privileged mode in docker compose in a swarm

Question

I am using docker-compose.yml to deploy services in a docker swarm which has cluster of raspberry pis. My services require access to the raspberry pi GPIO and needs privileged mode. I am using docker version 18.02 with docker-compose version 3.6. When I deploy the stack, I receive the following message and the services do not get deployed: "Ignoring unsupported options: privileged". Any tips? Below is my docker-compose.yml file

version: '3.6'     

networks:
    swarm_network:
        driver: overlay


services:
    service1:
        image: localrepo/img1:v0.1
        privileged: true
        deploy:
            mode: replicated
            replicas: 1
            placement:
                constraints:
                    - node.hostname == home-desktop

        ports:
            - published: 8000
              target: 8000
              mode: host

        networks:
            swarm_network:

    service2:
        image: localrepo/img1:v0.1 
        privileged: true
        deploy:
            mode: replicated
            replicas: 1

        ports:
            - published: 7000
              target: 7000
              mode: host

        networks:
            swarm_network:

    nodeViewer:
      image: alexellis2/visualizer-arm:latest
      ports:
        - "8080:8080"
      volumes:
        - "/var/run/docker.sock:/var/run/docker.sock"
      deploy:
        placement:
          constraints: [node.role == manager]
      networks:
        - swarm_network

Answer 1

Thats because privileged is not supported in docker swarm. I had a similar docker compose running in privileged mode but while using it to docker swarm I removed them and was working well.

That not exactly an error .For example if you use something like links or depends_on . You get similar warning message. These are just the warnings not errors.

This is how you actually check the error logs if there is any

docker service ls (to check running service) 

docker service logs servicename