CI/CD Pipeline with Kubernetes

This page provides a detailed explanation of the CI/CD pipeline implementation using Kubernetes, GitOps methodology, and other modern DevOps tools.

Overview

The CI/CD pipeline was designed to enable seamless deployments and version management in a Kubernetes environment.

Key Features:

  1. Semantic Versioning: - Automatically assigns a version to Docker images based on Conventional Commits rules. - Integrates with GitHub Actions for building, testing, and releasing artifacts.

  2. GitOps Deployments: - Uses ArgoCD for declarative GitOps-based deployments. - Automatically updates Kubernetes deployments with the latest Docker image tags using ArgoCD Image Updater.

  3. HELM Chart Management: - Streamlines the deployment of Kubernetes applications. - Separates configuration from application code for modularity and flexibility.

  4. Secrets Management with Vault: - Stores and injects application secrets securely using HashiCorp Vault. - Automates secrets retrieval using Kubernetes authentication.

  5. Monitoring and Logging: - Implements centralized monitoring with Grafana and Prometheus. - Leverages AWS CloudWatch for real-time logs and metrics.

  6. Infrastructure as Code: - Deploys AWS resources (e.g., EC2, S3, RDS) using Terraform. - Ensures consistency and repeatability in infrastructure provisioning.

CI/CD Architecture

CI/CD Diagram

Workflow Steps

  1. Code Commit: - Developers push code changes to a Git repository following the Conventional Commits standard.

  2. GitHub Actions Build Pipeline: - Triggers automated builds and tests. - Generates a Docker image tagged with a semantic version.

  3. Pushing Docker Images: - Docker images are pushed to a container registry (e.g., GitHub Container Registry).

  4. ArgoCD Sync: - ArgoCD syncs the updated Helm charts and applies changes to the Kubernetes cluster.

  5. Application Deployment: - Kubernetes applies the updated configuration and restarts pods as needed.

Tools and Technologies

CI/CD Tools: - GitHub Actions - ArgoCD - ArgoCD Image Updater

Kubernetes Tools: - HELM - HashiCorp Vault - kubectl

Monitoring and Logging: - Grafana - Prometheus - AWS CloudWatch

Infrastructure as Code: - Terraform - AWS Services (EC2, S3, CloudFront)

Next Steps

To dive deeper into the implementation, see the following sections: - Read about AWS Cloud Architecture »