SIG Network has graduated the widely used [Ingress API](https://kubernetes.io/docs/concepts/services-networking/ingress/) to general availability in Kubernetes 1.19. This change recognises years of hard work by Kubernetes contributors, and paves the way for further work on future networking APIs in Kubernetes.

### seccomp graduates to General Availability

- The deprecated flag `--hard-pod-affinity-symmetric-weight` and `--scheduler-name` have been removed from `kube-scheduler`. Use `ComponentConfig` instead to configure those parameters. ([#102805](https://github.com/kubernetes/kubernetes/pull/102805), [@ahg-g](https://github.com/ahg-g))...

- Kubernetes will now consume the AWS region list from the AWS SDK instead of a hard-coded list in the cloud provider. ([#75990](https://github.com/kubernetes/kubernetes/pull/75990), [@mcrute](https://github.com/mcrute))

* Filter duplicate network packets in promiscuous bridge mode (with ebtables) ([#28717](https://github.com/kubernetes/kubernetes/pull/28717), [@freehan](https://github.com/freehan))
* Refactor to simplify the hard-traveled path of the KubeletConfiguration object ([#29216](https://github.com/kubernetes/kubernetes/pull/29216), [@mtaufen](https://github.com/mtaufen))

is-a-democrat.com
is-a-designer.com
is-a-doctor.com
is-a-financialadvisor.com
is-a-fullstack.dev
is-a-geek.com
is-a-geek.net
is-a-geek.org
is-a-good.dev
is-a-green.com
is-a-guru.com
is-a-hard-worker.com
is-a-hunter.com
is-a-knight.org
is-a-landscaper.com
is-a-lawyer.com
is-a-liberal.com
is-a-libertarian.com
is-a-linux-user.org
is-a-llama.com
is-a-musician.com

* By default, --low-diskspace-threshold-mb is not set, and --eviction-hard includes "nodefs.available<10%,nodefs.inodesFree<5%" ([#46448](https://github.com/kubernetes/kubernetes/pull/46448), [@dashpole](https://github.com/dashpole))

### SIG Windows

- Kubelet no longer attempts to sync iptables on non-Linux systems.. ([#67690](https://github.com/kubernetes/kubernetes/pull/67690), [@feiskyer](https://github.com/feiskyer))
- Kubelet no longer applies default hard evictions of nodefs.inodesFree on non-Linux systems. ([#67709](https://github.com/kubernetes/kubernetes/pull/67709), [@feiskyer](https://github.com/feiskyer))

- The `matchLabelKeys/mismatchLabelKeys` feature is introduced to the hard/soft `PodAffinity/PodAntiAffinity`. ([#116065](https://github.com/kubernetes/kubernetes/pull/116065), [@sanposhiho](https://github.com/sanposhiho))

* Remove deprecated flags: --low-diskspace-threshold-mb and --outofdisk-transition-frequency, which are replaced by --eviction-hard ([#48846](https://github.com/kubernetes/kubernetes/pull/48846), [@dashpole](https://github.com/dashpole))

- UDP and SCTP protocols can left stale connections that need to be cleared to avoid services disruption, but they can cause problems that are hard to debug.