DevOps Foundations: Your First Project

Course details

Curious about how to put DevOps principles into practice? This course can help. Join instructor and DevOps expert Carlos Nunez as he demonstrates how to apply DevOps principles to a sample app for a fictitious travel booking company. Throughout the course, Carlos shows you how to leverage popular tools and methodologies to make updating, testing, and releasing the app a breeze. After explaining how to containerize the website with Docker and Docker Compose, he shows how to write unit and integration tests with RSpec, Capybara, and Selenium. He then guides you through the process of deploying your website to the cloud with OpenTofu and using GitLab CI, GitLab's built-in CI/CD service that can build, test, and deploy your app. Upon completing this course, you'll know how to turn a slow and complex application development process into a fast and enjoyable one.

Concepts

Introduction

Your first project, DevOps-ified
What you should know
Configuring AWS

The Project The Mission

So what is this DevOps thing anyway
Your application, pre-DevOps
Your application, post-DevOps

Testing Locally with Docker

Bring production to your laptop with Docker
Installing Docker
Writing your first Dockerfile
Writing your first Docker Compose manifest

Getting Started with Git

Version control - The secret weapon of DevOps
Installing Git
Initializing your first Git repository
Getting familiar with the Git workflow

Collaborative Version Control

Beyond local repositories
Introducing GitLab
Creating the GitLab Docker Compose service
Starting the GitLab Compose service
Creating our first GitLab project
Connecting Git to GitLab

Testing Your App with RSpec, Capybara, and Selenium

Test often, ship often
Setting up your test
Viewing our test harness in Docker Compose
Updating the Dockerfile
Running the test
Finding criteria for a unit test
Writing the unit test
Setting up Selenium
Running your test with Selenium

Infrastructure as Code with OpenTofu

Deploy with confidence with infrastructure as code
Finding the version of OpenTofu to use
Adding OpenTofu to Docker Compose
AWS deployment explained
Writing your integration test
Writing OpenTofu code
Reviewing the OpenTofu plan
Applying the OpenTofu plan
Running your integration test
Destroying the website from AWS S3

CI CD as Code

Shipping fast with CI CD
Introducing GitLab CI
Writing our first Gitlab CI workflow
Configuring sensitive variables
Creating our first Gitlab CI runner
Putting it all together
Challenge - Change the website title
Solution - Change the website title

Conclusion

Next steps