About This Architecture

Multi-AZ EKS cluster spanning ap-south-1a and ap-south-1b with internal ALB distributing traffic across two node groups running m5.large EC2 workers. Application pods communicate with RDS SQL Server primary and standby instances deployed across private data subnets, ensuring automatic failover and zero data loss. NAT Gateways enable outbound connectivity from private subnets while CloudWatch monitors cluster health and Secrets Manager secures database credentials. This architecture demonstrates production-grade Kubernetes on AWS with built-in redundancy, compliance-ready secrets management, and observability across availability zones. Fork and customize this diagram on Diagrams.so to match your region, instance types, or add additional services like ElastiCache or Aurora.

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How do I architect a highly available EKS cluster with RDS failover across multiple AWS availability zones?

This diagram shows a multi-AZ EKS deployment spanning ap-south-1a and ap-south-1b with an internal ALB routing traffic to node groups in private subnets. RDS SQL Server primary and standby instances enable automatic failover, while Secrets Manager secures credentials and CloudWatch provides cluster observability.