- In a future release, kubelet will no longer create the CSI NodePublishVolume target directory, in accordance with the CSI specification. CSI drivers may need to be updated accordingly to properly create and process the target path. ([#75535](https://github.com/kubernetes/kubernetes/issues/75535)) [SIG Storage]

#### kube-proxy:

* Add MAX_PODS_PER_NODE env so that GCE/GKE user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63621](https://github.com/kubernetes/kubernetes/pull/63621), [@grayluck](https://github.com/grayluck))

## Changelog since v1.8.12

### Other notable changes

* Add MAX_PODS_PER_NODE env so that user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63466](https://github.com/kubernetes/kubernetes/pull/63466), [@grayluck](https://github.com/grayluck))

   ([#123341](https://githu...

### API Change

- **ACTION REQUIRED** for custom scheduler plugin developers:
  `PodEligibleToPreemptOthers` in the `preemption` interface now includes `ctx` in the parameters.
  Please update your plugins' implementation accordingly. ([#126465](https://github.com/kubernetes/kubernetes/pull/126465), [@googs1025](https://github.com/googs1025)) [SIG Scheduling]

- Relaxed API validation for usage `key encipherment` and `kubelet` uses requested usages accordingly ([#111660](https://github.com/kubernetes/kubernetes/pull/111660), [@pacoxu](https://github.com/pacoxu))

  kubeadm no longer sets the node-mask automatically on IPv6 deployments, you must check that your IPv6 service subnet mask is compatible with the default node mask /64 or set it accordingly.

- ACTION REQUIRED for custom scheduler plugin developers:
  `EventsToRegister` in the `EnqueueExtensions` interface gets `ctx` in the parameters and `error` in the return values.
  Please change your plugins' implementation accordingly. ([#126113](https://github.com/kubernetes/kubernetes/pull/126113), [@googs1025](https://github.com/googs1025)) [SIG Node, Scheduling, Storage and Testing]

* Add MAX_PODS_PER_NODE env so that GCE/GKE user can use it to specify the default max pods per node for the cluster. IP_ALIAS_SIZE will be changed accordingly. Must have ip alias enabled. ([#63451](https://github.com/kubernetes/kubernetes/pull/63451), [@grayluck](https://github.com/grayluck))

- Upgrade Stackdriver Logging Agent addon image to 0.6-1.6.0-1 to use Fluentd v1.2. This provides nanoseconds timestamp granularity...