Redis connection to 127.0.0.1:6379 failed using Docker - docker

Question

Hi i'm using docker compose to handle all of my configuration.
i have mongo, node, redis, and elastic stack.
But i can't get my redis connect to my node app.
Here is my docker-compose.yml
version: '2'
services:
mongo:
image: mongo:3.6
container_name: "backend-mongo"
ports:
- "27017:27017"
volumes:
- "./data/db:/data/db"
redis:
image: redis:4.0.7
ports:
- "6379:6379"
user: redis
adminmongo:
container_name: "backend-adminmongo"
image: "mrvautin/adminmongo"
ports:
- "1234:1234"
elasticsearch:
image: docker.elastic.co/elasticsearch/elasticsearch:6.1.1
container_name: "backend-elastic"
environment:
- cluster.name=docker-cluster
- bootstrap.memory_lock=true
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
ulimits:
memlock:
soft: -1
hard: -1
volumes:
- esdata1:/usr/share/elasticsearch/data
ports:
- 9200:9200
networks:
- esnet
web:
container_name: "backend-web"
build: .
ports:
- "8888:8888"
environment:
- MONGODB_URI=mongodb://mongo:27017/backend
restart: always
depends_on:
- mongo
- elasticsearch
- redis
volumes:
- .:/backend
- /backend/node_modules
volumes:
esdata1:
driver: local
networks:
esnet:
Things to notice:
The redis is already running ( I can ping the redis)
I don't have any services running on my host only from the container
Other containers (except redis) work well
I've tried this method below
const redisClient = redis.createClient({host: 'redis'});
const redisClient = redis.createClient(6379, '127.0.0.1');
const redisClient = redis.createClient(6379, 'redis');
I'm using
docker 17.12
xubuntu 16.04
How can i connect my app to my redis container?

Answer 1

adding
hostname: redis
under redis section fix this issue.
So it will be something like this,
redis:
image: redis:4.0.7
ports:
- "6379:6379"
command: ["redis-server", "--appendonly", "yes"]
hostname: redis