@@ -157,15 +157,19 @@ has finished performing the TLS Bootstrap.
## The kubelet drop-in file for systemd
The configuration file installed by the kubeadm DEB or RPM package is written to
kubeadm ships with configuration for how systemd should run the kubelet.
Note that the kubeadm CLI command never touches this drop-in file.
This configuration file installed by the `kubeadm` [DEB](https://github.com/kubernetes/kubernetes/blob/master/build/debs/10-kubeadm.conf) or [RPM package](https://github.com/kubernetes/kubernetes/blob/master/build/rpms/10-kubeadm.conf) is written to
`/etc/systemd/system/kubelet.service.d/10-kubeadm.conf` and is used by systemd.
It augments the basic [`kubelet.service` for RPM](https://github.com/kubernetes/kubernetes/blob/master/build/rpms/kubelet.service) (resp. [`kubelet.service` for DEB](https://github.com/kubernetes/kubernetes/blob/master/build/debs/kubelet.service))):
@@ -279,14 +279,12 @@ Configure each cluster with a different cluster name using `kube-controller-mana
### Stable
- You can now create a non-preempting Pod priority. If set on a class, the pod will continue to be prioritized above queued pods of a lesser class, but will not preempt running pods. ([#74614](https://github.com/kubernetes/kubernetes/pull/74614), [@denkensk](https://github.com/denkensk))
- Third party device monitoring is now enabled by default (KubeletPodResources). ([#77274](https://github.com/kubernetes/kubernetes/pull/77274), [@RenaudWasTaken](https://github.com/RenaudWasTaken))
- The kube-apiserver’s `watch` can now be enabled for events using the `--watch-cache-sizes` flag. ([#74321](https://github.com/kubernetes/kubernetes/pull/74321), [@yastij](https://github.com/yastij))
### Beta
- Admission webhooks can now register for a single version of a resource (for example, `apps/v1 deployments`) and be called when any other version of that resource is modified (for example `extensions/v1beta1 deployments`). This allows new versions of a resource to be handled by admission webhooks without needing to update every webhook to understand the new version. See the API documentation for the `matchPolicy: Equivalent` option in MutatingWebhookConfiguration and ValidatingWebhookConfiguration types. ([#78135](https://github.com/kubernetes/kubernetes/pull/78135), [@liggitt](https://github.com/liggitt))
- Third party device monitoring is now enabled by default (KubeletPodResources). ([#77274](https://github.com/kubernetes/kubernetes/pull/77274), [@RenaudWasTaken](https://github.com/RenaudWasTaken))
- The CustomResourcePublishOpenAPI feature is now beta and enabled by default. CustomResourceDefinitions with [structural schemas](https://github.com/kubernetes/enhancements/blob/master/keps/sig-api-machinery/20190425-structural-openapi.md) now publish schemas in the OpenAPI document served at `/openapi/v2`. CustomResourceDefinitions with non-structural schemas have a `NonStructuralSchema` condition added with details about what needs to be corrected in the validation schema. ([#77825](https://github.com/kubernetes/kubernetes/pull/77825), [@roycaihw](https://github.com/roycaihw))
- Online volume expansion (ExpandInUsePersistentVolumes) is now a beta feature. As such, it is enabled by default. ([#77755](https://github.com/kubernetes/kubernetes/pull/77755), [@gnufied](https://github.com/gnufied))
- The `SupportNodePidsLimit` feature is now beta, and enabled by default. It is no longer necessary to set the feature gate `SupportNodePidsLimit=true`. ([#76221](https://github.com/kubernetes/kubernetes/pull/76221), [@RobertKrawitz](https://github.com/RobertKrawitz))
@@ -301,6 +299,7 @@ Configure each cluster with a different cluster name using `kube-controller-mana
### Alpha
- You can now create a non-preempting Pod priority. If set on a class, the pod will continue to be prioritized above queued pods of a lesser class, but will not preempt running pods. ([#74614](https://github.com/kubernetes/kubernetes/pull/74614), [@denkensk](https://github.com/denkensk))
- kubelet now allows the use of XFS quotas (on XFS and suitably configured ext4fs filesystems) to monitor storage consumption for ephemeral storage. This method of monitoring consumption, which is currently available only for `emptyDir` volumes, is faster and more accurate than the old method of walking the filesystem tree. Note that it does not enforce limits, it only monitors consumption. To utilize this functionality, set the feature gate `LocalStorageCapacityIsolationFSQuotaMonitoring=true`. For ext4fs filesystems, create the filesystem with `mkfs.ext4 -O project <block_device>` and run `tune2fs -Q prjquota `block device`; XFS filesystems need no additional preparation. The filesystem must be mounted with option `project` in `/etc/fstab`. If the primary partition is the root filesystem, add `rootflags=pquota` to the GRUB config file. ([#66928](https://github.com/kubernetes/kubernetes/pull/66928), [@RobertKrawitz](https://github.com/RobertKrawitz))
- Finalizer Protection for Service LoadBalancers (ServiceLoadBalancerFinalizer) has been added as an Alpha feature, which is disabled by default. This feature ensures the Service resource is not fully deleted until the correlating load balancer resources are deleted. ([#78262](https://github.com/kubernetes/kubernetes/pull/78262), [@MrHohn](https://github.com/MrHohn))
- Inline CSI ephemeral volumes can now be controlled with PodSecurityPolicy when the CSIInlineVolume alpha feature is enabled. ([#76915](https://github.com/kubernetes/kubernetes/pull/76915), [@vladimirvivien](https://github.com/vladimirvivien))
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