Authors: Craig Box (ARMO), Ben Hirschberg (ARMO) Admission control is an important part of the Kubernetes control plane, with several internal features depending on the ability to approve or change an API object as it is submitted to the server. It is also useful for an administrator to be able to define business logic, or Read more about Blog: Kubernetes Validating Admission Policies: A Practical Example[…]
Author: Harshita Sao As Kubernetes develops and matures, features may be deprecated, removed, or replaced with better ones for the project’s overall health. Based on the information available at this point in the v1.27 release process, which is still ongoing and can introduce additional changes, this article identifies and describes some of the planned changes Read more about Blog: Kubernetes Removals and Major Changes In v1.27[…]
In today’s fast paced world, every second counts and the ability to react to activities in a timely fashion can mean the difference between satisfying the needs of consumers and meeting Service-Level Agreements. Each are goals of Event-Driven Ansible, which seeks to further the reach of Ansible based automation by responding to events that meet Read more about Kubernetes Meets Event-Driven Ansible[…]
Author: Shiming Zhang (DaoCloud), Wei Huang (Apple), Yibo Zhuang (Apple) Have you ever wondered how to set up a cluster of thousands of nodes just in seconds, how to simulate real nodes with a low resource footprint, and how to test your Kubernetes controller at scale without spending much on infrastructure? If you answered “yes” Read more about Blog: Introducing KWOK: Kubernetes WithOut Kubelet[…]
Author: Natali Vlatko, SIG Docs Co-Chair for Kubernetes Katacoda, the popular learning platform from O’Reilly that has been helping people learn all about Java, Docker, Kubernetes, Python, Go, C++, and more, shut down for public use in June 2022. However, tutorials specifically for Kubernetes, linked from the Kubernetes website for our project’s users and contributors, Read more about Blog: Free Katacoda Kubernetes Tutorials Are Shutting Down[…]
Authors: Filip Křepinský (Red Hat), Morten Torkildsen (Google), Ravi Gudimetla (Apple) Ensuring the disruptions to your applications do not affect its availability isn’t a simple task. Last month’s release of Kubernetes v1.26 lets you specify an unhealthy pod eviction policy for PodDisruptionBudgets (PDBs) to help you maintain that availability during node management operations. In this Read more about Blog: Kubernetes 1.26: Eviction policy for unhealthy pods guarded by PodDisruptionBudgets[…]
Author: Roman Bednář (Red Hat) The v1.25 release of Kubernetes introduced an alpha feature to change how a default StorageClass was assigned to a PersistentVolumeClaim (PVC). With the feature enabled, you no longer need to create a default StorageClass first and PVC second to assign the class. Additionally, any PVCs without a StorageClass assigned can Read more about Blog: Kubernetes 1.26: Retroactive Default StorageClass[…]
Author: Takafumi Takahashi (Hitachi Vantara) Kubernetes v1.26, released last month, introduced an alpha feature that lets you specify a data source for a PersistentVolumeClaim, even where the source data belong to a different namespace. With the new feature enabled, you specify a namespace in the dataSourceRef field of a new PersistentVolumeClaim. Once Kubernetes checks that Read more about Blog: Kubernetes v1.26: Alpha support for cross-namespace storage data sources[…]
Authors: Andrew Sy Kim (Google) Kubernetes v1.26 includes significant advancements in network traffic engineering with the graduation of two features (Service internal traffic policy support, and EndpointSlice terminating conditions) to GA, and a third feature (Proxy terminating endpoints) to beta. The combination of these enhancements aims to address short-comings in traffic engineering that people face Read more about Blog: Kubernetes v1.26: Advancements in Kubernetes Traffic Engineering[…]
Authors: Aldo Culquicondor (Google) The Kubernetes 1.26 release includes a stable implementation of the Job controller that can reliably track a large amount of Jobs with high levels of parallelism. SIG Apps and WG Batch have worked on this foundational improvement since Kubernetes 1.22. After multiple iterations and scale verifications, this is now the default Read more about Blog: Kubernetes 1.26: Job Tracking, to Support Massively Parallel Batch Workloads, Is Generally Available[…]