Ravi Sir's Cards › AWS
Why are ALB targets unhealthy?
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
What it is
The health check path fails or times out.
Why it matters
describe-target-health shows Reason.
Target.ResponseCodeMismatch
How / example
Check SG allows the ALB SG and app listens on the port.