AKS Architecture Diagram

Production-Grade AKS Cluster with Terraform

🎯 Problem Statement Organizations moving to Kubernetes often struggle with: Manual cluster provisioning leading to configuration drift Lack of security hardening and compliance controls No standardized approach to cluster lifecycle management Difficulty reproducing environments consistently πŸ’‘ Solution Overview I designed and implemented a fully automated AKS deployment pipeline using Terraform that provisions production-grade Kubernetes clusters with built-in security, monitoring, and networking configurations. πŸ—οΈ Architecture β”Œ β”‚ β”œ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”” ─ ─ ─ ─ ─ ─ ─ ─ β”Œ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”” ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ β”Œ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”” β”Œ β”‚ β”‚ β”‚ β”” β”Œ β”‚ β”‚ β”” ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ A I C ─ ─ A + ─ ─ ─ ─ ─ ─ ─ β”Œ β”‚ β”‚ β”” β”Œ β”‚ β”‚ β”” ─ ─ p n o ─ ─ z ─ ─ ─ ─ ─ ─ ─ A ─ ─ ─ ─ ─ ─ p g n ─ ─ u L ─ ─ ─ ─ ─ ─ ─ z ─ S ( ─ ─ S ( ─ ─ ─ r t ─ ─ r o ─ ─ ─ ─ ─ ─ ─ u ─ u A ─ ─ u A ─ ─ ─ G e r ─ ─ e g ─ ─ ─ ─ ─ ─ ─ r ─ b K ─ ─ b p ─ ─ ─ a s o ─ ─ ─ ─ ─ ─ ─ ─ ─ e ─ n S ─ ─ n p ─ ─ ─ t s l ─ ─ M A ─ ─ ─ ─ ─ ─ ─ ─ e ) ─ ─ e G ─ ─ ─ e l ─ ─ o n ─ ─ ─ ─ ─ ─ ─ V ─ t ─ ─ t W ─ ─ ─ w e ─ ─ n a ─ ─ ─ ─ ─ ─ ─ N ─ ─ ─ ) ─ ─ ─ a r ─ ─ i l ─ ─ ─ ─ ─ ─ ─ e ─ 1 ─ ─ 2 ─ ─ ─ y ─ ─ t y ─ ─ ─ ─ ─ ─ ─ t ─ ─ ─ ─ ─ ─ ─ ─ o t ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ r i ─ ─ ─ ─ ─ ─ ─ ┐ β”‚ β”‚ β”˜ ┐ β”‚ β”‚ β”˜ ─ ─ ─ ─ c ─ ─ ─ ─ ─ ─ ─ β—„ ─ ─ ─ ─ s ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ R ┐ β”‚ β”‚ β”Ό β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”˜ ┐ β”‚ β”‚ β”‚ β”˜ ┐ β”‚ β”‚ β”˜ ─ ─ ─ A ─ ─ e ─ β—„ ─ ─ ─ z ─ ─ s ─ ─ ─ ─ ─ u ─ ─ o β”Œ β”‚ β”‚ β”Ό β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”Ό β”‚ β”‚ β”” β”Œ β”‚ β”‚ β”” ─ ─ ─ r ─ ─ u ─ ─ ─ ─ ─ ─ ─ ─ ─ e ─ ─ r ─ β–Ί β–Ί ─ ─ ─ ─ ─ ─ ─ ─ c ─ β”Œ β”‚ β”‚ β”” β”Œ β”‚ β”‚ β”” β”Œ β”‚ β”” β”Œ β”‚ β”‚ β”” ─ ─ ─ ─ ─ ─ S ─ ─ e ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ C ( ─ ─ ─ ─ u ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ o A ─ ─ ─ ─ b ─ ─ G ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ n C ─ ─ ─ ─ s ─ ─ r ─ ─ S ( ─ ─ U ( ─ ─ A ─ ─ A ( ─ ─ ─ t R ─ ─ ─ ─ c ─ ─ o ─ ─ y 3 ─ ─ s s ─ ─ z ─ ─ z s ─ ─ ─ a ) ─ ─ ─ ─ r ─ ─ u ─ A ─ s ─ ─ e p ─ ─ u ─ ─ u e ─ ─ ─ i ─ ─ ─ ─ i ─ ─ p ─ K ─ t n ─ ─ r o ─ ─ r ─ ─ r c ─ ─ ─ n ─ ─ ─ ─ p ─ ─ ─ S ─ e o ─ ─ t ─ ─ e ─ ─ e r ─ ─ ─ e ─ ─ ─ ─ t ─ ─ ─ ─ m d ─ ─ N ─ ─ ─ ─ e ─ ─ ─ r ─ ─ ─ ─ i ─ ─ ─ C ─ e ─ ─ o i ─ ─ C ─ ─ K t ─ ─ ─ ─ ─ ─ ─ o ─ ─ ─ l ─ N s ─ ─ d n ─ ─ N ─ ─ e s ─ ─ ─ R ─ ─ ─ ─ n ─ ─ ─ u ─ o , ─ ─ e s ─ ─ I ─ ─ y ─ ─ ─ e ─ ─ ─ ─ ─ ─ ─ s ─ d ─ ─ t ─ ─ ─ ─ m ─ ─ ─ g ─ ─ ─ ─ ─ ─ ─ t ─ e a ─ ─ P a ─ ─ + ─ ─ V g ─ ─ ─ i ─ ─ ─ ─ ─ ─ ─ e ─ u ─ ─ o n ─ ─ ─ ─ a m ─ ─ ─ s ─ ─ ─ ─ ─ ─ ─ r ─ P t ─ ─ o c ─ ─ C ─ ─ u t ─ ─ ─ t ─ ─ ─ ─ ─ ─ ─ ─ o o ─ ─ l e ─ ─ a ─ ─ l ) ─ ─ ─ r ─ ─ ─ ─ ─ ─ ─ ─ o s ─ ─ s ─ ─ l ─ ─ t ─ ─ ─ y ─ ─ ─ ─ ─ ─ ─ ─ l c ─ ─ ) ─ ─ i ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ a ─ ─ ─ ─ c ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ l ─ ─ ─ ─ o ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ e ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ) ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ β”‚ β”‚ ─ ─ β”‚ β”‚ ─ ─ ─ ─ β”‚ β”‚ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐ β”˜ ┐ β”˜ ┐ β”‚ β”˜ ┐ β”˜ ─ ─ ─ ─ ─ ─ ─ ─ ─ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ ─ ─ β”‚ β”‚ ─ ─ ─ ─ ─ ─ ┐ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”˜ ┐ β”˜ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ ─ ─ ─ ─ ┐ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”˜ ─ ─ ─ β”‚ ─ ─ ─ ─ ─ ─ ─ ─ ─ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ ─ ┐ ─ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”˜ β”‚ β”‚ πŸ› οΈ Technologies Used Category Technology IaC Terraform 1.5+ Cloud Provider Microsoft Azure Container Orchestration Azure Kubernetes Service (AKS) Networking Azure CNI, Calico Network Policies Ingress Application Gateway Ingress Controller Secrets Management Azure Key Vault + CSI Driver Monitoring Azure Monitor, Prometheus, Grafana CI/CD GitHub Actions State Management Azure Storage Backend πŸ“ Project Structure a β”œ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”‚ β”œ β”‚ β”‚ β”‚ β”œ β”œ β”œ β”” k ─ ─ ─ ─ ─ ─ s ─ ─ ─ ─ ─ ─ - t m β”œ β”‚ β”‚ β”‚ β”‚ β”œ β”œ β”” e β”œ β”œ β”” m v o t e o ─ ─ ─ ─ n ─ ─ ─ a a u e r d ─ ─ ─ ─ v ─ ─ ─ i r t r r u i n i p r a l a β”œ β”œ β”œ β”” n m s r d s p . a u a f e k ─ ─ ─ ─ e o e o e t r t b t f o s s ─ ─ ─ ─ t n c n v a o f l s o r / / w i u m / g d e . r m m v o v o t r e i / s t m / a a u e r o i n n . f . i r t r k r t t g t t n i p s i i y s / f f . a u i n n / / v t b t o g g a f l s n / / r e . s s s t . . . f t e t f x f a m p l e πŸ” Security Features Azure AD Integration - RBAC with Azure Active Directory Pod Security Standards - Enforced baseline policies Network Policies - Calico for micro-segmentation Private Cluster - API server with private endpoint Key Vault Integration - Secrets injected via CSI driver Defender for Containers - Runtime threat protection πŸ“Š Key Metrics Achieved Metric Result Deployment Time < 20 minutes Configuration Drift 0% (enforced via GitOps) Security Compliance 100% CIS Benchmark Cost Optimization 35% savings with spot nodes πŸ”‘ Key Learnings Module Reusability - Designing Terraform modules for reuse across environments saves significant time State Management - Remote state with locking is critical for team collaboration Security First - Building security into the infrastructure from day one prevents costly retrofits Documentation - Self-documenting code with clear variable descriptions improves maintainability πŸ”— Resources GitHub Repository: github.com/yourusername/aks-terraform Related Blog Post: Best Practices for Production AKS Clusters Want to discuss this project? 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June 15, 2024 Β· 9 min Β· 1775 words Β· Elmi Abdullahi
Multi-Cloud Architecture Diagram

