The HTTP input plugin allows you to send custom records to an HTTP endpoint.

Configuration Parameters





The address to listen on


The port for Calyptia Fluent Bit to listen on



Specify the key name to overwrite a tag. If set, the tag will be overwritten by a value of the key.


Specify the maximum buffer size in KB to receive a JSON message.



This sets the chunk size for incoming incoming JSON messages. These chunks are then stored/managed in the space available by buffer_max_size.



It allows to set successful response code. 200, 201 and 204 are supported.



Add an HTTP header key/value pair on success. Multiple headers can be set. Example: X-Custom custom-answer

Getting Started

The http input plugin allows Calyptia Fluent Bit to open up an HTTP port that you can then route data to in a dynamic way. This plugin supports dynamic tags which allow you to send data with different tags through the same input. An example video and curl message can be seen below

Link to video

How to set tag

The tag for the HTTP input plugin is set by adding the tag to the end of the request URL. This tag is then used to route the event through the system. For example, in the following curl message below the tag set is app.log**. **If you do not set the tag http.0 is automatically used. If you have multiple HTTP inputs then they will follow a pattern of http.N where N is an integer representing the input.

How to set multiple custom HTTP header on success

The success_header parameter allows to set multiple HTTP headers on success. The format is:

    name http
    success_header X-Custom custom-answer
    success_header X-Another another-answer

Example Curl message

curl -d @app.log -XPOST -H "content-type: application/json" http://localhost:8888/app.log

Configuration File

    name http
    port 8888

    name stdout
    match *

Command Line

$> calyptia-fluent-bit -i http -p port=8888 -o stdout

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