Connect nestjs to redis using Docker Compose

Question

I am trying to connect my Nestjs application to Redis as follows:

This the content of my docker-compose.yml

version: '3.7'

services:
  main:
    container_name: main
    build:
      context: .
      target: development
    volumes:
      - .:/usr/src/app
      - /usr/src/app/node_modules
    ports:
      - ${PORT}:${PORT}
      - 9229:9229
    command: yarn start:dev
    env_file:
      - .env

    networks:
      - webnet
  redis:
    image: 'redis:alpine'

networks:
  webnet:

In order to boostrap redis functionality in my nestjs application, I am using nestjs-redis and the relevant portion of app.module.ts looks like this:

import { RedisModule } from 'nestjs-redis';

@Module({
 imports: [
  RedisModule.register({})
 ]
})

However, when I try to run docker-compose up in my setup, I get the following error:

[ioredis] Unhandled error event: Error: connect ECONNREFUSED 127.0.0.1:6379

Thank you for helping!

nischay goyal · Accepted Answer · 2020-06-01 09:24:52Z

3

As you are using docker-compose.yml, try to use the internal links capability.

version: '3.7'

services:
  main:
    container_name: main
    build:
      context: .
      target: development
    volumes:
      - .:/usr/src/app
      - /usr/src/app/node_modules
    ports:
      - ${PORT}:${PORT}
      - 9229:9229
    command: yarn start:dev
    links:
      - redis
    env_file:
      - .env
    networks:
      - webnet
  redis:
    image: 'redis:alpine'
    ports:
      - 6379:6379
    networks:
      - webnet

networks:
  webnet:

and in your snippet, pass the host in the following manner

import { RedisModule } from 'nestjs-redis';

@Module({
 imports: [
  RedisModule.register({host: "redis"})
 ]
})

edited Jun 1, 2020 at 9:24

answered Jun 1, 2020 at 9:09

nischay goyal

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2 Comments

Jacobdo Over a year ago

I've done the changes you outlined, the error message changes to [ioredis] Unhandled error event: Error: getaddrinfo ENOTFOUND redis, however, if I set the host to localhost in app.module.ts, it goes back to the original error message.

nischay goyal Over a year ago

Just added the network in redis section as well and can you try now?

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