The kubectl get nodes command is a powerful tool in Kubernetes that provides essential information about the nodes in your cluster. It retrieves the current state of all nodes and displays it in a tabular format, including details such as name, status, roles, age, version, internal IP, and external IP. This command is useful for troubleshooting, capacity planning, general cluster management tasks, and obtaining an overview of your cluster's nodes. Additionally, kubectl get nodes can be used to filter nodes based on specific labels assigned to them.