docker-compose.yml

version: "2"
services:
  lb:
    container_name: lb
    image: haproxy:1.6
    ports:
      - 8090:8080
      - 5432:5432
      - 5433:5433
    links:
      - pg1
      - pg2
      - pg3
    volumes:
      - ./haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg
  pg1:
    container_name: pg1
    image: postgresql:9.5
  pgcheck1:
    image: camptocamp/pgcheck
    container_name: pgcheck1
    network_mode: "service:pg1"
    restart: always
  pg2:
    container_name: pg2
    image: postgresql:9.5
    environment:
      - PG_REPLICA=true
    restart: always
  pgcheck2:
    image: camptocamp/pgcheck
    container_name: pgcheck2
    network_mode: "service:pg2"
    restart: always
  pg3:
    container_name: pg3
    image: postgresql:9.5
    environment:
      - PG_REPLICA=true
    restart: always
  pgcheck3:
    image: camptocamp/pgcheck
    container_name: pgcheck3
    network_mode: "service:pg3"
    restart: always