[docker] compose 포트 겹치는 문제

services:
  redis:
    image: bitnami/redis:latest
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    deploy:
      mode: replicated
      replicas: 3
    ports:
      - 6300-6400:6379

$ docker compose up -d
[+] Running 1/4
⠿ Network composetest_default Created 0.0s
⠿ Container composetest-redis-3 Starting 0.1s
⠿ Container composetest-redis-1 Starting 0.1s
⠿ Container composetest-redis-2 Starting 0.1s
Error response from daemon: Ports are not available: exposing port TCP 0.0.0.0:6300 -> 0.0.0.0:0: listen tcp 0.0.0.0:6300: bind: address already in use

$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8cb371485fba bitnami/redis:latest "/opt/bitnami/script…" 8 seconds ago Up 7 seconds 0.0.0.0:6300->6379/tcp composetest-redis-3

(도커 20.10.20, compose 2.12.1 기준)

지금 docker compose엔 버그가 있습니다. 포트를 여러개 지정해서 여러 컨테이너를 띄우려고 하면 포트가 겹쳐서 컨테이너가 안뜨는 문제가 있습니다.

단시간에 버그가 수정되진 않을 것 같네요. 이슈가 몇년동안 열려있기도 했고.. 임시방편으로는 그냥 복붙해서 여러개 띄우기밖에 없는듯 하네요

services:
  redis-1:
    image: bitnami/redis:latest
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6300:6379
 
   redis-2:
    image: bitnami/redis:latest
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6301:6379

  redis-3:
    image: bitnami/redis:latest
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6302:6379

  redis-4:
    image: bitnami/redis:latest
    environment:
      - ALLOW_EMPTY_PASSWORD=yes
    ports:
      - 6303:6379

너무 불편해서.. 시간나면 고쳐보고 싶네요.

 

Issues

- https://github.com/docker/compose/issues/8530

- https://github.com/docker/compose/issues/7188