# This file can be used to setup a Dgraph cluster with 3 Dgraph Alphas and 1 Dgraph Zero node on a
# Docker Swarm with replication.
# It expects three virtual machines with hostnames aws01, aws02, and aws03 to be part of the swarm.
# There is a constraint to make sure that each Dgraph Alpha runs on a particular host.

# Data would be persisted to a Docker volume called data-volume on the virtual machines which are
# part of the swarm.
# Run `docker stack deploy -c docker-compose-multi.yml` on the Swarm leader to start the cluster.
# NOTE: whitelisting is set to private address ranges, this is ONLY for a local setup
#       please change it accordingly for your production setup
#       more here https://dgraph.io/docs/deploy/dgraph-administration/#whitelisting-admin-operations

version: "3.2"
networks:
  dgraph:
services:
  zero:
    image: dgraph/dgraph:latest
    volumes:
      - data-volume:/dgraph
    ports:
      - 5080:5080
      - 6080:6080
    networks:
      - dgraph
    deploy:
      placement:
        constraints:
          - node.hostname == aws01
    command: dgraph zero --my=zero:5080 --replicas 3
  alpha1:
    image: dgraph/dgraph:latest
    hostname: "alpha1"
    volumes:
      - data-volume:/dgraph
    ports:
      - 8080:8080
      - 9080:9080
    networks:
      - dgraph
    deploy:
      placement:
        constraints:
          - node.hostname == aws01
    command: dgraph alpha --my=alpha1:7080 --security whitelist=10.0.0.0/8,172.0.0.0/8,192.168.0.0/16,127.0.0.1 --zero=zero:5080
  alpha2:
    image: dgraph/dgraph:latest
    hostname: "alpha2"
    volumes:
      - data-volume:/dgraph
    ports:
      - 8081:8081
      - 9081:9081
    networks:
      - dgraph
    deploy:
      replicas: 1
      placement:
        constraints:
          - node.hostname == aws02
    command: dgraph alpha --my=alpha2:7081 --security whitelist=10.0.0.0/8,172.0.0.0/8,192.168.0.0/16,127.0.0.1 --zero=zero:5080 -o 1
  alpha3:
    image: dgraph/dgraph:latest
    hostname: "alpha3"
    volumes:
      - data-volume:/dgraph
    ports:
      - 8082:8082
      - 9082:9082
    networks:
      - dgraph
    deploy:
      replicas: 1
      placement:
        constraints:
          - node.hostname == aws03
    command: dgraph alpha --my=alpha3:7082 --security whitelist=10.0.0.0/8,172.0.0.0/8,192.168.0.0/16,127.0.0.1 --zero=zero:5080 -o 2
volumes:
  data-volume: