# KUBERNETES CLUSTERS - [Worker Node "NotReady" Issue](https://platform9.com/kb/pcd-ts/kubernetes-clusters/worker-node--notready--issue.md): Troubleshoot Node issues in a Kubernetes Cluster on Private Cloud Director v2025.4+. Resolve NotReady states or scaling problems with step-by-step procedures, including log retrieval and common causes - [Troubleshooting Calico Add-on](https://platform9.com/kb/pcd-ts/kubernetes-clusters/troubleshooting-calico-add-on.md): Troubleshoot Calico Add-on Issues for Private Cloud Director. Ensure your PCD-K cluster's network connectivity is stable by validating namespaces, pod health, and API server connectivity. Follow our g - [Troubleshooting CoreDNS Add-on](https://platform9.com/kb/pcd-ts/kubernetes-clusters/troubleshooting-calico-add-onq6m.md): Troubleshoot CoreDNS issues in PCD-K clusters effectively. Follow our guide for checking pod status, error states, and DNS service endpoints in Kubernetes. Ensure optimal DNS resolution and contact Pl - [Troubleshooting MetalLB Add-on](https://platform9.com/kb/pcd-ts/kubernetes-clusters/troubleshooting-calico-add-onq6mqlt.md): Troubleshoot MetalLB issues in PCD-K Kubernetes clusters with our guide. Learn to verify pod statuses, check IP address pools, validate endpoints, and identify common causes like misconfigured IP rang --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://platform9.com/kb/pcd-ts/kubernetes-clusters.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.