I'm trying to get Kafka running on an AWS ECS container. I have this setup already / working fine on my local docker environment, using the spotify/kafka image

To get this working locally, I needed to ensure the ADVERTISED_HOST environment variable was set. ADVERTISED_HOST needed to be set as the containers external IP, otherwise when I try to connect it was just giving me connection refused .

My local docker-compose.yaml has this for the kafka container:

kafka: image: spotify/kafka hostname: kafka environment: - ADVERTISED_HOST=192.168.0.70 - ADVERTISED_PORT=9092 ports: - "9092:9092" - "2181:2181" restart: always

Now the problem is, I don't know what the IP is going to be, as I dont know which instance this will run on. So how do I set that environment variable?