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[SOUND] In previous workshops
we manually deployed

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our Rails app to a production environment.

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We cloned Git repo with our Rails app
to a server, created the database,

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set up configuration for
Nginx in Unicorn, and more.

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For every additional server we set up,
we're going to need to repeat those steps.

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And every time we release
a new app version,

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we'll need to pull changes from Git and
restart our server.

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If we do all this manually, over time
the potential for mistakes adds up.

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So, in this course, we're going to show
you how to do all this automatically

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using the Rails community's most popular
deployment framework, Capistrano.

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Capistrano can make your deployments fast,
easy, and safe.

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This guide covers Capistrano
3 which was released in 2013.

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It has several incompatibilities
with Capistrano 2 and earlier.

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So, when you're searching the web for
troubleshooting tips you should double

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check any source written before 2013,
as the info may be outdated.

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Also, be aware that Capistrano scripts
often have to be highly customized for

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the environment they're deploying to.

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We're deploying to a completely fresh
Ubuntu server using RPM, PostgreSQL,

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and Nginx.

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If you are set up different from this
in any way, you're almost certainly

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going to have to make some changes
to the Capistrano code shown here.

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Be sure to check the teacher's notes for
troubleshooting help and

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try pasting any error messages
you get into a search engine.

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Today, we'll be giving you
an introduction to Capistrano.

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But in the end,

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you'll have a little bit of work to do in
order to get it going with your setup.

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Okay, ready?

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Let's take Capistrano for a spin.