Kubernetes - v1.21.9

Changelog since v1.21.8

Changes by Kind

Feature

• Kube-apiserver: when merging lists, Server Side Apply now prefers the order of the submitted request instead of the existing persisted object (#107569, @jiahuif) [SIG API Machinery, CLI, Cloud Provider, Cluster Lifecycle, Instrumentation, Storage and Testing]

Bug or Regression

• An inefficient lock in EndpointSlice controller metrics cache has been reworked. Network programming latency may be significantly reduced in certain scenarios, especially in clusters with a large number of Services. (#107169, @robscott) [SIG Apps and Network]
• Client-go: fix that paged list calls with ResourceVersionMatch set would fail once paging kicked in. (#107336, @fasaxc) [SIG API Machinery]
• Fix a panic when using invalid output format in kubectl create secret command (#107345, @rikatz) [SIG CLI]
• Fixes a rare race condition handling requests that timeout (#107460, @liggitt) [SIG API Machinery]
• Mount-utils: Detect potential stale file handle (#107040, @andyzhangx) [SIG Storage]

Other (Cleanup or Flake)

• Updates konnectivity-network-proxy to v0.0.27. This includes a memory leak fix for the network proxy (#107188, @rata) [SIG API Machinery and Cloud Provider]

Dependencies

Added

Nothing has changed.

Changed

• github.com/google/cadvisor: v0.39.0 → v0.39.3
• sigs.k8s.io/apiserver-network-proxy/konnectivity-client: v0.0.22 → v0.0.27
• sigs.k8s.io/structured-merge-diff/v4: v4.1.2 → v4.2.1

Removed

Nothing has changed.