The thermal input plugin reports system temperatures periodically -- each second by default. Currently this plugin is only available for Linux.

The following tables describes the information generated by the plugin.



The name of the thermal zone, such as thermal_zone0


The type of the thermal zone, such as x86_pkg_temp


Current temperature in celsius

Configuration Parameters

The plugin supports the following configuration parameters:



Polling interval (seconds). default: 1


Polling interval (nanoseconds). default: 0


Optional name filter regex. default: None


Optional type filter regex. default: None

Getting Started

In order to get temperature(s) of your system, you can run the plugin from the command line or through the configuration file:

Command Line

$ bin/fluent-bit -i thermal -t my_thermal -o stdout -m '*'
Fluent Bit v1.x.x
* Copyright (C) 2019-2020 The Fluent Bit Authors
* Copyright (C) 2015-2018 Treasure Data
* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd

[2019/08/18 13:39:43] [ info] [storage] initializing...
[0] my_thermal: [1566099584.000085820, {"name"=>"thermal_zone0", "type"=>"x86_pkg_temp", "temp"=>60.000000}]
[1] my_thermal: [1566099585.000136466, {"name"=>"thermal_zone0", "type"=>"x86_pkg_temp", "temp"=>59.000000}]
[2] my_thermal: [1566099586.000083156, {"name"=>"thermal_zone0", "type"=>"x86_pkg_temp", "temp"=>59.000000}]

Some systems provide multiple thermal zones. In this example monitor only thermal_zone0 by name, once per minute.

$ bin/fluent-bit -i thermal -t my_thermal -p "interval_sec=60" -p "name_regex=thermal_zone0" -o stdout -m '*'
Fluent Bit v1.3.0
Copyright (C) Treasure Data

[2019/08/18 13:39:43] [ info] [storage] initializing...
[0] my_temp: [1565759542.001053749, {"name"=>"thermal_zone0", "type"=>"pch_skylake", "temp"=>48.500000}]
[0] my_temp: [1565759602.001661061, {"name"=>"thermal_zone0", "type"=>"pch_skylake", "temp"=>48.500000}]

Configuration File

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

    Name thermal
    Tag  my_thermal

    Name  stdout
    Match *

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