It has been more than two years since the Linux kernel cgroups v2 API was declared stable. Support for cgroups v2 Graduates to Stable Ephemeral containers graduated to Beta in Kubernetes v1.23, and with this release, the feature graduates to Stable. This is particularly useful for troubleshooting when you need to examine another container but cannot use kubectl exec because that container has crashed or its image lacks debugging utilities. Ephemeral Containers Graduate to StableĮphemeral Containers are containers that exist for only a limited time within an existing pod. If you are currently relying on PodSecurityPolicy, please follow the instructions for migration to Pod Security Admission. That replacement is Pod Security Admission, which graduates to Stable with this release. The updates required to improve its usability would have introduced breaking changes, so it became necessary to remove it in favor of a more friendly replacement.
PodSecurityPolicy was initially deprecated in v1.21, and with the release of v1.25, it has been removed. What's New (Major Themes) PodSecurityPolicy is removed Pod Security Admission graduates to Stable Inspired by our release lead's son, Albert Song, Kubernetes v1.25 is named for each and every one of you, no matter how you choose to contribute your unique power to the combined force that becomes Kubernetes.
Kubernetes v1.25 includes a staggering 40 enhancements, none of which would exist without the incredible power we have when we work together. With this release, we wish to honor the collaborative, open spirit that takes us from isolated developers, writers, and users spread around the globe to a combined force capable of changing the world. It is also built and maintained by many individuals, all of them with different skills, experiences, histories, and interests, who join forces not just as the release team but as the many SIGs that support the project and the community year-round. The Kubernetes project itself is made up of many, many individual components that, when combined, take the form of the project you see today. The theme for Kubernetes v1.25 is Combiner. We also have two features being deprecated or removed. Fifteen of those enhancements are entering Alpha, ten are graduating to Beta, and thirteen are graduating to Stable.
This release includes a total of 40 enhancements. Announcing the release of Kubernetes v1.25!
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