kdiag

Diagnose and troubleshoot Kubernetes cluster problems using the kdiag CLI. This skill MUST be consulted for ANY Kubernetes operational issue: pods crashing or stuck Pending, deployments not rolling out, services unreachable, DNS failures, ingress not routing, node pressure or capacity problems, missing ConfigMaps/Secrets, network policy conflicts, and EKS-specific issues like VPC CNI errors, ENI/IP exhaustion, security groups, or VPC endpoint verification. Activate on ANY mention of debugging, diagnosing, or investigating problems in a Kubernetes cluster — even vague reports like "my app isn't working" or "something broke in prod" when Kubernetes is involved. Do NOT activate for writing new Kubernetes manifests/operators/Helm charts, setting up CI/CD, provisioning infrastructure with Terraform, or application code development.