IO Hog Scenarios using Krkn
To enable this plugin add the pointer to the scenario input file scenarios/kube/io-hog.yaml as described in the
Usage section.
io-hog options
In addition to the common hog scenario options, you can specify the below options in your scenario configuration to target specific pod IO
| Option | Type | Description |
|---|---|---|
io-block-size | string | the block size written by the stressor |
io-write-bytes | string | the total amount of data that will be written by the stressor. The size can be specified as % of free space on the file system or in units of Bytes, KBytes, MBytes and GBytes using the suffix b, k, m or g |
io-target-pod-folder | string | the folder where the volume will be mounted in the pod |
io-target-pod-volume | dictionary | the pod volume definition that will be stressed by the scenario. |
[!CAUTION] Modifying the structure of
io-target-pod-volumemight alter how the hog operates, potentially rendering it ineffective.
Usage
To enable hog scenarios edit the kraken config file, go to the section kraken -> chaos_scenarios of the yaml structure
and add a new element to the list named hog_scenarios then add the desired scenario
pointing to the hog.yaml file.
kraken:
...
chaos_scenarios:
- hog_scenarios:
- scenarios/kube/io-hog.yml