AWS ECS 中的退出代码 1？

Question

I am trying to publish an application to AWS Elastic Container Service(ECS). I am using the ECS CLI to compose my docker-compose file. There are 2 Docker components. A web container(Flask application) and a server container(NGINX). When just the web container runs all is ok but when I run the server I always get Exit code 1.

docker-compose.yaml

version: "3"

services:
    web:
        image: 131099/generateme
        expose:
            - 5000
        logging:
            driver: awslogs
            options: 
                awslogs-group: generateme
                awslogs-region: eu-west-2
                awslogs-stream-prefix: web
    server:
        image: 131099/generateme-server
        ports:
            - 80:80
        environment:
            - DOCKER_PROVIDER = ecs
            - DEBUG = true
        depends_on:
            - web
        logging:
            driver: awslogs
            options: 
                awslogs-group: generateme
                awslogs-region: eu-west-2
                awslogs-stream-prefix: server

Dockerfile 131099/generateme-server

FROM nginx

RUN rm /etc/nginx/conf.d/default.conf
COPY nginx.conf /etc/nginx/conf.d

nginx.conf

upstream generateme {
    server web:5000;
}

server {

    listen 80;

    location / {
        proxy_pass http://generateme;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header Host $host;
        proxy_redirect off;
    }

}

Any ideas why the exit code is 1? I have checked the logs and it says:

nginx: [emerg] host not found in upstream "web:5000" in /etc/nginx/conf.d/nginx.conf:2

Shouldn't the web container be up first before the server because of the depends_on property?

Answer 1

Looks like you forgot the --enable-service-discovery flag for ecs-cli .

Check out the documentation for step by step, but basically when you bring a service up use that flag.

ecs-cli compose --project-name generateme service up --private-dns-namespace generateme --vpc vpc-xxxxx --enable-service-discovery