Multi-Cloud Infrastructure with Terraform

🎯 Problem Statement Enterprise organizations face several challenges with cloud infrastructure: Vendor Lock-in - Over-reliance on a single cloud provider Disaster Recovery - Need for geographic and provider redundancy Compliance - Data residency requirements across regions Cost Optimization - Leveraging best pricing across providers Complexity - Managing infrastructure across multiple platforms πŸ’‘ Solution Overview I architected and implemented a multi-cloud infrastructure spanning Azure and GCP using Terraform, providing high availability, disaster recovery, and cost optimization while maintaining a unified Infrastructure as Code approach. ...

April 10, 2024 Β· 12 min Β· 2394 words Β· Elmi Abdullahi
Terraform Best Practices

Terraform Best Practices for Production Infrastructure

Introduction After managing Terraform codebases across multiple organizations and cloud providers, I’ve compiled these battle-tested best practices. Whether you’re starting fresh or refactoring existing infrastructure, these patterns will help you build maintainable, scalable IaC. Project Structure Standard Module Layout t β”œ β”‚ β”‚ β”‚ β”œ β”‚ β”‚ β”‚ β”œ β”” e ─ ─ ─ ─ r ─ ─ ─ ─ r a m β”œ β”œ β”” e β”œ β”œ β”” . R f o ─ ─ ─ n ─ ─ ─ t E o d ─ ─ ─ v ─ ─ ─ e A r u i r D m l n c d r d s p r M - e e o a o e t r a E p s t m t n v a o f . r w p a m / g d m o u b e i r d j r t a n n m e k e s t g - c i / e s / v t n / / e / g r / s i o n # # m m a a i i n n . . t t f f , , v t a e r r i r a a b f l o e r s m . . t t f f , v a o r u s t , p u b t a s c . k t e f n , d . v t e f r s i o n s . t f File Naming Conventions File Purpose main.tf Primary resources and module calls variables.tf Input variable declarations outputs.tf Output value declarations versions.tf Provider and Terraform version constraints locals.tf Local value definitions data.tf Data source declarations backend.tf Backend configuration Module Design Patterns 1. Single Responsibility Each module should do one thing well: ...

September 15, 2024 Β· 8 min Β· 1677 words Β· Elmi Abdullahi