Putting the dev back into devops

class: center, middle
# Put the dev back into devops

### a cheap and easy guide to getting your changes into production

### Jon Johnson
![Jon's avatar](http://0.gravatar.com/avatar/081b2280f004322ad0e2e17062557f7c)

jrjohnson 
jrjohnson_

---
# Who am I?

- Full stack web developer
- Technical lead for the Ilios Project open source curriculum management system
for health science education. (http://iliosproject.org)
- Ardently lazy about repeating tasks

.center[![github contributions](media/contributions.png)]

---
# Lets GIT cracking
- What is git and why does it play such a critical role?
- Distributed version control primer
- client vs server
- Git for humans (https://abookapart.com/products/git-for-humans)

---
# Everything lives in the `.git` directory

.center[DEMO TIME!]
.center[![Rollar Coaster Demolotiion](media/demo.gif)]

.footnote[http://giphy.com/gifs/demo-rollercoaster-wooden-r9CT85ZJah3Ik]

???

``` bash
cd ~/Desktop/gitdemo
git init
echo "Please Read me" > README
git add README
git commit
```

Open in finder and look at the file

``` bash
git checkout -b edit-readme
echo "Please Do NOT Read me" >> README
git commit -a -m 'Better readme'
```

Open in finder and look at the file

``` bash
git checkout -b delete-readme
git rm README
git commit -a -m 'Remove readme'
```

Switch between branches and look at the file in the finder

---
# Remotes and Forks and Branches, oh My!
- What to share and when / **Keep your crappy ideas private**

---
# Why Fork and Pull?
- Limited authority to make commits
- Everyone has their own playground
- Only master matters
- short lived branches

---
# Up to date forking
- Never touch your master branch
- `git pull --rebase upstream master`

.center[![example branches](media/branches.png)]

---
# Github FTW!
- The repository is **in the *cloud***
- Public / Private repositories
- Common tool makes onboarding easier

.center[![blues brothers celebration](media/blues_brothers.gif)]

---
# GitHub 2000:  Pull Requests
- Validate every change:
  - Unit tests
  - Code Style
  - Manual Validation
      - Checkout and review
      - Build and deploy the PR
- Discussion on small features, screen shots, etc.

.center[![All Checks Passed!](media/all-checks-passed.png)]

---
# What can the internets do for you?

.center[![Cats in a musical](media/lolcat-musical.jpg)]
.footnote[https://laughingsquid.com/i-can-has-cheezburger-the-musiclol/]

---
# What can the internets do for you?
- Github
- Travis
- Saucelabs (test in ALL THE BROWSERS)
- Code Climate (code quality)
- Coveralls (test coverage)
- Heroku (deploy PRs for testing)

---
# Travis for Continuous Integration
- Free for open source
- Configurable virtual testing dashboard
-

---
# AWS for continous delivery
- S3 bucket stores files
- Cloudfront serves assets
- S3 stores a JSON description of index

```json
{
  link: [
    {
      rel: "stylesheet",
      href: "https://d26vzvixg52o0d.cloudfront.net/assets/vendor-fda2f842da2dc4fa03daaa1bd5411c9e.css"
    },
    {
      rel: "stylesheet",
      href: "https://d26vzvixg52o0d.cloudfront.net/assets/ilios-ce71609f3b7baec15ff33a847fbe8f66.css"
    }
  ],
  script: [
    {
      src: "https://d26vzvixg52o0d.cloudfront.net/assets/vendor-9c5092b47123cf8fa27e436e8e8fc608.js"
    },
    {
      src: "https://d26vzvixg52o0d.cloudfront.net/assets/ilios-ca247ee9a3b36d2dce3689bc7edcab77.js"
    },
  ]
}
```

---
class: center, middle

### Questions?
![Jon's avatar](http://0.gravatar.com/avatar/081b2280f004322ad0e2e17062557f7c)

Slides at: https://jrjohnson.dev/talks/2016-04-devops-process.html

jrjohnson 
jrjohnson_