About Deploying and Process Management for Slimane

2016 Jun 27 Tokyo server side swift meetup

Transcript

1. Y U K I TA K E I A b o u t D e p l o y i n g a n d P ro c e s s M a n a g e m e n t f o r S l i m a n e 2 0 1 6 J U N 2 7 T O K Y O S E R V E R S I D E S W I F T M E E T U P
2. Hello! I’m Yuki Takei
5. • 100% asynchronous(built over libuv) • Express(Node.js) inspired • Stand Alone HTTP Server • Moduler • Faster • Adopts Open-Swift • Supports Multiprocess Environment Slimane is a Web Framework/HTTP Server for Swift3
6. • Routing/Middleware • Session • JSON • Hash Functions • Redis • WebSocket • View/Template Engine • Promise • Future Available functionalities(Modules) And more…. https://github.com/slimane-swift
7. S w i f t y - L i b u v S U V S K E LT O N S L I M A N E Layer of Slimane OS App libuvͷSwiftόΠϯσΟϯά ඇಉظωοτϫʔΫϓϥοτϑΥʔϜ TCPɺUDPɺProcessɺ FIleSystemɺDNS etc… SuvϕʔεͷHTTPαʔόʔ HTTPϓϩτίϧͷύʔζ ΞϓϦέʔγϣϯϑϨʔϜϫʔΫ system callɺevent loop
8. Today I’ll show you a first step of deploying and process management for Slimane
9. Anyways
10. How do you deploy your application?
11. How do you restart your application?
12. • Blue Green Deployment • Cloud Services provided • Capistrano(with SCM) • Rsync There are some major deploying ways
13. Blue Green Deployment (Immutable infrastructure)
14. Blue Green Deployment (Immutable infrastructure) No Down Time!
15. Cloud Service Provided
16. Cloud Service Provided No Down Time!(Probably..)
17. Capistrano or rsync access distribute changes
18. Capistrano or rsync access distribute changes Have to restart
19. Capistrano or rsync access distribute changes Has Down Time!
20. There should not be down time on our services
21. So we have to choose Blue Green Deployment or Cloud services provided one?
22. We Should!
23. But.. wait
24. It’s not necessarily for all projects.
25. Should depends on the project size, money, people and phase
26. Well, what should we do?
27. Graceful Restart
28. access master process child processes(fork) distribute changes What is Graceful Restart?
29. access master process folk new children (old processes) kill gradually What is Graceful Restart?
30. access master process folk new children (old processes) kill gradually What is Graceful Restart?
31. access master process folk new children kill gradually No Down Time! What is Graceful Restart?
32. • Nginx • Apache • Unicorn(Rack HTTP Server) • PM2(Node.js) Major Servers/Tools that supports `Graceful Restart`
33. How about Slimane(Swift)?
35. • Use via Command line interface • Controllable by signals • Observing workers(like a supervisor) • Can take cpu/memory usage from each workers • Will merge to Skelton partially (it means Skelton’ll become like a Unicorn) PMS is a process manger for apps that are built over Skelton
36. (But super early…)
37. Demo
38. • USR2 (Gracefully restart all workers) • USR1 (Reopen log files) • TTIN (Increase a worker process) • TTOU (Decrease a worker process) • INT/TERM(exit immediately) Supported signals(2016-06-27)
39. Thanks!