What’s New in Kubernetes 1.22? Exploring Storage Volumes and Real‑World Persistence
Kubernetes 1.22 introduces 53 enhancements—including 14 GA features, 24 beta and 16 alpha updates—while deprecating three APIs, and it adds robust storage‑volume capabilities that address data loss and sharing challenges by integrating NFS, Ceph and other persistent back‑ends.
Kubernetes released version 1.22 on August 4, marking the second major release of 2021 with a total of 53 enhancements, of which 14 have graduated to GA, 24 to beta, 16 to alpha, and three features have been deprecated.
Server‑side apply graduated to GA
External credential providers are now stable
etcd upgraded to 3.5.0
Memory resource quality of service
Node system swap support
Windows enhancements and features
Default seccomp profile
More secure control‑plane with kubeadm
Removal of several deprecated beta APIs
Improvements to the temporary container API
The release reflects the project’s maturity, but each new set of features also brings additional responsibilities for users, vendors, and the ecosystem.
Among the most notable enhancements is the focus on storage, addressing two key challenges: how to protect container data from loss when pods are recreated, and how to share data between containers within the same pod.
Kubernetes solves these problems by introducing storage volumes. A volume is a shared directory defined at the pod level that can be mounted by all containers in the pod, backed by external storage systems such as NFS, Ceph, or other persistent solutions. The persistence of data depends on whether the underlying volume supports a durable storage mechanism.
To achieve persistent and shared data, Kubernetes volumes can be combined with NFS for simple file sharing or with Ceph RBD/CephFS for more advanced, highly available storage.
Signed-in readers can open the original source through BestHub's protected redirect.
This article has been distilled and summarized from source material, then republished for learning and reference. If you believe it infringes your rights, please contactand we will review it promptly.
MaGe Linux Operations
Founded in 2009, MaGe Education is a top Chinese high‑end IT training brand. Its graduates earn 12K+ RMB salaries, and the school has trained tens of thousands of students. It offers high‑pay courses in Linux cloud operations, Python full‑stack, automation, data analysis, AI, and Go high‑concurrency architecture. Thanks to quality courses and a solid reputation, it has talent partnerships with numerous internet firms.
How this landed with the community
Was this worth your time?
0 Comments
Thoughtful readers leave field notes, pushback, and hard-won operational detail here.