Redis runs in a seperate container which has seperate virtual ethernet adapter and IP address to the container your node application is running in. You need to link the two containers or create a user defined network for them
docker network create redis
docker run -d --net "redis" --name redis redis
docker run -d -p 8100:8100 --net "redis" --name node redis-node
Then specify the host redis
when connecting in node so the redis client attempts to connect to the redis
container rather than the default of localhost
const redis = require('redis')
const client = redis.createClient(6379, 'redis')
client.on('connect', () => console.log('Connected to Redis') )
Docker Compose can help with the definition of multi container setups.
version: '2'
services:
node:
build: .
ports:
- "8100:8100"
networks:
- redis
redis:
image: redis
networks:
- redis
networks:
redis:
driver: bridge