AWS Disaster Recovery Framework

Automated disaster recovery framework for AWS cloud environments implements cross-region S3 replication, RDS Multi-AZ failover, automated failover scripts, and RTO/RPO benchmarking with Terraform infrastructure provisioning.

Overview

This framework addresses the critical challenge of ensuring business continuity when primary AWS infrastructure fails. It automates the detection, failover, and validation process to minimize recovery time and data loss across regions.

Features

• Cross-Region S3 Replication - Automated bucket replication with 15-minute SLA and object-level validation
• RDS Multi-AZ Failover - Automated failover with RTO benchmarking and read replica promotion
• Health Monitoring - Continuous health checks across RDS, S3, and EC2 resources with failure detection
• DR Orchestration - End-to-end DR test workflow with structured RTO/RPO benchmark reports
• Terraform IaC - Full infrastructure provisioning for primary and DR environments across two regions
• Recovery Validation - Automated post-failover validation to confirm data integrity and service availability

Tech Stack

Layer	Technology
Cloud	AWS (S3, RDS, EC2, IAM)
Infrastructure	Terraform
Automation	Python, boto3
Testing	PyTest, moto
Config	YAML

Recovery Objectives

Metric	Target
RTO (Recovery Time Objective)	≤ 300 seconds
RPO (Recovery Point Objective)	≤ 15 minutes
Replication Lag	≤ 15 minutes
Backup Retention	30 days

Setup

# Install dependencies
pip install -r requirements.txt

# Configure AWS credentials
aws configure

# Provision infrastructure
cd terraform
terraform init
terraform plan
terraform apply

# Run DR test
cd scripts
python run_dr_test.py

Run Tests

pytest tests/ -v

Architecture

┌──────────────────────────────────────────────────┐
│              DR Orchestrator                      │
│  Health Check → Failover → Validate → Benchmark  │
├───────────────────────┬──────────────────────────┤
│   PRIMARY (us-east-1) │    DR (us-west-2)         │
│   ┌───────────────┐   │   ┌───────────────────┐  │
│   │ RDS Primary   │──▶│   │ RDS Read Replica  │  │
│   │ (Multi-AZ)    │   │   │ (Promotion Ready) │  │
│   └───────────────┘   │   └───────────────────┘  │
│   ┌───────────────┐   │   ┌───────────────────┐  │
│   │ S3 Primary    │──▶│   │ S3 DR Replica     │  │
│   │ (Versioned)   │   │   │ (Cross-Region)    │  │
│   └───────────────┘   │   └───────────────────┘  │
└───────────────────────┴──────────────────────────┘