The disk input plugin, gathers the information about the disk throughput of the running system every certain interval of time and reports them.
The plugin supports the following configuration parameters:
| Key | Description |
|---|---|
| Interval_Sec | Polling interval (seconds). default: 1 |
| Interval_NSec | Polling interval (nanosecond). default: 0 |
| Dev_Name | Device name to limit the target. (e.g. sda). If not set, in_disk gathers information from all of disks and partitions. |
In order to get disk usage from your system, you can run the plugin from the command line or through the configuration file:
$ fluent-bit -i disk -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
[2017/01/28 16:58:16] [ info] [engine] started
[0] disk.0: [1485590297, {"read_size"=>0, "write_size"=>0}]
[1] disk.0: [1485590298, {"read_size"=>0, "write_size"=>0}]
[2] disk.0: [1485590299, {"read_size"=>0, "write_size"=>0}]
[3] disk.0: [1485590300, {"read_size"=>0, "write_size"=>11997184}]In your main configuration file append the following Input & Output sections:
[INPUT]
Name disk
Tag disk
Interval_Sec 1
Interval_NSec 0
[OUTPUT]
Name stdout
Match *Note: Total interval (sec) = Interval_Sec + (Interval_Nsec / 1000000000).
e.g. 1.5s = 1s + 500000000ns