docker-compose redis connection issue

Question

I have been trying to dockerize an api . But redis crashes. Nodejs and mongodb work.

Docker-compose.yaml file

version: '3'
services:

  mongo:
    container_name: mongo
    image: mongo
    networks:
      - webnet
    ports:
      - '27017:27017'
  redis: 
    image: redis
    container_name: redis
    command: ["redis-server","--bind","redis","--port","6379"]
    ports:
      - '6379:6379'
    hostname: redis

  app:
    container_name: password-manager-docker
    restart: always
    build: .
    networks:
      - webnet
    ports:
      - '80:5000'
    links: 
      - mongo
      - redis
    environment: 
      MONGODB_URI: ${MONGODB_URI}
      clientID: ${clientID}
      clientSecret : ${clientSecret}
      PORT: ${PORT}
      NODE_ENV : ${NODE_ENV}
      JWT_SECRET_KEY: ${JWT_SECRET_KEY}
      JWT_EXPIRE: ${JWT_EXPIRE}
      REFRESH_TOKEN: ${REFRESH_TOKEN}
      JWT_REFRESH_SECRET_KEY: ${JWT_REFRESH_SECRET_KEY}
      JWT_REFRESH_EXPIRE: ${JWT_REFRESH_EXPIRE}
      JWT_COOKIE: ${JWT_COOKIE}
       
networks:
  webnet:

Docker file

FROM node:latest

WORKDIR /usr/src/app

COPY package*.json ./

RUN npm install 

COPY . .

EXPOSE 5000

CMD ["npm","start"]

The error is Redis connection to 127.0.0.1:6379 failed - connect ECONNREFUSED 127.0.0.1:6379. How can I fix this ?

From the application try to connect to redis:6379 instead of 127.0.0.1 — Krzysztof Safjanowski
I've tried. But the same error.Redis connection to 6379 failed — Oğulcan Karayel
Maybe other service is occupying that port? What is the result of ‘docker ps’? — Krzysztof Safjanowski
There are 3 container and ports 0.0.0.0:80->5000/tcp ,0.0.0.0:6379->6379/tcp (redis container) ,0.0.0.0:27017->27017/tcp — Oğulcan Karayel
You are overriding the default CMD for redis with command. It should work out-of-the-box if you don't mess with the command that is used for starting the container. — Marko E

Carlos Carlos · Accepted Answer · 2020-08-29T12:43:17

by default all containers in a compose file will join a default network where they can communicate with each other, but if you specify a network then you have to specify it for all. So you can either remove the network declaration from the app and mongo services or specify it on the redis service.

docker-compose redis connection issue

1 Answers