[SOUND] In previous workshops we manually deployed

our Rails app to a production environment.

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

set up configuration for Nginx in Unicorn, and more.

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

And every time we release a new app version,

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

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

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

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

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

This guide covers Capistrano 3 which was released in 2013.

It has several incompatibilities with Capistrano 2 and earlier.

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

check any source written before 2013, as the info may be outdated.

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

the environment they're deploying to.

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

and Nginx.

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

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

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

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

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

But in the end,

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

Okay, ready?

Let's take Capistrano for a spin.