Connect to a service on a different stack from docker-compose

Question

I'm trying to connect a service one in stack abc - abc_one to service two in stack zyx - zyx_two . These services share the network az-network .

I've read here that it's possible manually , but I need to do this with docker-compose.yml files for deploying to my swarm .

 

A simple version of of abc_one is

version:  "3.5"

services:

    one:
        image: "10.30.13.81:5000/dotnetmicroservice"
        environment:
            ElasticSearchLogging:Uri: "http://zyx_two:9200/"
        networks:
            - az-network

networks:
    az-network:
        external: true

and zyx_two

version:  "3.5"

services:

    two:
        image: "10.30.13.81:5000/dotnetmicroservice"
        networks:
            - az-network

networks:
    az-network:
        external: true

Answer 1

It should work without adding zyx_ prefix.

az-network must be an overlay docker network

docker network create -d overlay --attachable az-network

Service name must be unique on all stacks in the same network.

abc stack (docker stack deploy -c abc-compose.yml abc)

version:  "3.5"

services:

    one:
        image: "10.30.13.81:5000/dotnetmicroservice"
        environment:
            ElasticSearchLogging:Uri: "http://two:9200/"
        networks:
            - az-network

networks:
    az-network:
        external: true

zyx stack (docker stack deploy -c zyx-compose.yml zyx)

version:  "3.5"

services:

two:
    image: "10.30.13.81:5000/dotnetmicroservice"
    networks:
        - az-network

networks:
    az-network:
        external: true