/etc/init/<file>.conf

myapp-web.conf

description "Myapp web application"

start on starting myapp
stop on stopping myapp

respawn

exec su - myapp -c 'cd /var/www/myapp/current/ && bundle exec unicorn -c ./config/unicorn.rb --env production >> /var/log/myapp/web.log 2>&1'

myapp-worker.conf

description "Myapp worker"

start on starting myapp
stop on stopping myapp

respawn

exec su - myapp -c 'cd /var/www/myapp/current/ && bundle exec sidekiq >> /var/log/myapp/worker.log 2>&1'

myapp.conf

description "Myapp web application"

start on runlevel [2345]
stop on runlevel [016]

pre-start script
  mkdir -p /var/log/myapp
  chown -R myapp. /var/log/myapp
  mkdir -p /var/run/myapp
  chown -R myapp. /var/run/myapp
end script