ComponentLabelKey is Kubernetes recommended label key, it represents the component within the architecture.

InstanceLabelKey is Kubernetes recommended label key, it represents a unique name identifying the instance of an application It's set by helm when installing a release.

ManagedByLabelKey is Kubernetes recommended label key, it represents the tool being used to manage the operation of an application For resources managed by SeaweedFS Operator, its value is always seaweedfs-operator.

NameLabelKey is Kubernetes recommended label key, it represents the name of the application.

PodName is to select pod by name https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/#pod-selector.

VersionLabelKey is Kubernetes recommended label key, it represents the version of the app.