Exec - Fluent Bit: Official Manual

The exec input plugin, allows to execute external program and collects event logs.
Configuration Parameters
The plugin supports the following configuration parameters:
Key
Description
Command
The command to execute.
Parser
Specify the name of a parser to interpret the entry as a structured message.
Interval_Sec
Polling interval (seconds).
Interval_NSec
Polling interval (nanosecond).
Buf_Size
Size of the buffer (check unit sizes for allowed values)
Getting Started
You can run the plugin from the command line or through the configuration file:
Command Line
The following example will read events from the output of ls.
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$ fluent-bit -i exec -p 'command=ls /var/log' -o stdout
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Fluent Bit v1.x.x
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* Copyright (C) 2019-2020 The Fluent Bit Authors
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* Copyright (C) 2015-2018 Treasure Data
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* Fluent Bit is a CNCF sub-project under the umbrella of Fluentd
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* https://fluentbit.io
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​
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[2018/03/21 17:46:49] [ info] [engine] started
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[0] exec.0: [1521622010.013470159, {"exec"=>"ConsoleKit"}]
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[1] exec.0: [1521622010.013490313, {"exec"=>"Xorg.0.log"}]
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[2] exec.0: [1521622010.013492079, {"exec"=>"Xorg.0.log.old"}]
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[3] exec.0: [1521622010.013493443, {"exec"=>"anaconda.ifcfg.log"}]
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[4] exec.0: [1521622010.013494707, {"exec"=>"anaconda.log"}]
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[5] exec.0: [1521622010.013496016, {"exec"=>"anaconda.program.log"}]
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[6] exec.0: [1521622010.013497225, {"exec"=>"anaconda.storage.log"}]
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Configuration File
In your main configuration file append the following Input & Output sections:
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[INPUT]
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    Name          exec
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    Tag           exec_ls
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    Command       ls /var/log
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    Interval_Sec  1
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    Interval_NSec 0
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    Buf_Size      8mb
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​
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[OUTPUT]
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    Name   stdout
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    Match  *
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Contents

Configuration Parameters

Getting Started

Command Line

Configuration File