Fluent-bit MQTT Plugin

How to Integrate Fluent-bit MQTT Plugin with Apica Ascent

1. Introduction

This guide explains how to send MQTT Logs to Apica Ascent with Fluent-bit, and how to view them.

2. Configure the MQTT Plugin in Fluent-bit

Update your Fluent-bit.conf with an input and filter for the MQTT Plugin:

[INPUT]
    Name mqtt
    Tag  mqtt

[FILTER]
    Name          modify
    Match         mqtt
    Add namespace Fluent-bit
    Add app_name  MQTT

Restart Fluent-bit with systemctl restart fluent-bit and check the status with systemctl status fluent-bit to verify that it’s running correctly.

Helpful links:

• Official Plugin documentation.

• Set up Fluent-bit for Apica Ascent.

3. Verify Logs in Apica Ascent

1. Log in to Apica Ascent

2. Navigate to Explore → Logs & Insights

3. Look for the namespace and application name specified in the config file Example:

4. Example logs

Message:

{"app_name":"MQTT","date":1765794008.603475,"msg":"hello","namespace":"Fluent-bit","topic":"test"}

StructuredData :

_size: 98
date: 1765794008.603475
msg: hello
topic: test

5. Troubleshooting

Fluent-bit Troubleshooting

If you’re testing locally and something is blocking the default port you may need to listen on another one such as 1884