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How to Boot Up Multiple Sinatra Applications at the Same Time with Foreman


Foreman is a process management gem for ruby applications. It is used in combination with a Procfile for configuration instructions.

A typical Procfile looks something like this

[name] : [script to execute]

Example Rack application Procfile

web: bundle exec rackup config.ru -p $PORT

If you're working with multiple Rack apps and they do not all live in the same directory the above won't work. Instead, you will have to use a new bash shell for each separate app.

# Procfile
app1:   sh -c 'cd path/to/app1 && bundle exec rackup config.ru -p $PORT'
app2:   sh -c 'cd path/to/app2 && bundle exec rackup config.ru -p $PORT'
app3:   sh -c 'cd path/to/app3 && bundle exec rackup config.ru -p $PORT'

Now all you have to do is run

foreman start
from the directory where the Procfile is located.

Tagged w/ #sinatra #ruby #rack #foreman #rubygems #shell #bash #application development