* When deleting an object with `--grace-period=0`, the client will begin a graceful deletion and wait until the resource is fully deleted.  To force deletion, use the `--force` flag. ([#37263](https://github.com/kubernetes/kubernetes/pull/37263), [@smarterclayton](https://github.com/smarterclayton))

### Node Components

    *  - Created new GCE_SSH_KEY allowing specification of SSH keys for gce, gke, and kubemark.
    *  - AWS_SSH_KEY, previously assumed to be an absolute path can now be either relative or absolute
    *  - LOCAL_SSH_KEY (for local and vsphere providers) was previously assumed to be a filename relative to ~/.ssh but can now also be an absolute path

import   "lib/math"         math.Sin
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import . "lib/math"         Sin
</pre>

<p>
An import declaration declares a dependency relation between
the importing and imported package.
It is illegal for a package to import itself, directly or indirectly,
or to directly import a package without

*   Relative paths in the Kubelet's local config files (`--init-config-dir`) will now be resolved relative to the location of the containing files. ([#55648](https://github.com/kubernetes/kubernetes/pull/55648),[ @mtaufen](https://github.com/mtaufen))

* Owner references can now be set during creation, even if the user doesn't have deletion power ([#63403](https://github.com/kubernetes/kubernetes/pull/63403), [@deads2k](https://github.com/deads2k))

  In order to perform an unsafe deletion of a corrupt resource, the user must enable the option for the delete
  request. A resource is considered corrupt if it can not be successfully retrieved from the storage due to
  a) transformation error e.g. decryption failure, or b) the object failed to decode. Normal deletion flow is

- Updates that remove remaining `metadata.finalizers` from  an object that is pending deletion (non-nil metadata.deletionTimestamp) and has no graceful deletion pending (nil or 0 metadata.deletionGracePeriodSeconds) now results in immediate deletion of the object. ([#77952](https://github.com/kubernetes/kubernetes/pull/77952), [@liggitt](https://github.com/liggitt))

- AdmissionReview objects sent for the creation of Namespace API objects now populate the `namespace` attribute consistently (previously the `namespace` attribute was empty for Namespace creation via POST requests, and populated for Namespace creation via server-side-apply PATCH requests) ([#95012](https://github.com/kubernetes/kubernetes/pull/95012), [@nodo](https://github.com/nodo)) [SIG API...

Prior to 1.17 and for existing nodes created by `kubeadm init` where kubelet client certificate rotation is desired, you must modify `/etc/kubernetes/kubelet.conf` to point to the PEM symlink for rotation:

* When using client or server certificate rotation, the Kubelet will no longer wait until the initial rotation succeeds or fails before starting static pods.  This makes running self-hosted masters with rotation more predictable. ([#58930](https://github.com/kubernetes/kubernetes/pull/58930), [@smarterclayton](https://github.com/smarterclayton))