Splunk

The splunk input plugin handles Splunk HTTP HEC requests.

Configuration Parameters

Key	Description	default
listen	The address to listen on	0.0.0.0
port	The port for Fluent Bit to listen on	9880
tag_key	Specify the key name to overwrite a tag. If set, the tag will be overwritten by a value of the key.
buffer_max_size	Specify the maximum buffer size in KB to receive a JSON message.	4M
buffer_chunk_size	This sets the chunk size for incoming incoming JSON messages. These chunks are then stored/managed in the space available by buffer_max_size.	512K
successful_response_code	It allows to set successful response code. 200, 201 and 204 are supported.	201
splunk_token	Specify a Splunk token for HTTP HEC authentication. If multiple tokens are specified (with commas and no spaces), usage will be divided across each of the tokens.
store_token_in_metadata	Store Splunk HEC tokens in the Fluent Bit metadata. If set false, they will be stored as normal key-value pairs in the record data.	true
splunk_token_key	Use the specified key for storing the Splunk token for HTTP HEC. This is only effective when store_token_in_metadata is false.	@splunk_token
Threaded	Indicates whether to run this input in its own thread.	false

Getting Started

In order to start performing the checks, you can run the plugin from the command line or through the configuration file.

How to set tag

The tag for the Splunk input plugin is set by adding the tag to the end of the request URL by default. This tag is then used to route the event through the system. The default behavior of the splunk input sets the tags for the following endpoints:

• /services/collector

• /services/collector/event

• /services/collector/raw

The requests for these endpoints are interpreted as services_collector, services_collector_event, and services_collector_raw.

If you want to use the other tags for multiple instantiating input splunk plugin, you have to specify tag property on the each of splunk plugin configurations to prevent collisions of data pipeline.

Command Line

From the command line you can configure Fluent Bit to handle HTTP HEC requests with the following options:

$ fluent-bit -i splunk -p port=8088 -o stdout

Configuration File

In your main configuration file append the following Input & Output sections:

[INPUT]
    name splunk
    listen 0.0.0.0
    port 8088

[OUTPUT]
    name stdout
    match *