Scenario to fill up a given PersistenVolumeClaim by creating a temp file on the PVC from a pod associated with it. The purpose of this scenario is to fill up a volume to understand faults caused by the application using this volume.
pvc_scenario:
pvc_name: <pvc_name> # Name of the target PVC.
pod_name: <pod_name> # Name of the pod where the PVC is mounted. It will be ignored if the pvc_name is defined.
namespace: <namespace_name> # Namespace where the PVC is.
fill_percentage: 50 # Target percentage to fill up the cluster. Value must be higher than current percentage. Valid values are between 0 and 99.
duration: 60 # Duration in seconds for the fault.
- Get the pod name where the PVC is mounted.
- Get the volume name mounted in the container pod.
- Get the container name where the PVC is mounted.
- Get the mount path where the PVC is mounted in the pod.
- Get the PVC capacity and current used capacity.
- Calculate file size to fill the PVC to the target fill_percentage.
- Connect to the pod.
- Create a temp file
kraken.tmp
with random data on the mount path:dd bs=1024 count=$file_size </dev/urandom > /mount_path/kraken.tmp
- Wait for the duration time.
- Remove the temp file created:
rm kraken.tmp