What I try to do
- Send a http request from app-gateway to app-backend.
- I've created apps for the purpose. (https://github.com/tbrand/app-mesh-sample)
What I can't do
- When the app-gateway sends http request to app-backend, it says 'ENOTFOUND'. (DNS lookup failure?)
Details
- I have two minimum apps (app-gateway and app-backend. written in Node.js) on ECS under the same VPC. They are running well independently.
- Envoy proxies are injected by ECS console with default configuration.
- I defined an App Mesh which has a router to the backend service.
- AWS Cloud Map is created by ECS. It seems the instances are correctly registered on each service.
- I use 3000 as a listen port for every definitions except ALB. (It uses 80.)
Architecture
ECS
- mymesh (ECS cluster)
- app-gateway (ECS service. The task definition is injected by envoy proxy.)
- app-backend (ECS service. The task definition is injected by envoy proxy.)
AWS App Mesh
- app-backend.mymesh.local (Virtual service. provider=app-backend (Virtual router))
- app-gateway.mymesh.local (Virtual service. provider=app-gateway (Virtual node))
- app-backend (Virtual router. It has a route to the app-backend (Virtual node).)
- app-backend (Virtual node. service discovery=AWS Cloud Map, namespace=mymesh.local, service name=app-backend)
- app-gateway (Virtual node. service discovery=AWS Cloud Map, namespace=mymesh.local, service name=app-gateway, backend=app-backend.mymesh.local)
AWS Cloud Map
- mymesh.local (Namespace)
- app-backend (Service. It has a instance registered by ECS)
- app-gateway (Service. It has a instance registered by ECS)
Route 53
- mymesh.local (Private host zone. It's assciated with the VPC. It's created when I defined first service on ECS.)
- app-backend.mymesh.local (A record. The value is the IP address which ECS task is running on.)
- app-gateway.mymesh.local (A record. The value is the IP address which ECS task is running on.)
ALB
- app-gateway (A public endpoint to the app-gateway service. It works well.)
- app-gateway (A target group. The targets are registered by ECS.)
According to this sample app, I thought that I could access to the app-backend via app-backend.mymesh.local like this.
But it raises the error.
Please tell me if I should tell more details. (I would tell them by text or screenshots.)
How can I make the http request successfully between ECS services with App Mesh?
