docker-compose.yml

version: "3.7"

x-image:
  &mongo-image
  mongo:${MONGODB_IMAGE_VERSION:-latest}

services:
  mongo1:
    image: *mongo-image
    container_name: mongo1
    networks:
      default:
        aliases:
          - "${MONGO1_HOST:?err}"
    environment:
      - MONGO1_HOST=${MONGO1_HOST:?err}
      - MONGO2_HOST=${MONGO2_HOST:?err}
      - MONGO3_HOST=${MONGO3_HOST:?err}
      - MONGO1_PORT=${MONGO1_PORT:-27017}
      - MONGO2_PORT=${MONGO2_PORT:-27018}
      - MONGO3_PORT=${MONGO3_PORT:-27019}
    volumes:
      - ./docker-entrypoint-initdb.d:/docker-entrypoint-initdb.d
      - ${DATA_PATH:-./.local}/data1/db:/data/db
      - ${DATA_PATH:-./.local}/data1/configdb:/data/configdb
    ports:
      - "${MONGO1_PORT:-27017}:${MONGO1_PORT:-27017}"
    command: [ "--port", "${MONGO1_PORT:-27017}", "--replSet", "local" ]
  mongo2:
    image: *mongo-image
    container_name: mongo2
    networks:
      default:
        aliases:
          - "${MONGO2_HOST:?err}"
    volumes:
      - ${DATA_PATH:-./.local}/data2/db:/data/db
      - ${DATA_PATH:-./.local}/data2/configdb:/data/configdb
    ports:
      - "${MONGO2_PORT:-27018}:${MONGO2_PORT:-27018}"
    command: [ "--port", "${MONGO2_PORT:-27018}", "--replSet", "local" ]
  mongo3:
    image: *mongo-image
    container_name: mongo3
    networks:
      default:
        aliases:
          - "${MONGO3_HOST:?err}"
    volumes:
      - ${DATA_PATH:-./.local}/data3/db:/data/db
      - ${DATA_PATH:-./.local}/data3/configdb:/data/configdb
    ports:
      - "${MONGO3_PORT:-27019}:${MONGO3_PORT:-27019}"
    command: [ "--port", "${MONGO3_PORT:-27019}", "--replSet", "local" ]

networks:
  default:
    ipam:
      config:
        - subnet: ${MONGODB_SUBNET_CIDR:-172.33.0.0/16}