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Dummy

The dummy input plugin, generates dummy events. It is useful for testing, debugging, benchmarking and getting started with Fluent Bit.

Configuration Parameters

The plugin supports the following configuration parameters:

Key Description Default
Dummy Dummy JSON record. {"message":"dummy"}
Metadata Dummy JSON metadata. {}
Start_time_sec Dummy base timestamp, in seconds. 0
Start_time_nsec Dummy base timestamp, in nanoseconds. 0
Rate Rate at which messages are generated expressed in how many times per second. 1
Interval_sec Set time interval, in seconds, at which every message is generated. If set, Rate configuration is ignored. 0
Interval_nsec Set time interval, in nanoseconds, at which every message is generated. If set, Rate configuration is ignored. 0
Samples If set, the events number will be limited. For example, if Samples=3, the plugin generates only three events and stops. none
Copies Number of messages to generate each time they are generated. 1
Flush_on_startup If set to true, the first dummy event is generated at startup. false
Threaded Indicates whether to run this input in its own thread. false

Getting Started

You can run the plugin from the command line or through the configuration file:

Command Line

$ fluent-bit -i dummy -o stdout
Fluent Bit v2.x.x
* Copyright (C) 2015-2022 The Fluent Bit Authors
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
* https://fluentbit.io

[0] dummy.0: [[1686451466.659962491, {}], {"message"=>"dummy"}]
[0] dummy.0: [[1686451467.659679509, {}], {"message"=>"dummy"}]

Configuration File

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

{% tabs %} {% tab title="fluent-bit.conf" %}

[INPUT]
    Name   dummy
    Dummy {"message": "custom dummy"}

[OUTPUT]
    Name   stdout
    Match  *

{% endtab %}

{% tab title="fluent-bit.yaml" %}

pipeline:
  inputs:
    - name: dummy
      dummy: '{"message": "custom dummy"}'
  outputs:
    - name: stdout
      match: '*'

{% endtab %} {% endtabs %}