It's a really good project for establishing a foundation in DevOps. We learn what Kubernetes, ArgoCD, Vagrant, and others...
BUT, it's not just about the tools used, but also the DevOps notions and concepts, like the GitOps Model, CI/CD, Pipeline, etc. Being a DevOps professional is an art ✨. These notions and concepts are extremely important to know. Without them, it can be really complicated to understand the work of a DevOps engineer. Their job is to simplify the entire workflow, starting from the developer who wants to update their code, to the moment the code is deployed and running in the production environment.
We read a LOOOOOOOT of documentation for this project, and we compiled it in the wiki section of this repository. The wiki follows the subject; everything is addressed chronologically in relation to the project (parts 1, 2, and 3). Take this wiki section as a guide/walkthrough for doing the project OR learning about the world of DevOps (the Bonus Part is not in the wiki).
We decided not to automate everything completely to avoid losing our correctors during the evaluation defense. We concluded that it would be clearer if we performed the actions during the corrections. However, we could have done it in a more DevOps-friendly manner.
The project is divided into 3 parts and a bonus part. Each part teaches you some tools and new concepts to know.
This part is the simplest: Create 2 virtual machines with Vagrant and install K3s on them. One in controller mode and the other in agent mode.
In this part, you learn how to use Vagrant, and, the most important, create your first Kubernetes cluster. Create a Kubernetes cluster imply to know HOW Kubernetes works. This part can be simple, but this is the starting point for understanding Kubernetes.
This part is more concrete: deploy 3 web application in your Kubernetes Cluster. Here, you understand more of WHAT Kubernetes IS USED FOR, and how to manage it after the cluster is created.
Kubernetes comes with a lot of new notions and concept, like Kubernetes Object, Nodes, Pod, etc... And it's the moment to learn more how to manage a Kubernetes Cluster.
This part introduce the concept of CI/CD and GitOps, and how ArgoCD is a powerful tool for deploying a new versin of an application.
Here you will create your first Continuous Deployement and Delivery Pipeline. The goal of this part ? Describe your application in a remote repository (GitHub), and watch how the new version of your desired app (declared in your separate repo) is redeployed in your cluster by using ArgoCD: you need to follow the GitOps model.
You need to do the same thing as the previous part, but your remote repository need to be host in your own Kubernetes Cluster. Stop using https://github.com, go install your own GitLab instance in your Kubernetes Cluster and host all of your code inside !!!
Your learn how to use Helm, the "package manager for Kubernetes", for install a GitLab instance in your Kubernetes Cluster.
- Part 1 of the subject - From Chapter I - Vagrant to Chapter III - K3s in the wiki
- Part 2 of the subject - Chapter IV - Creation of an app in the wiki
- Part 3 of the subject - Chapter V - ArgoCD, CI CD, GitOps Model in the wiki
- Bonus Part
 Noah (noalexan)  |
 Nimpô (mayoub) |