Kubernetes 1.17: Stability
…It was introduced as alpha in Kubernetes v1.12, with a second alpha with breaking changes in Kubernetes v1.13. This post summarizes the changes in the beta release. What is a…
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What is staleness?
Staleness in controllers comes from an outdated view of the world inside of the controller cache. In order to provide a fast user experience, controllers typically maintain a local cache of the state of the cluster. This cache is populated by watching the Kubernetes API server for changes to objects that the controller cares about. When the controller needs to take action, it will first check its cache to see if it has the latest information. If it does not, it will then update its cache by watching the API server for changes to objects that the controller cares about. This process is known as
Kubernetes v1.36: Staleness Mitigation and Observability for ControllersKubernetes 1.23: The Next Frontier
…Other Updates Graduated to Stable IPv4/IPv6 Dual-Stack Support Skip Volume Ownership Change TTL After Finished Controller Config FSGroup Policy in CSI Driver object Generic Ephemeral Inline Volumes Defend Against Logging…
Kubernetes v1.33: Octarine
…A special controller, volume-data-source-validator , validates these data source references, alongside a newly stable CustomResourceDefinition (CRD) for an API kind named VolumePopulator. The VolumePopulator API allows volume populator controllers to…
Kubernetes 1.16: Custom Resources, Overhauled Metrics, and Volume Extensions
…Significant Changes to the Kubernetes API As the Kubernetes API has evolved, we have promoted some API resources to stable , others have been reorganized to different groups. We deprecate older versions of…
Kubernetes 1.21: Power to the Community
…Immutable resources also have scaling benefits because controllers do not need to poll the API server to watch for changes. This feature has graduated to stable in Kubernetes 1.21. IPv4/IPv6…
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