I did a droplet with Nginx, Node-red, and Mosquitto because I want to send MQTT message from a RaspberryPi to the droplet. I adjusted the Nginx based on this page: https://iotassistant.io/home-assistant/install-mqtt-websockets-on-nginx/ I configured Mosquitto as the DO tutorial was supposed. Nevertheless, I cannot reach the Mosquitto from my RaspberryPi. What can I do in order to send messages from RaspberryPi to the droplet?
Thanks for your help!
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Heya,
Just came across this answer and decided to write some general guidelines for anyone who comes across this in the future despite the old question.
Here are a few steps you can take:
1. Check your Mosquitto configuration: Make sure that you have MQTT over WebSockets enabled and that Mosquitto is configured to use the right port.
2. Check your Nginx configuration: Your Nginx server should be properly configured to proxy requests to Mosquitto. Confirm that the proxy_pass directive is pointing to your Mosquitto server.
3. Check your firewall settings: Ensure the necessary ports are opened in your firewall settings. By default, MQTT uses port 1883 for unsecured communication and port 8883 for secured communication.
Remember, it’s hard to solve this kind of problem without knowing the exact configuration settings you’re using. If you continue to experience problems, please share copies of your configuration files as well as any error messages you’re seeing.
For more resources on MQTT and WebSockets with DigitalOcean, you may take a look at these links:
How to Manage Droplets How to Install and Secure the Mosquitto MQTT Messaging Broker
Hope that this helps!
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