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02_argocd_basics

• Learn ArgoCD basics, architecture, and key concepts
• Covers core components and how ArgoCD fits into GitOps

03_setup_installation

• Step-by-step guide to setting up and installing ArgoCD
• Includes installation scripts and prerequisites

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Chapter 4: First App Deployment with ArgoCD

In this chapter, we will learn how to deploy applications with ArgoCD using three different approaches:

1. UI Approach → NGINX example
2. CLI Approach → Apache example
3. Declarative Approach → Online Shop example

Each method has its use cases, but only the Declarative approach aligns with the principles of GitOps.

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ArgoCD Setup and Installation

Let's see how we can Setup & Install ArgoCD (UI and CLI) and access via the browser.

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Prerequisites

Before starting, ensure you have the following installed on your system:

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Chapter 2: ArgoCD Basics

2.1 Why ArgoCD for GitOps?

• Purpose-built for Kubernetes: ArgoCD is a Kubernetes controller, native to the ecosystem.
• Declarative + GitOps: Uses Git repos as the source of truth.
• Multi-cluster ready: Manage multiple clusters from one ArgoCD instance.
• UI + CLI + API: Rich user interface and automation APIs.
• Security: In-cluster controller, supports RBAC, SSO, audit logs.
• Ecosystem: Part of Argo Project (with Workflows, Rollouts, Events).