hmdm mqtt seems not started

Question

I deployed an HMDM version in a personalized Docker environment. I can successfully add users and manually pull applications. Any modifications I make to a user are applied to their device when I click the "Pull" button on the agent.

However, I am concerned about the automatic content pull for users. When I make a modification, I expect it to be automatically applied to the user's device, but nothing happens.

Upon checking the logs, I found a timeout error related to MQTT:
Scheduling MQTT reconnection in 900 sec.

I investigated the container where the HMDM solution is installed, and it seems like port 31000 is not available. When I attempt a telnet localhost 31000, I receive no response.

My questions are:

1. Is the MQTT service always expected to listen on port 31000?
2. Is this MQTT service started automatically when the application is deployed?

Answer 1

MQTT service listens on port 31000 and starts automatically when the application is deployed.

If you're using Docker Compose, the open (forwarded) ports are specified in docker-compose.yaml:

services: hmdm: ports: - 31000:31000

If you don't see the line specifying the port forwarding, compare your setup with the original Docker repository: https://github.com/h-mdm/hmdm-docker).

If you have issues with MQTT, consider switching to HTTP polling in the configuration details.

Comments

Thank you. I found a solution.
The mqtt was not finding the ip on which it should be exposed.
Thank you.