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Railsconf 2014 - Deploying Rails is Easier Thank It Looks

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talkingquickly

Introductory presentation on Deploying Rails Applications to your own servers using Chef and Capistrano 3

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Deploying Rails It’s easier than it looks ! Ben Dixon, @talkingquickly
@talkingquickly About Me • Rails Developer, author of “Reliably Deploying Rails Applications” • Teach people to make stuff with Ruby at MakeItWithCode.com • Make cool swim technology stuff with SwimIO helloswimio.com (swim watches, the speedo app etc)
@talkingquickly Overview • “git push heroku” is awesome • But “Server stuff” isn’t that scary • Once you know it, you can do cool stuff with it
@talkingquickly Terminology • “PaaS” = Platform as a service = something like Heroku • VPS = Virtual Private Server = A Linux Server in the “Cloud” = “Box”
@talkingquickly Behind the scenes • How does “rails server” become a production setup? • how to go from Rails S on dev machine to a production application?
@talkingquickly A Simple Configuration Web Server
 E.g. Nginx, Apache App Server E.g. Unicorn, Thin, Webrick Database Server VPS A Request
@talkingquickly The Web Server • Nginx/ Apache • First point of contact when a request comes in • If it’s for a static file (like a picture) then deals with it directly • If it’s for part of our Rails app, sends it to the app server
@talkingquickly The App Server • When you run “rails server”, this is what you’re starting • E.g. Webrick, Thin, Unicorn • This is the “rails app” • The web server passes requests to this and it returns responses to the web server
@talkingquickly The Database Server • E.g. MySQL, PostgreSQL etc
@talkingquickly Recap Web Server
 E.g. Nginx, Apache App Server E.g. Unicorn, Thin, Webrick Database Server VPS A Request
@talkingquickly But Why? • More bang for your buck • Background Jobs you can have lots and lots of them • It makes working with a PaaS easier
@talkingquickly But Why? • Your infrastructure becomes another one of your tools for making cool stuff
@talkingquickly Don’t Do It Like I Did • Get a VPS, Google “How to Setup a Rails VPS” • Type in a lot of commands by hand
@talkingquickly Why Not? • When you need to setup another one, you’ll be back to square one
@talkingquickly How To Do it: Configuration Management • Automates the commands you would type in to setup a server • Once you’ve done it once, doing it again is trivial
@talkingquickly Configuration Management Example • 1m30 Video of setting up a server with chef
@talkingquickly How To Do it: Configuration Management • Configuration Management is “DRY” for setting up servers
@talkingquickly What about deployment? • But “git push heroku" is awesome!
@talkingquickly How To Do It: Deployment Automation • Automates the commands needed to copy a new version of your code to the server • You can still deploy with just one command e.g. “cap production deploy”
@talkingquickly Deployment Automation Example • 2m30 video of setting up and deploying with Capistrano
@talkingquickly What about when it breaks? • If something breaks, it should self heal as much as possible, if it can’t it should alert you • Use “Monitoring” tools e.g. Monit • Your configuration management is responsible for setting all this up
@talkingquickly First Stack • Suggested First Stack: • NGinx (Web Server) • Unicorn (App Server) • PostgreSQL (Database Server) • Monit (Monitoring)
@talkingquickly Toolbox • Chef Solo + Knife (Server Provisioning)
@talkingquickly Toolbox • Capistrano 3 (Deployment Automation)
@talkingquickly Next Steps • Get a VPS! (Digital Ocean, Linode) • 1GB + (512Mb Not Worth the Hassle)
@talkingquickly Next Steps • http://www.talkingquickly.co.uk/deploying_rails • More in depth, my book “Reliably Deploying Rails Applications” • Come and talk to me (@talkingquickly on twitter)
@talkingquickly Any Questions? • Ben Dixon // @talkingquickly • Resources: http://www.talkingquickly.co.uk/deploying_rails

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Railsconf 2014 - Deploying Rails is Easier Thank It Looks