> For the complete documentation index, see [llms.txt](https://platform9.com/kb/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://platform9.com/kb/pcd-ts/kubernetes-clusters.md).

# 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


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