Fluent-bit HTTP Input Plugin

How to integrate Fluent-bit HTTP input plugin with Apica Ascent

1. Introduction

This guide explains how to send logs with the HTTP input plugin to Apica Ascent with Fluent-bit, and how to view them.

2. Configure the HTTP input Plugin in Fluent-bit

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

[INPUT]
    Name    http
    Listen  0.0.0.0
    Port    4318
    Tag     ascent_logs

[FILTER]
    Name   modify
    Match  ascent_logs
    Add    namespace Fluent-bit
    Add    app_name HTTP

You could use any free port, port 4318 is not required, it was chosen for this example.

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

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":"HTTP","date":1766477120.303412,"event":{"_size":"373","_src_application":"Exec","_src_namespace":"Fluent-bit","date":"1766477118.191342","exec":"syslog.6.gz","hostname":"localhost","message":"{\"This log has been exported from Apica Ascent\",\"date\":1766477118.191342,\"exec\":\"syslog.6.gz\",\"namespace\":\"Fluent-bit\"}","timestamp":"2025-12-23T08:05:19.208678196Z"},"host":"localhost","namespace":"Fluent-bit","severityString":"info","sourcetype":"_json","time":1766477119208,"timestamp":"2025-12-23T08:05:19Z"}

StructuredData :

_size: 529
date: 1766477120.303412
event._size: 373
event._src_application: Exec
event._src_namespace: Fluent-bit
event.date: 1766477118.191342
event.exec: syslog.6.gz
event.hostname: localhost
event.message: {"This log has been exported from Apica Ascent","date":1766477118.191342,"exec":"syslog.6.gz","namespace":"Fluent-bit"}
event.timestamp: 2025-12-23T08:05:19.208678196Z
sourcetype: _json

5. Troubleshooting

Fluent-bit Troubleshooting

If logs are not being sent verify that the port is open and that the server can receive data there.

Verify that the logs are in a format that the HTTP plugin can read such as json.