User Requests:
-
Users initiate requests that are routed through Amazon Route 53, a scalable DNS web service.
-
Route 53 ensures low-latency routing to endpoints globally.
Web Servers:
- The application runs on EC2 instances within an Auto Scaling group across multiple Availability Zones (AZs).
- Auto Scaling dynamically adjusts capacity based on demand.
Load Balancing:
- An Application Load Balancer (ALB) efficiently distributes incoming traffic across EC2 instances.
- ALB enhances application availability.
Security and Traffic Routing:
- The architecture uses a VPC with public and private subnets.
- NAT gateways allow outbound traffic from private subnets while blocking unsolicited inbound traffic.
Database Tier:
- Amazon RDS provides database services.
- Master-slave replication ensures high availability and failover support.
| Name | Version |
|---|---|
| aws | ~> 5.0 |
| Name | Version |
|---|---|
| aws | 5.47.0 |
| Name | Type |
|---|---|
| aws_eip.eip-1 | resource |
| aws_eip.epi-2 | resource |
| aws_internet_gateway.igw | resource |
| aws_nat_gateway.public_nat-1 | resource |
| aws_nat_gateway.public_nat-2 | resource |
| aws_route_table.private_routeTable-az-1 | resource |
| aws_route_table.private_routeTable-az-2 | resource |
| aws_route_table.public_route_table | resource |
| aws_route_table_association.private_subnet-1and3_association | resource |
| aws_route_table_association.private_subnet-2and4_association | resource |
| aws_route_table_association.public_route_table_association | resource |
| aws_security_group.alb-igw-sg | resource |
| aws_security_group.database-sg | resource |
| aws_security_group.ssh-server-sg | resource |
| aws_security_group.web_server-sg | resource |
| aws_subnet.private_subnets | resource |
| aws_subnet.public_subnets | resource |
| aws_vpc.vpc | resource |