I'm running node-red in a cloud server. All mqtt nodes show a yellow "connecting" label, but they never achieve the connection. How can I find the problem?

Hi all! Finally I changed in the mosquitto broker.conf file, in the certificates section, in the cafile line, chain.pem with fullchain.pem, I restarted mosquitto and it worked! I guess I had an obsolete indication... Thanks to all of you!

Find where your mqqt broker is, then compare this with your NR config

The mqtt broker is in the same cloud server Plus I get a message in the console, from node-red: [info] [mqtt-broker:5e25a454.56e434] Connection failed to broker: node-red@mqtt://localhost:1883 Don't know what to compare

You've not really told us anything about the environment so we can't really help.

Sorry, I'm trying to set up an iot platform, so I got a cloud server, using ubuntu 18.04 with apache server, a db, a mosquitto mqtt server and node-red. I built a node red flow with several input and output to mqtt, and it puts a tag every 15 seconds, that is when it gives the [info] message above. …

Verify connection to mqtt broker with some other tool/client are you sure mqtt broker is running and listening? port, ip, userid+pw, tls??? show your flow/config of mqtt connection

Can you show a bit more of the log please.

Also please export the three mqtt nodes and paste them here, using the </> button at the top of the forum entry window when pasting it in.

What version of Mosquitto broker are you using ? Are you using authorization as @krambriw asked ? According to this post on Github (0,5) is related to authorization.

This is the full log, it keeps repeating every 15'

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Mqtt nodes not connecting

General

ega 11 January 2021 16:10 7

1610380939: Socket error on client , disconnecting.
1610380954: New connection from 127.0.0.1 on port 1883.
1610380954: Sending CONNACK to 127.0.0.1 (0, 5)
This is mosquitto log
And the flow:

Topic		Replies	Views
MQTT-In Not Connecting General	69	9075	7 November 2019
Unable to connect broker:mqtt and node-red General mqtt	7	1011	18 May 2022
Mqtt-in node not connecting to broker General	12	4208	6 August 2021
MQTT Connection lost by node-red General	19	2554	11 March 2021
Mqtt node not connecting General	10	5121	17 October 2019

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Mqtt nodes not connecting

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