have the appropriate gem in your Gemfile and Gemfile.lock in order to connect to the database.

   Usually mysql2 and pg are the 2 options. Try using an IP address as the host mysql2 gem in case it tries to connect using a socket.

3. Run cf push from withing the root for this repository.

Seed data

If you want to see some seed data in the front page, run the following:

cf push -c 'rake db:seed' -i 1

and then again:

cf push

to do a normal deploy.

Seed data, manual trigger with one push:

Alternatively, you may do a normal cf push, and then run the following (admittedly unwieldy) command:

cf ssh scf-rails-example -c "export PATH=/home/vcap/deps/0/bin:/usr/local/bin:/usr/bin:/bin && export BUNDLE_PATH=/home/vcap/deps/0/vendor_bundle/ruby/2.5.0 && export BUNDLE_GEMFILE=/home/vcap/app/Gemfile && cd app && bundle exec rake db:seed"

This triggers the seed task while the app is already running, without needing to restage/restart.

Useful links

• https://docs.cloudfoundry.org/devguide/services/migrate-db.html
• https://github.com/suse/scf