- Kube-scheduler can run more than one scheduling profile. Given a pod, the profile is selected by using its `.spec.schedulerName`. ([#88285](https://github.com/kubernetes/kubernetes/pull/88285), [@alculquicondor](https://github.com/alculquicondor)) [SIG Apps, Scheduling and Testing]

- Fixed performance regression in scheduler caused by frequent metric lookup on critical code path. ([#117594](https://github.com/kubernetes/kubernetes/pull/117594), [@tosi3k](https://github.com/tosi3k))
- Fixed restricted debug profile. ([#117543](https://github.com/kubernetes/kubernetes/pull/117543), [@mochizuki875](https://github.com/mochizuki875))

- Graduated seccomp profile defaulting to GA.
  
  Set the kubelet `--seccomp-default` flag or `seccompDefault` kubelet configuration field to `true` to make pods on that node default to using the `RuntimeDefault` seccomp profile.
  

*   You can now disable AppArmor by setting the AppArmor profile to unconfined. ([#52395](https://github.com/kubernetes/kubernetes/pull/52395),[ @dixudx](https://github.com/dixudx))

- Avoid caching the Azure VMSS instances whose network profile is nil ([#100948](https://github.com/kubernetes/kubernetes/pull/100948), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

- ValidatingAdmissionPolicy now exclude TokenReview, SelfSubjectReview, LocalSubjectAccessReview,...

* Start synchronizing pods after network is ready.  ([#68752](https://github.com/kubernetes/kubernetes/pull/68752), [@krzysztof-jastrzebski](https://github.com/krzysztof-jastrzebski))
* kubectl has gained new --profile and --profile-output options to output go profiles ([#68681](https://github.com/kubernetes/kubernetes/pull/68681), [@dlespiau](https://github.com/dlespiau))

* Upgrade installed packages when building hyperkube to improve the security profile ([#25114](https://github.com/kubernetes/kubernetes/pull/25114), [@aaronlevy](https://github.com/aaronlevy))

  label selectors.'
   ([#113699](https://github.com/kubernetes/kubernetes/pull/113699), [@liggitt](https://github.com/liggitt))
- Add `percentageOfNodesToScore` as a scheduler profile level parameter to API version `v1`. When a profile `percentageOfNodesToScore` is set, it will override global `percentageOfNodesToScore`. ([#112521](https://github.com/kubernetes/kubernetes/pull/112521), [@yuanchen8911](https://github.com/yuanchen8911))

  certificate.' ([#119859](https://github.com/kubernetes/kubernetes/pull/119859), [@SataQiu](https://github.com/SataQiu))
- Added `CAP_NET_RAW` to netadmin debug profile and removed privileges when debugging nodes. ([#118647](https://github.com/kubernetes/kubernetes/pull/118647), [@mochizuki875](https://github.com/mochizuki875))