Kubernetes: GitOps with Argo CD

Course details

In this comprehensive course, Janani Ravi gives you hands-on training using GitOps with Argo CD in continuous infrastructure deployment on Kubernetes. Learn to configure Argo CD, deploy applications to local and external clusters, and manage resources efficiently across multiple environments. Discover how to automate deployments using Helm charts, and then apply lifecycle hooks and sync waves to control deployment order and dependencies. Find out how Argo CD integrates seamlessly with GitHub and private repositories to streamline your development process. Build your understanding of how to automate infrastructure management and application deployment scaling across complex Kubernetes architectures. Ideal for DevOps Engineers and Site Reliability Engineers, this course offers you valuable skills in deploying and managing infrastructure on Google Kubernetes Engine, as well as implementing application sets to manage multiple microservices.

Concepts

Introduction

Where does Argo CD fit
Quick technology overview

Getting Started with Argo CD

Introducing GitOps
Introducing Argo CD
Continuous integration of infrastructure
Creating a local K3s cluster
Argo CD architectural overview

Working with Argo CD on a Local Kubernetes Cluster

Installing Argo CD services and CLI
Running the Argo CD web UI
Setting up a Git repo for infrastructure specifications
Deploying an application using Argo CD

Configuring the Argo CD Application

Changing the Argo CD admin password
Syncing updated infrastructure manifests
Mitigating configuration drift
Automated sync pruning and self-healing
History and rollback

Deploying Infrastructure to an External Kubernetes Cluster

Creating an external K3s cluster
Configuring Argo CD with the external cluster
Creating a new Argo CD project using the CLI
Deploying an application to the external cluster
Building and registering a custom Docker image
Pushing infrastructure specifications to a private Git repo
Deploying the Flask application to the external cluster
Updating the custom application

Using Application Sets, Sync Waves, and Helm Charts to Deploy Infrastructure

Creating a second external cluster
Scaling deployments with application sets
Configuring sync waves and lifecycle hooks
Performing application sync in waves
Defining the Kubernetes deployment using Helm charts
Verifying Helm chart using dry run and manual deployment
Deploying Helm charts from Git

Deploying Infrastructure to Google Kubernetes Engine

Connecting to a GitHub repo using SSH
Enabling the Kubernetes API and the Artifact Registry API
Creating a GKE cluster
Setting up Argo CD on GKE
Registering the app image with Google Artifact Registry
Configuring a service account to access images in the Artifact Registry
Connecting Argo CD to a private Git repo using SSH
Deploying infrastructure to the GKE cluster

Conclusion

Summary and next steps