aws-infrastructure
Expert in AWS infrastructure setup including EC2, VPC, security groups, Application Load Balancers, Route53 DNS, and SSL/TLS certificates. Use this skill for AWS infrastructure configuration and deployment.
What this skill does
# AWS Infrastructure Expert ## Overview This skill enables AI assistants to help set up and configure AWS infrastructure for micro startups, including EC2 instances, VPCs, security groups, load balancers, DNS, and SSL certificates. ## When to Use This Skill This skill activates when users need: - EC2 instance setup and configuration - VPC and networking setup - Security group configuration - Application Load Balancer setup - Route53 DNS configuration - SSL/TLS certificate management (ACM) - Auto-scaling groups - CloudWatch monitoring ## EC2 Setup ### Instance Types - **Development:** t3.medium (2 vCPU, 4GB RAM) - **Production (small):** t3.large (2 vCPU, 8GB RAM) - **Production (medium):** m5.large (2 vCPU, 8GB RAM) ### Storage - Use gp3 SSD volumes - Development: 20GB minimum - Production: 100GB+ based on needs - Enable EBS snapshots for backups ### Key Pairs - Generate or import SSH key pairs - Store private keys securely - Use IAM roles instead of access keys when possible ## VPC Configuration ### Basic Setup - Create VPC with CIDR block (e.g., 10.0.0.0/16) - Create public and private subnets - Set up Internet Gateway - Configure route tables - Set up NAT Gateway for private subnets (if needed) ### Subnets - Public subnets: For load balancers, bastion hosts - Private subnets: For application servers, databases - Multi-AZ for high availability ## Security Groups ### Application Security Group ``` Inbound: - HTTP (80) from ALB security group - HTTPS (443) from ALB security group - SSH (22) from bastion/your IP only Outbound: - All traffic (0.0.0.0/0) ``` ### Database Security Group ``` Inbound: - MongoDB (27017) from application security group only - Redis (6379) from application security group only - SSH (22) from bastion/your IP only Outbound: - All traffic (0.0.0.0/0) ``` ### Load Balancer Security Group ``` Inbound: - HTTP (80) from 0.0.0.0/0 - HTTPS (443) from 0.0.0.0/0 Outbound: - HTTP (80) to application security group - HTTPS (443) to application security group ``` ## Application Load Balancer ### Setup 1. Create ALB in public subnets 2. Configure target groups (EC2 instances) 3. Set up health checks 4. Configure listeners (HTTP → HTTPS redirect) 5. Attach SSL certificate from ACM ### Health Checks - Path: `/health` or `/api/health` - Protocol: HTTP - Port: 3001 (backend) or 3000 (frontend) - Healthy threshold: 2 - Unhealthy threshold: 2 - Timeout: 5 seconds - Interval: 30 seconds ## Route53 DNS ### Domain Setup 1. Create hosted zone for domain 2. Create A record (alias) pointing to ALB 3. Create CNAME for www subdomain 4. Update nameservers at domain registrar ### SSL/TLS (ACM) 1. Request certificate in ACM (us-east-1 for CloudFront/ALB) 2. Validate via DNS (add CNAME records) 3. Attach certificate to ALB listener 4. Certificate auto-renews ## CloudWatch Monitoring ### Metrics - EC2: CPU, Memory, Disk, Network - ALB: Request count, Target response time, HTTP errors - Custom metrics for application-specific data ### Alarms - High CPU utilization - Low disk space - Application errors (via CloudWatch Logs) - Unhealthy target instances ## Best Practices - Use IAM roles instead of access keys - Enable CloudTrail for audit logging - Use VPC endpoints for AWS service access - Implement least privilege security groups - Use private subnets for databases - Enable encryption at rest for EBS volumes - Set up automated backups (EBS snapshots) - Monitor costs with AWS Cost Explorer ## Integration This skill integrates with `/db-setup` for MongoDB on EC2 and `/deploy` for deployment workflows.
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