redis.exceptions.AuthenticationError: Client sent AUTH, but no password is set

[MohamedMostafa259]

I use this in my docker-compose.yml:

  # Redis (Results Backend & Cache)
  redis:
    image: redis:8.2.1-alpine
    ports:
      - "6379:6379"
    volumes:
      - redis-data:/data
    env_file:
      - ./env/.env.redis
    networks:
      - backend
    restart: always
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 1m30s
      timeout: 30s
      retries: 5
      start_period: 30s
    command: redis-server --appendonly yes --requirepass redis_password

ERROR:

> uvicorn src.main:app --reload --port 5000 --host 0.0.0.0
INFO:     Uvicorn running on http://0.0.0.0:5000 (Press CTRL+C to quit)
INFO:     Started reloader process [5596] using WatchFiles
INFO:     Started server process [11628]
INFO:     Waiting for application startup.
INFO:     Application startup complete.
INFO:     127.0.0.1:57702 - "GET /api/v1/ping HTTP/1.1" 200 OK
INFO:     127.0.0.1:57702 - "POST /api/v1/projects/be09ca5cbaa14f0fa8a5ac9ffadcdad0/chunks HTTP/1.1" 500 Internal Server Error
ERROR:    Exception in ASGI application
During handling of the above exception, another exception occurred:

Traceback (most recent call last):
...
redis.exceptions.AuthenticationError: Client sent AUTH, but no password is set

Can anyone help?

---

More info about my setup:
.env.redis file:

REDIS_PASSWORD=redis_password
REDIS_APPENDONLY=yes 
REDIS_MAXMEMORY=512mb 
REDIS_MAXMEMORY_POLICY=allkeys-lru 
REDIS_PROTECTED_MODE=yes

redis url in .env file:

CELERY_RESULT_BACKEND_URL="redis://:redis_password@localhost:6379/0"

[Peter-Sh]

Hi @MohamedMostafa259!

redis:8.2.1-alpine definitely supports auth using --requirepass

What looks strange to me is that here

CELERY_RESULT_BACKEND_URL="redis://:redis_password@localhost:6379/0"

localhost is used but according to your config snippet above redis should be started on another host in the docker network, so it should be

CELERY_RESULT_BACKEND_URL="redis://:redis_password@redis:6379/0"

Also note that healthcheck may not work since redis-cli should use password, consider updating command to use password

    healthcheck:
      test: ["CMD", "redis-cli", "-a", "redis_password", "ping"]