Useful kubectl commands not in the kubectl Cheat Sheet:
List all nodes and their external IP
kubectl get nodes -o jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.addresses[?(@.type=="ExternalIP")].address}{"\n"}{end}'
List all running Pods and their IP
kubectl get pods --all-namespaces -o jsonpath='{range .items[?(@.status.phase=="Running")]}{.metadata.name}{"\t"}{.status.podIP}{"\n"}{end}'