Strategy:

Design and implement a fully automated CI/CD + GitOps platform on AWS, with dynamic infrastructure provisioning using Terraform, CI/CD pipelines using Jenkins, and ArgoCD for declarative Kubernetes delivery.

Implementation Stack

Key Steps:

Jenkins CI Pipeline

• Triggered on Git events (PR open, merge)

• Steps:

  • Lint → Unit Test → Build Docker Image

  • Run SonarQube analysis

  • Push to ECR

  • Run Integration Tests

  • Trigger ArgoCD sync (via Git push to infra repo)

SonarQube Integration

• Jenkins pipeline includes SonarQube scanner step

• Quality gates enforced: coverage, complexity,security, duplication

• PRs failed automatically if thresholds missed

Terraform for Infra

• Modular setup for:

  • VPC, Subnets, IAM roles

  • RDS MySQL and ElastiCache Redis (with restore from snapshot)

  • EKS Cluster (autoscaled, private/public split)

• Environment names dynamically generated from Git branch/PR number

• Destroyed on merge/close if not main/staging

Dynamic Environments (Per Branch/PR)

• Jenkins triggers Terraform with vars:

  • env=feature/ABC-123

• Terraform provisions:

  • New namespace in EKS

  • New DB & Redis instances (restored from latest snapshot)

  • DNS routing via Route 53 (abc123.dev.client.com)

• On merge/close: infra destroyed, costs saved

ArgoCD GitOps Sync

• Each env has an Application manifest in the GitOps repo

• Jenkins updates values.yaml or image.tag

• ArgoCD detects Git change and auto-syncs to EKS

EKS Workloads

• Microservices deployed via Helm charts

• Secrets from AWS Secrets Manager

• Namespaced per environment