* kube-controller-manager: Add configure-cloud-routes option ([#25614](https://github.com/kubernetes/kubernetes/pull/25614), [@justinsb](https://github.com/justinsb))
* kubelet: reading cloudinfo from cadvisor ([#21373](https://github.com/kubernetes/kubernetes/pull/21373), [@enoodle](https://github.com/enoodle))

     * @throws SmbException if an error occurs while checking read permissions
     */

    public boolean canRead() throws SmbException {
        if (getType() == TYPE_NAMED_PIPE) { // try opening the pipe for reading?
            return true;
        }
        return exists(); // try opening and catch sharing violation?
    }

    /**
     * Tests to see if the file this <code>SmbFile</code> represents

// CopyObjectHandler - Copy Object
// ----------
// This implementation of the PUT operation adds an object to a bucket
// while reading the object from another source.
// Notice: The S3 client can send secret keys in headers for encryption related jobs,
// the handler should ensure to remove these keys before sending them to the object layer.
// Currently these keys are:
//   - X-Amz-Server-Side-Encryption-Customer-Key

A security issue was discovered in kube-apiserver that could allow an attacker controlled aggregated API server to redirect client traffic to any URL.  This could lead to the client performing unexpected actions as well as leaking the client's credentials to third parties. 

There is no mitigation from this issue.  Cluster admins should take care to secure aggregated API servers and should not grant access to mutate `APIService`s to untrusted parties.

	c.Assert(err, nil)
	// executing the HTTP request.
	response, err = s.client.Do(request)
	c.Assert(err, nil)
	// validating the response status code.
	c.Assert(response.StatusCode, http.StatusOK)
	// reading the response body.
	// response body is expected to have the copied content of the first uploaded object.
	object, err := io.ReadAll(response.Body)
	c.Assert(err, nil)
	c.Assert(string(object), "hello world")
}

enabled.([#51436](https://github.com/kubernetes/kubernetes/pull/51436))

* [Action required] The validation rule for metadata.initializers.pending[x].name is tightened. The initializer name must contain at least three segments, separated by dots. You can create objects with pending initializers and not rely on the API server to add pending initializers according to `initializerConfiguration`. If you do so, update the initializer name in the existing objects and the configuration files to...

- Duplicate owner reference entries in create/update/patch requests now get deduplicated by the API server. The client sending the request now receives a warning header in the API response. Clients should stop sending requests with duplicate owner references. The API server may reject such requests as early as 1.24. ([#96185](https://github.com/kubernetes/kubernetes/pull/96185), [@roycaihw](https://github.com/roycaihw))...

in accord with this section must be in a format that is publicly
documented (and with an implementation available to the public in
source code form), and must require no special password or key for
unpacking, reading or copying.

  7. Additional Terms.

  "Additional permissions" are terms that supplement the terms of this
License by making exceptions from one or more of its conditions.

  
  - `apiserver_authentication_config_controller_last_config_info` metric after successfully loading the authentication configuration file.
  - `apiserver_authorization_config_controller_last_config_info` metric after successfully loading the authorization configuration file.

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