Kernel Log Buffer

Last updated 2 months ago
The kmsg input plugin reads the Linux Kernel log buffer since the beginning, it gets every record and parse it field as priority, sequence, seconds, useconds, and message.
Getting Started
In order to start getting the Linux Kernel messages, you can run the plugin from the command line or through the configuration file:
Command Line
$ bin/fluent-bit -i kmsg -t kernel -o stdout -m '*'
Fluent-Bit v0.8.0
Copyright (C) Treasure Data
​
[0] kernel: [1463421823, {"priority"=>3, "sequence"=>1814, "sec"=>11706, "usec"=>732233, "msg"=>"ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = 34:a8:4e:d3:40:ec profile =20:3a:07:9e:4a:ac"}]
[1] kernel: [1463421823, {"priority"=>3, "sequence"=>1815, "sec"=>11706, "usec"=>732300, "msg"=>"ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = 34:a8:4e:d3:40:ec profile =20:3a:07:9e:4a:ac"}]
[2] kernel: [1463421829, {"priority"=>3, "sequence"=>1816, "sec"=>11712, "usec"=>729728, "msg"=>"ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = 34:a8:4e:d3:40:ec profile =20:3a:07:9e:4a:ac"}]
[3] kernel: [1463421829, {"priority"=>3, "sequence"=>1817, "sec"=>11712, "usec"=>729802, "msg"=>"ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = 34:a8:4e:d3:40:ec
...
As described above, the plugin processed all messages that the Linux Kernel reported, the output has been truncated for clarification.
Configuration File
In your main configuration file append the following Input & Output sections:
[INPUT]
    Name   kmsg
    Tag    kernel
​
[OUTPUT]
    Name   stdout
    Match  *
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