Merge pull request #30014 from awanlin/docs/kubernetes-dependson

[Docs] Kubernetes - Catalog cluster locator `dependsOn`

docs/features/kubernetes/configuration.md

@@ -203,6 +203,28 @@ or the
 [`AwsEKSClusterProcessor`](https://backstage.io/docs/reference/plugin-catalog-backend-module-aws.awseksclusterprocessor/)
 to automatically update the set of clusters tracked by Backstage.
 
+For this method to work any entity that would be using this `Resource` to help drive the Kubernetes details in the Catalog's Entity pages needs to have a `dependsOn` relationship setup. Here's a quick example:
+
+```yaml
+apiVersion: backstage.io/v1alpha1
+kind: Component
+metadata:
+  annotations:
+    backstage.io/kubernetes-id: dice-roller
+    backstage.io/kubernetes-namespace: default
+  name: dice-roller
+  description: It rolls dice
+  tags:
+    - go
+spec:
+  type: service
+  lifecycle: production
+  owner: guest
+  dependsOn: ['resource:my-cluster']
+```
+
+This example assumes it's using the default namespace, if that's not the case for you then make sure to include it like this: `resource:my-namespace/my-cluster`.
+
 #### `config`
 
 This cluster locator method will read cluster information from your app-config