kubeadm kubeconfig provides utilities for managing kubeconfig files. For examples on how to use kubeadm kubeconfig user see Generating kubeconfig files for additional users. kubeadm kubeconfig overview Kubeconfig file utilities Synopsis Kubeconfig file utilities. Options -h, --help help for kubeconfig Options inherited from parent commands --rootfs string The path to the 'real' host root filesystem. This will cause kubeadm to chroot into the provided path. kubeadm kubeconfig user This command can be used to output a kubeconfig file for an additional user.

Synopsis Unset an individual value in a kubeconfig file. PROPERTY_NAME is a dot delimited name where each token represents either an attribute name or a map key. Map keys may not contain dots. kubectl config unset PROPERTY_NAME Examples # Unset the current-context kubectl config unset current-context # Unset namespace in foo context kubectl config unset contexts.foo.namespace Options -h, --help help for unset --as string Username to impersonate for the operation.

Mechanisms for accessing metrics at node, volume, pod and container level, as seen by the kubelet.

Production-Grade Container Orchestration

Synopsis Reconciles rules for RBAC role, role binding, cluster role, and cluster role binding objects. Missing objects are created, and the containing namespace is created for namespaced objects, if required. Existing roles are updated to include the permissions in the input objects, and remove extra permissions if --remove-extra-permissions is specified. Existing bindings are updated to include the subjects in the input objects, and remove extra subjects if --remove-extra-subjects is specified.

Synopsis Dump cluster information out suitable for debugging and diagnosing cluster problems. By default, dumps everything to stdout. You can optionally specify a directory with --output-directory. If you specify a directory, Kubernetes will build a set of files in that directory. By default, only dumps things in the current namespace and 'kube-system' namespace, but you can switch to a different namespace with the --namespaces flag, or specify --all-namespaces to dump all namespaces.

Seccomp stands for secure computing mode and has been a feature of the Linux kernel since version 2.6.12. It can be used to sandbox the privileges of a process, restricting the calls it is able to make from userspace into the kernel. Kubernetes lets you automatically apply seccomp profiles loaded onto a node to your Pods and containers. Seccomp fields FEATURE STATE: Kubernetes v1.19 [stable] There are four ways to specify a seccomp profile for a pod:

FEATURE STATE: Kubernetes v1.32 [alpha] Kubernetes core components can expose a suite of z-endpoints to make it easier for users to debug their cluster and its components. These endpoints are strictly to be used for human inspection to gain real time debugging information of a component binary. Avoid automated scraping of data returned by these endpoints; in Kubernetes 1.32 these are an alpha feature and the response format may change in future releases.

Distributed systems often have a need for leases, which provide a mechanism to lock shared resources and coordinate activity between members of a set. In Kubernetes, the lease concept is represented by Lease objects in the coordination.k8s.io API Group, which are used for system-critical capabilities such as node heartbeats and component-level leader election. Node heartbeats Kubernetes uses the Lease API to communicate kubelet node heartbeats to the Kubernetes API server.

Using kubeadm, you can create a minimum viable Kubernetes cluster that conforms to best practices. In fact, you can use kubeadm to set up a cluster that will pass the Kubernetes Conformance tests. kubeadm also supports other cluster lifecycle functions, such as bootstrap tokens and cluster upgrades. The kubeadm tool is good if you need: A simple way for you to try out Kubernetes, possibly for the first time. A way for existing users to automate setting up a cluster and test their application.