Understanding Kubernetes GVK and GVR in 60 Seconds

1. GVK (Group, Version, Kind):

   • Group: The API group under which the resource is categorized (e.g., apps, core, etc.).

   • Version: The version of the API group (e.g., v1, v1beta1, etc.).

   • Kind: The specific type of resource within the API group (e.g., Pod, Deployment, Service).

Example:

• A Deployment in the apps group and version v1 has a GVK of apps, v1, Deployment.

• A Pod has a GVK of core, v1, Pod.

2. GVR (Group, Version, Resource):

   • Group: The API group under which the resource is categorized.

   • Version: The version of the API group.

   • Resource: The plural name of the resource as used in the URL path (e.g., pods, deployments, services).

Example:

• The API endpoint for Pods is /api/v1/pods, corresponding to GVR core, v1, pods.

• The API endpoint for Deployments is /apis/apps/v1/deployments, corresponding to GVR apps, v1, deployments.

Remember, GVK helps describe the type of a resource (often in YAML files), while GVR is crucial for interacting with the Kubernetes API.