Kubernetes 1.25 graduates PodSecurity Admission to GA, completing the replacement of PodSecurityPolicy. This release finalizes CSI migration for major cloud providers, enhances network policy status tracking, and improves CronJob reliability with better scheduling logic.
PodSecurityPolicy deprecation in Kubernetes 1.21 marks the transition to Pod Security Admission and alternative policy engines like Gatekeeper and Kyverno.
Kubernetes 1.21 focused on security, stability, and long-term consistency, introducing immutable Secrets and ConfigMaps GA, graceful node shutdown GA, CronJobs GA, and the deprecation of PodSecurityPolicies. This release included 50 enhancements with 15 graduating to stable.
Gatekeeper reaches production readiness with improved performance, policy library, and migration tools for replacing PodSecurityPolicy.
Kubernetes 1.8 delivers major enhancements in security (RBAC GA, certificate rotation), workload APIs, runtime choices (CRI-O) and overall project maturity.