ArgoCD Documentation

ArgoCD is a declarative, GitOps continuous delivery tool for Kubernetes. This documentation covers installation, configuration, and management of ArgoCD for GitOps workflows.

Table of Contents

• Installation
• Configuration
• Application Management
• GitOps Workflows
• RBAC and Security
• Monitoring and Observability
• Troubleshooting
• Best Practices

Overview

ArgoCD is a continuous delivery tool that follows the GitOps pattern of using Git repositories as the source of truth for defining the desired application state.

Key Features

• Declarative: Application definitions stored in Git
• Automated Sync: Continuous synchronization with Git repositories
• Multi-Environment: Support for multiple clusters and environments
• Web UI: Intuitive web interface for application management
• CLI Support: Command-line interface for automation
• RBAC: Role-based access control
• Multi-Source: Support for multiple Git repositories

Architecture

ArgoCD consists of several components:

• API Server: REST API and gRPC server
• Repository Server: Internal service that maintains Git repository cache
• Application Controller: Kubernetes controller that monitors applications
• Server: Web UI and API server
• Redis: Caching and session storage

GitOps Principles

ArgoCD implements GitOps by:

1. Git as Source of Truth: Application manifests stored in Git
2. Declarative Configuration: Desired state defined in Git
3. Automated Synchronization: Continuous monitoring and sync
4. Observability: Clear visibility into application state

Quick Start

1. Install ArgoCD
2. Access the Web UI
3. Create your first application
4. Configure Git repositories

Prerequisites

• Kubernetes cluster (v1.19+)
• kubectl configured
• Git repository with application manifests
• RBAC permissions for ArgoCD components