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Exec

The exec input plugin, allows to execute external program and collects event logs.

Container support

This plugin will not function in the distroless production images (AMD64 currently) as it needs a functional /bin/sh which is not present. The debug images use the same binaries so even though they have a shell, there is no support for this plugin as it is compiled out.

Configuration Parameters

The plugin supports the following configuration parameters:

Key

Description

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.

$ fluent-bit -i exec -p 'command=ls /var/log' -o stdout
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
* https://fluentbit.io

[2018/03/21 17:46:49] [ info] [engine] started
[0] exec.0: [1521622010.013470159, {"exec"=>"ConsoleKit"}]
[1] exec.0: [1521622010.013490313, {"exec"=>"Xorg.0.log"}]
[2] exec.0: [1521622010.013492079, {"exec"=>"Xorg.0.log.old"}]
[3] exec.0: [1521622010.013493443, {"exec"=>"anaconda.ifcfg.log"}]
[4] exec.0: [1521622010.013494707, {"exec"=>"anaconda.log"}]
[5] exec.0: [1521622010.013496016, {"exec"=>"anaconda.program.log"}]
[6] exec.0: [1521622010.013497225, {"exec"=>"anaconda.storage.log"}]

Configuration File

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

[INPUT]
    Name          exec
    Tag           exec_ls
    Command       ls /var/log
    Interval_Sec  1
    Interval_NSec 0
    Buf_Size      8mb
    Oneshot       false

[OUTPUT]
    Name   stdout
    Match  *