You deployed a web app on EC2 and a MySQL database on RDS, but the app cannot connect to the DB. List the possible VPC, subnet, and security configurations you would check.

Question

Lingesh Kumar K · Accepted Answer

If app can't connect: check VPC, subnet routing, SG rules, NACLs, DB endpoint, and IAM permissions.

You deployed a web app on EC2 and a MySQL database on RDS, but the app cannot connect to the DB. List the possible VPC, subnet, and security configurations you would check.

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