[Kubernetes Integration] Volume dashboard show if volume is persistent and to which pod it belongs

[herrBez]

As of now the Kubernetes Integration volume dashboard does not show the involved pods nor if the volume is persistent or not, which makes the Dashboard not very helpful for Kubernetes Administrators, which are not able to find the relevant pods and understand whether a restart could help in fixing the issue by looking at the dashboard:

This issue asks to add two/three columns to the visualization:

1. kubernetes.namespace kubernetes.pod.name: to identify which pod has the problem
2. kubernetes.persistentvolume.claim: to understand whether the volume is persistent or not

While the kubernetes.pod.name is already part of the documents of kubernetes volume dataset, the persistent volume claim information is not. To this extent the issue have been opened elastic/beats#38839.

[herrBez]

cc @elastic/obs-ds-hosted-services

[gizas]

Related to:

• Improve Metricbeat Kubernetes Volumes dashboard as currently it doesn't show useful information beats#39523
• Include volume type in volume metricset data from Kubernetes module beats#39524
• Include mount_point in Kubernetes volume metricset beats#39525