FEATURE STATE: Kubernetes v1.31 [stable] (enabled by default: true) This document shows you how to use the Pod failure policy, in combination with the default Pod backoff failure policy, to improve the control over the handling of container- or Pod-level failure within a Job. The definition of Pod failure policy may help you to: better utilize the computational resources by avoiding unnecessary Pod retries. avoid Job failures due to Pod disruptions (such preemption, API-initiated eviction or taint-based eviction).

Adding entries to a Pod's /etc/hosts file provides Pod-level override of hostname resolution when DNS and other options are not applicable. You can add these custom entries with the HostAliases field in PodSpec. The Kubernetes project recommends modifying DNS configuration using the hostAliases field (part of the .spec for a Pod), and not by using an init container or other means to edit /etc/hosts directly. Change made in other ways may be overwritten by the kubelet during Pod creation or restart.

Understand how to protect traffic within your cluster using Transport Layer Security (TLS).

Deploy the web UI (Kubernetes Dashboard) and access it.

This page provides details of version compatibility between the Kubernetes device plugin API, and different versions of Kubernetes itself. Compatibility matrix v1alpha1 v1beta1 Kubernetes 1.21 - ✓ Kubernetes 1.22 - ✓ Kubernetes 1.23 - ✓ Kubernetes 1.24 - ✓ Kubernetes 1.25 - ✓ Kubernetes 1.26 - ✓ Key: ✓ Exactly the same features / API objects in both device plugin API and the Kubernetes version. + The device plugin API has features or API objects that may not be present in the Kubernetes cluster, either because the device plugin API has added additional new API calls, or that the server has removed an old API call.

kubeadm upgrade apply phase Using the phases of kubeadm upgrade apply, you can choose to execute the separate steps of the initial upgrade of a control plane node. phase preflight control-plane upload-config kubelet-config bootstrap-token addon post-upgrade Synopsis Use this command to invoke single phase of the "apply" workflow kubeadm upgrade apply phase [flags] Options -h, --help help for phase Options inherited from parent commands --rootfs string The path to the 'real' host root filesystem.

Production-Grade Container Orchestration

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.

Synopsis View the latest last-applied-configuration annotations by type/name or file. The default output will be printed to stdout in YAML format. You can use the -o option to change the output format. kubectl apply view-last-applied (TYPE [NAME | -l label] | TYPE/NAME | -f FILENAME) Examples # View the last-applied-configuration annotations by type/name in YAML kubectl apply view-last-applied deployment/nginx # View the last-applied-configuration annotations by file in JSON kubectl apply view-last-applied -f deploy.

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: