I'm trying to connect my containerized spring boot application with another containerized MQTT broker. Both of them are on their own projects as follows:
mqtt docker-compose.yml:
version: '3.9'
services:
mqttbroker:
container_name: mqttbroker
restart: always
volumes:
- ./config:/mosquitto/config
- ./data:/mosquitto/data
- ./log:/mosquitto/log
ports:
- 8883:8883
networks:
- mynetwork
volumes:
config:
data:
log:
mqtt Dockerfile
FROM eclipse-mosquitto
WORKDIR /mosquitto
COPY . .
EXPOSE 8883
And then the spring boot project is like:
spring boot docker-compose.yml
version: '3.8'
services:
myapp:
build: .
container_name: myapp
ports:
- '8082:8082'
stdin_open: true
tty: true
networks:
- mynetwork
In my application.properties I try to connect to the MQTT broker like:
mosquitto.url=tcp://mqttbroker:8883 and I get connection refused. However, if I run the spring boot application locally, I can connect to the docker container with mosquitto.url=tcp://localhost:8883.
I would rather have all the configurations in my docker-compose files to decrease manual codes.
I really appreciate your help in advance!