I have the following setup: -
RPi 4 with 4GB ram
Ubuntu 20:04 server
Docker version 19.03.11, build 42e35e6
I've got everything contained in docker
containers created via docker-compose
.
The problem I have is when I configure the host
in the node-red node-red-contrib-redis
instance
node I get this message:
pbu_node-red | [ioredis] Unhandled error event: Error: connect ECONNREFUSED 127.0.0.1:6379
pbu_node-red | at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1107:14)
I've created the node-red image myself using this Dockerfile
FROM nodered/node-red
RUN echo 'Installing required nodes...'
WORKDIR /usr/src/node-red
RUN npm install node-red-contrib-redis
RUN npm install node-red-contrib-influxdb
The redis
image is straight from Docker Hub. I know Docker creates its own network when you deploy the containers via docker-compose
and I believe the hostname I should have in the redis instance is redis:6379
. Unfortunately this gives the same error.
My docker-compose
file looks like this:
ersion: '3.7'
services:
redis:
container_name: pbu_redis
image: djtbrit/redis
# ports:
# - "6379:6379"
networks:
- pbu-net
# environment:
# - REDIS_URL=redis://redis:6379/0
volumes:
- redis-data
influx:
container_name: pbu_influx
image: influxdb
ports:
- "8086:8086"
networks:
- pbu-net
volumes:
- infux-data
grafana:
container_name: pbu_grafana
image: grafana/grafana
ports:
- "80:3000"
networks:
- pbu-net
depends_on:
- redis
- influx
volumes:
- grafana-data:/var/lib/grafana
node-red:
container_name: pbu_node-red
image: djtbrit/node-red
environment:
- TZ=UTC/UTC
- REDIS_URL=redis://redis:6379/0
ports:
- "1880:1880"
volumes:
- node-red-data
links:
- redis
networks:
- pbu-net
depends_on:
- redis
- influx
volumes:
node-red-data:
redis-data:
influx-data:
grafana-data:
I've spent many days trying to resolve this and I'm not progressing at all...
Any help gratefully received.