Foreman - Process manager for applications with multiple components

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Splitting an app up in different processes is great for performance and scalability. The downside, however, is that it becomes much more complicated to get the app and all of its parts running. Foreman is an attempt to make this easier. Using foreman you can declare the various processes that are needed to run your application using a Procfile.

Technology

FOREMAN
Process manager for applications with multiple components

by Stoyan Zhekov

XMPP Bot Web Frontend
(Blather) (Rails)

TWT Stream
(Event Machine)

XMPP Bot Web Frontend
(Blather) (Rails)

TWT Stream API
(Event Machine) (Sinatra)

XMPP Bot Web Frontend
(Blather) (Rails)

TWT Stream API
(Event Machine) (Sinatra)

BGND Jobs
(Resque)

XMPP Bot Web Frontend
(Blather) (Rails)

TWT Stream API
(Event Machine) (Sinatra)

BGND Jobs Cronjobs
(Resque) (Clockwork)

HOW TO START THEM?

• rails: rails server thin -p $PORT

HOW TO START THEM?

• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production

HOW TO START THEM?

• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D

HOW TO START THEM?

• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D
• cron: clockwork clock.rb

HOW TO START THEM?

• rails: rails server thin -p $PORT
• api: rackup -s thin -p $PORT -E production
• bot: ruby jabber_bot.rb -D
• cron: clockwork clock.rb
• jobs: QUEUE=* rake resque:work

HOW TO START THEM?

• rails: bundle exec rails server thin -p $PORT

• api: bundle exec rackup -s thin -p $PORT

• bot: bundle exec ruby jabber_bot.rb -D

• cron: bundle exec clockwork clock.rb

• jobs: QUEUE=* bundle exec rake resque:work

PROCFILE

rails: bundle exec rails server thin -p $PORT
api: bundle exec rackup -s thin -p $PORT
bot: bundle exec ruby jabber_bot.rb -D
cron: bundle exec clockwork clock.rb
jobs: QUEUE=* bundle exec rake resque:work

NOT ONLY RUBY

node: node web.js
clojure: lein run -m
...

DOES IT SCALE?

foreman start
-c web=5,job=2

OS INTEGRATION

$ sudo foreman export upstart /etc/init -a myapp

[foreman export] writing: /etc/init/myapp.conf
[foreman export] writing: /etc/init/myapp-web.conf
[foreman export] writing: /etc/init/myapp-web-1.conf

$ sudo start myapp

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Foreman - Process manager for applications with multiple components

1. FOREMAN Process manager for applications with multiple components by Stoyan Zhekov

2. *file quiz

3. Rakeﬁle

4. Rake

5. Gemﬁle

6. Bundler

7. Procﬁle

8. ?

9. Foreman

10. MATZ HEROKU

11. HEROKU + FOREMAN

12. Foreman

13.

14. PROBLEM ?

15. Too complicated applications

16. XMPP Bot (Blather)

17. XMPP Bot Web Frontend (Blather) (Rails)

18. XMPP Bot Web Frontend (Blather) (Rails) TWT Stream (Event Machine)

19. XMPP Bot Web Frontend (Blather) (Rails) TWT Stream API (Event Machine) (Sinatra)

20. XMPP Bot Web Frontend (Blather) (Rails) TWT Stream API (Event Machine) (Sinatra) BGND Jobs (Resque)

21. XMPP Bot Web Frontend (Blather) (Rails) TWT Stream API (Event Machine) (Sinatra) BGND Jobs Cronjobs (Resque) (Clockwork)

22. HOW TO START THEM? • rails: rails server thin -p $PORT

23. HOW TO START THEM? • rails: rails server thin -p $PORT • api: rackup -s thin -p $PORT -E production

24. HOW TO START THEM? • rails: rails server thin -p $PORT • api: rackup -s thin -p $PORT -E production • bot: ruby jabber_bot.rb -D

25. HOW TO START THEM? • rails: rails server thin -p $PORT • api: rackup -s thin -p $PORT -E production • bot: ruby jabber_bot.rb -D • cron: clockwork clock.rb

26. HOW TO START THEM? • rails: rails server thin -p $PORT • api: rackup -s thin -p $PORT -E production • bot: ruby jabber_bot.rb -D • cron: clockwork clock.rb • jobs: QUEUE=* rake resque:work

27. HOW TO START THEM? • rails: bundle exec rails server thin -p $PORT • api: bundle exec rackup -s thin -p $PORT • bot: bundle exec ruby jabber_bot.rb -D • cron: bundle exec clockwork clock.rb • jobs: QUEUE=* bundle exec rake resque:work

28. Nightmare !

29. Foreman

30. PROCFILE rails: bundle exec rails server thin -p $PORT api: bundle exec rackup -s thin -p $PORT bot: bundle exec ruby jabber_bot.rb -D cron: bundle exec clockwork clock.rb jobs: QUEUE=* bundle exec rake resque:work

31. foreman start

32.

33. IT JUST WORKS!

34. NOT ONLY RUBY node: node web.js clojure: lein run -m ...

35. DOES IT SCALE? foreman start -c web=5,job=2

36. OS INTEGRATION $ sudo foreman export upstart /etc/init -a myapp [foreman export] writing: /etc/init/myapp.conf [foreman export] writing: /etc/init/myapp-web.conf [foreman export] writing: /etc/init/myapp-web-1.conf $ sudo start myapp

37.

38.

39. Thank you!

Foreman - Process manager for applications with multiple components

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