docker-compose.yml

version: '3.8'

services:
  #################################
  #   Postgres coordinator node   #
  #################################
  coordinator:
    image: lucasfs/pg-sharding-coordinator
    environment: 
      &conf-envs
      POSTGRES_USER: "postgres"
      POSTGRES_PASSWORD: "postgres"
      POSTGRES_DB: "db_test"
      TASK_SLOT: "{{.Task.Slot}}"
      FDW_FETCH_SIZE: 100
      FDW_BATCH_SIZE: 100
    deploy:
      restart_policy:
        condition: on-failure
        max_attempts: 3
        window: 120s
      placement:
        max_replicas_per_node: 1
        constraints:
          - node.labels.type == coordinator
    ports:
      - target: 5432
        published: 5432
        mode: host
    volumes:
      - /mnt/storage/pgdata:/var/lib/postgresql/data
    networks:
      - cluster_net

  #################################
  #      Postgres shard node      #
  #################################
  shard:
    image: lucasfs/pg-sharding-shard
    environment: 
      << : *conf-envs
      COORDINATOR_SERVICE: "coordinator"
    deploy:
      restart_policy:
        condition: on-failure
        max_attempts: 3
        window: 120s
      placement:
        max_replicas_per_node: 1
        constraints:
          - node.labels.type == shard
    ports:
      - target: 5432
        published: 5432
        mode: host
    volumes:
      - /mnt/storage/pgdata:/var/lib/postgresql/data
    networks:
      - cluster_net

networks:
  cluster_net:
    external: true
    name: pg-net