## Changelog since v1.20.0

## What's New (Major Themes)

### Deprecation of PodSecurityPolicy

tive","matchContext","matchAnyContext","elementMatchers","setMatchers","bySet","byElement","superMatcher","outermost","matchedCount","setMatched","contextBackup","dirrunsUnique","token","compiled","filters","unique","getText","isXML","selectors","until","truncate","is","siblings","n","rneedsContext","rsingleTag","winnow","qualifier","self","rootjQuery","parseHTML","ready","rparentsprev","guaranteedUnique","children","contents","prev","sibling","cur","targets","l","closest","index","prevAll","add...

* Correct env var name in configure-helper ([#33848](https://github.com/kubernetes/kubernetes/pull/33848), [@mtaufen](https://github.com/mtaufen))
* wait until the pods are deleted completely ([#34778](https://github.com/kubernetes/kubernetes/pull/34778), [@ymqytw](https://github.com/ymqytw))

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r(duration) {\n  let called = false\n\n  $(this).one(Util.TRANSITION_END, () => {\n    called = true\n  })\n\n  setTimeout(() => {\n    if (!called) {\n      Util.triggerTransitionEnd(this)\n    }\n  }, duration)\n\n  return this\n}\n\nfunction setTransitionEndSupport() {\n  $.fn.emulateTransitionEnd = transitionEndEmulator\n  $.event.special[Util.TRANSITION_END] = getSpecialTransitionEndEvent()\n}\n\n/**\n * Public Util API\n */\n\nconst Util = {\n  TRANSITION_END: 'bsTransitionEnd',\n\n  getUID(prefix)...

  - build: Use go-runner:buster-v2.0.1 (built using go1.15.1)
  - bazel: Replace --features with Starlark build settings flag
  - hack/lib/util.sh: some bash cleanups
    
    - switched one spot to use kube::logging
    - make kube::util::find-binary return an error when it doesn't find
      anything so that hack scripts fail fast instead of with "binary not
      found errors".

* Changes secret, configMap, downwardAPI and projected volumes to mount read-only, instead of allowing applications to write data and then reverting it automatically. Until version 1.11, setting the feature gate ReadOnlyAPIDataVolumes=false will preserve the old behavior. ([#58720](https://github.com/kubernetes/kubernetes/pull/58720), [@joelsmith](https://github.com/joelsmith))

- `MergeDefaultEvictionSettings` indicates that defaults for...

selectors built from `matchLabelKeys` into the `labelSelector` of `topologySpreadConstraints`, aligning Pod Topology Spread behavior with Inter-Pod Affinity. To prevent breaking existing Pods using `matchLabelKeys`, this scheduler behavior was preserved until v1.34. Upgrades from v1.32 to v1.34 should be done incrementally (v1.32 → v1.33 → v1.34), ensuring Pods created at v1.32 with `matchLabelKeys` are scheduled before reaching v1.34. Controllers relying on `matchLabelKeys` no longer need to handle them...

      endpoint now gets broken when that endpoint becomes non-ready
      (rather than continuing until the endpoint is fully deleted).
  
    - Traffic to a service IP now starts getting rejected (as opposed to
      merely dropped) as soon as there are no longer any *usable*
      endpoints, rather than waiting until all of the terminating
      endpoints have terminated even when those terminating endpoints