docker-compose.yaml

services:
  # 啟動3個mongo container用以建置Replica Set
  KiwiRS-mongo1:
    hostname: KiwiRS-mongo1
    image: mongo:${MONGO_IMAGE_VERSION}
    expose:
      - 27017
    ports:
      - ${MONGO1_HOST_PORT}:27017
    restart: always
    command: mongod --replSet my-mongo-set
    volumes:
      - ${MONGO1_DATA_STORAGE}:/data/db
      - ${MONGO1_CONFIG_STORAGE}:/data/configdb
  KiwiRS-mongo2:
    hostname: KiwiRS-mongo2
    image: mongo:${MONGO_IMAGE_VERSION}
    expose:
      - 27017
    ports:
      - ${MONGO2_HOST_PORT}:27017
    restart: always
    command: mongod --replSet my-mongo-set
    volumes:
      - ${MONGO2_DATA_STORAGE}:/data/db
      - ${MONGO2_CONFIG_STORAGE}:/data/configdb
  KiwiRS-mongo3:
    hostname: KiwiRS-mongo3
    image: mongo:${MONGO_IMAGE_VERSION}
    expose:
      - 27017
    ports:
      - ${MONGO3_HOST_PORT}:27017
    restart: always
    command: mongod --replSet my-mongo-set
    volumes:
      - ${MONGO3_DATA_STORAGE}:/data/db
      - ${MONGO3_CONFIG_STORAGE}:/data/configdb

  # 初始化Mongo Replica Server
  mongoinit:
    image: mongo:${MONGO_IMAGE_VERSION}
    # 這個Container只會執行一次
    # 此Container可能會依據mongo1~3的啟動狀態受到一定程度的影響
    # 啟動後記得查看此Container的Log，看到{ "ok" : 1 }才算成功!
    restart: "on-failure"
    depends_on:
      - KiwiRS-mongo1
      - KiwiRS-mongo2
      - KiwiRS-mongo3
    command: >
      mongo --host KiwiRS-mongo1:27017 --eval 'config = { "_id" : "my-mongo-set", "members" : [
        {
          "_id" : 0,
          "host" : "KiwiRS-mongo1:27017",
          "priority" : 1
        },
        {
          "_id" : 1,
          "host" : "KiwiRS-mongo2:27017",
          "priority" : 0.5
        },
        {
          "_id" : 2,
          "host" : "KiwiRS-mongo3:27017",
          "priority" : 0.5
        }
      ] }; rs.initiate(config);'