EC2 to RDS Connectivity Troubleshooting
A backend EC2 instance cannot connect to a PostgreSQL RDS database. Find and fix the root cause.
What you will learn
- Trace VPC connectivity
- Read security group intent
- Validate PostgreSQL access
Catalog tags
Prerequisites
You need an AWS account, Terraform, AWS CLI credentials with permission to create the listed resources, and enough comfort with shell commands to inspect failures.