extensions/v1beta1 API is now deprecated and will be removed in a future release. This functionality has been migrated to a dedicated v1 API - networking.k8s.io/v1. v1beta1 Network Policies can be upgraded to the v1 API with the [cluster/update-storage-objects.sh script](https://github.com/danwinship/kubernetes/blob/master/cluster/update-storage-objects.sh). Documentation can be found [here](https://kubernetes.io/docs/concepts/services-networking/network-policies/). ([#56425](https://github.com/kubernetes/kubernetes/pull/56425),...

- `kubectl exec` and `kubectl attach` now honor the `--quiet` flag which suppresses output from the local binary that could be confused by a script with the remote command output (all non-failure output is hidden). In addition, print inline with exec and attach the list of alternate containers when we default to the first spec.container. ([#99004](https://github.com/kubernetes/kubernetes/pull/99004),...

* add spelling checking script ([#59463](https://github.com/kubernetes/kubernetes/pull/59463), [@dixudx](https://github.com/dixudx))

- Added the `applyconfiguration` generator to the code-generator script that generates server-side apply configuration and client APIs ([#114987](https://github.com/kubernetes/kubernetes/pull/114987), [@astefanutti](https://github.com/astefanutti))

* API discovery failures no longer crash the kube controller manager via the garbage collector. ([#55259](https://github.com/kubernetes/kubernetes/pull/55259), [@ironcladlou](https://github.com/ironcladlou))
* Fix bug where master startup script on GCP failed randomly due to concurrent iptables invocations. ([#55945](https://github.com/kubernetes/kubernetes/pull/55945), [@x13n](https://github.com/x13n))



# v1.8.4

    - https://github.com/kubernetes/kubernetes/issues/92250
  
    To address this, the new debian-hyperkube-base image (v1.1.0) uses the
    debian-iptables base image (v12.1.0), which includes iptables-wrapper, a
    script used to determine the correct iptables mode to run in. ([#92493](https://github.com/kubernetes/kubernetes/pull/92493), [@justaugustus](https://github.com/justaugustus)) [SIG Cluster Lifecycle and Release]

## Dependencies

- Projects which use k8s.io/code-generator and invoke `generate-groups` or `generate-internal-groups.sh` have a new, simpler script (`kube_codegen.sh`) they can use.  The old scripts are deprecated but remain intact. ([#117262](https://github.com/kubernetes/kubernetes/pull/117262), [@thockin](https://github.com/thockin)) [SIG API Machinery and Instrumentation]

- Integration testing now takes periodic Prometheus scrapes from the etcd server.

- Fix etcd version migration script in etcd image. ([#91925](https://github.com/kubernetes/kubernetes/pull/91925), [@wenjiaswe](https://github.com/wenjiaswe)) [SIG API Machinery]

- The scheduler prints info logs when the extender returned an error. (`--v>5`) ([#107974](https://github.com/kubernetes/kubernetes/pull/107974), [@sanposhiho](https://github.com/sanposhiho))
- The script `cluster/gce/gci/configure.sh` now supports downloading `crictl` on ARM64 nodes ([#108034](https://github.com/kubernetes/kubernetes/pull/108034), [@tstapler](https://github.com/tstapler))