Connecting Redis localhost from Docker

Question

I have a Node.js application where I use Redis, I am trying to connect the Docker container and the locally running Redis.

Tried solutions:

1. vim /usr/local/etc/redis.conf

   Updated

   bind 127.0.0.1

   To

   bind 0.0.0.0

   Stopped the redis and start it again and tried running the docker

2. With the above thing tried running docker run -p 4000:8080 -p 6379:6379 -t node-app

Both above didn't worked getting the below error

Error: Redis connection to localhost:6379 failed - connect ECONNREFUSED 127.0.0.1:6379

Update: I am checking it on Mac.

Answer 1

If you use default networking ( --network="bridge" ), you could simply use the IP address of the gateway between the Docker host and the bridge network, ie 172.17.0.1 .Here is the documentation. This would work on all platforms, not only on a Mac.

Answer 2

In Dockerfile add this Docker v19.03

ENV REDIS_HOST "redis://host.docker.internal"

when i using it on node.js

const REDIS_HOST = process.env.REDIS_HOST ? process.env.REDIS_HOST : ""
const client = redis.createClient(REDIS_HOST)

Answer 3

"docker.for.mac.localhost"而不是localhost or '127.0.0.1'会起作用:)，它在 mac 机器上对我"docker.for.mac.localhost" 。

Answer 4

You just need to set the docker internal host in your node app's config.json file:

"redisHost": "host.docker.internal"

You don't need to change any Redis configuration on your local.