Automatic merge from submit-queue

Correct spelling in comment

**What this PR does / why we need it**:

Corrects two misspelled names in a comment.

**Which issue this PR fixes**:

N/A

**Special notes for your reviewer**:

NONE

**Release note**:

NONE

Automatic merge from submit-queue

fix changelog link not work

**What this PR does / why we need it**:
i read other pr has fix it, but now reappear. how can i got generate tool ?

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
```

Automatic merge from submit-queue (batch tested with PRs 44606, 46038)

Add ip-masq-agent addon to the addons folder. 

This also ensures that under gce we add this DaemonSet if the non-masq-cidr
is set to 0/0.



**What this PR does / why we need it**:

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:

**Release note**:
```release-note
Add ip-masq-agent addon to the addons folder which is used in GCE if  --non-masquerade-cidr is set to 0/0
```

Automatic merge from submit-queue (batch tested with PRs 44606, 46038)

Fix serialization of EnforceNodeAllocatable

EnforceNodeAllocatable being `nil` and `[]` are treated in different
ways by kubelet. Namely, `nil` is replaced with `[]string{"pods"}` by
the defaulting mechanism.

E.g. if you run kubelet in Docker-in-Docker environment
you may need to run it with the following options:
`--cgroups-per-qos=false --enforce-node-allocatable=`
(this corresponds to EnforceNodeAllocatable being empty array and not
null) If you then grab kubelet configuration via /configz and try to
reuse it for dynamic kubelet config, kubelet will think that
EnforceNodeAllocatable is null, failing to run in the
Docker-in-Docker environment.

Encountered this while updating Virtlet for Kubernetes 1.6
(the dev environment is based on kubeadm-dind-cluster)

Automatic merge from submit-queue (batch tested with PRs 46028, 46104)

Use name from node object on create

GetName() isn't populated in admission attributes on create unless the rest storage is a NamedCreator (which only specific subresources are today)

Fixes #46085

Automatic merge from submit-queue (batch tested with PRs 46028, 46104)

Add missing parameters of iscsi volume source to describe printer.

Automatic merge from submit-queue (batch tested with PRs 45908, 44898)

While calculating pod's cpu limits, need to count in init-container.

Need to count in init-container when calculating a pod's cpu limits.
Otherwise, may cause pod start failure due to "invalid argument"
error while trying to write "cpu.cfs_quota_us" file.

Fixed #44697 

Release note:
```
NONE
```

Automatic merge from submit-queue

kube-proxy: add --write-config-to flag

Add --write-config-to flag to kube-proxy to write the default configuration
values to the specified file location.

@deads2k suggested I create my own scheme for this, so I followed the example he shared with me. The only bit currently still referring to `api.Scheme` is where we create the event broadcaster recorder. In order to use the custom private scheme, I either have to pass it in to `NewProxyServer()`, or I have to make `NewProxyServer()` a member of the `Options` struct. If the former, then I probably need to export `Options.scheme`. Thoughts?

cc @mikedanese @sttts @liggitt @deads2k @smarterclayton @timothysc @kubernetes/sig-network-pr-reviews @kubernetes/sig-api-machinery-pr-reviews 

```release-note
Add --write-config-to flag to kube-proxy to allow users to write the default configuration settings to a file.
```

ensures that under gce we add this daemonset if the non-masq-cidr
is set to 0/0.

Automatic merge from submit-queue (batch tested with PRs 46075, 46059, 46095, 46097)

Use integer comparisons instead of string comparisons in autoscaler config validation

**What this PR does / why we need it**:

kube-up.sh doesn't work if MAX_INSTANCES_PER_MIG is specified and KUBE_AUTOSCALER_MAX_NODES is lexicographically smaller ("10" < "2").

Automatic merge from submit-queue (batch tested with PRs 46075, 46059, 46095, 46097)

Avoid sleep in endpoint controller

Automatic merge from submit-queue (batch tested with PRs 46075, 46059, 46095, 46097)

Integration test for kube-apiextensions-server: integers

**What this PR does / why we need it**: Check if integers are present after decoding.
Originally an issue for TPRs: #30213

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: for #45511 

**Special notes for your reviewer**:

**Release note**:

```
NONE
```
@sttts

Automatic merge from submit-queue (batch tested with PRs 46075, 46059, 46095, 46097)

Fix unbound variable

Fixes an unbound variable introduced in https://github.com/kubernetes/kubernetes/pull/45929/commits/6fd36792f185a2f846d08ff5547460b25435b413#diff-ed3df710e9af7cd30a185896a60897d9

Automatic merge from submit-queue (batch tested with PRs 45313, 46051)

Change all the existing admission init blocks to call a Register function

**What this PR does / why we need it**:
this is a two stage refactor when done there will be no init block in admission plugins.
Instead all plugins expose Register function which accept admission.Plugins instance.
The registration to global plugin registry happens inside Register function

**Release note**:

```
NONE
```

Automatic merge from submit-queue

GCE for cloud-controller-manager 

**What this PR does / why we need it**:
This implements the `NodeAddressesByProviderID`and `InstanceTypeByProviderID` methods used by the cloud-controller-manager to the GCE provider.


**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue

Redirect kubeadm issues to kubeadm repo

@kubernetes/sig-cluster-lifecycle-misc ptal

Automatic merge from submit-queue

remove unreachable code
Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>


**What this PR does / why we need it**:
remove unreachable code

Signed-off-by: Michail Kargakis <mkargaki@redhat.com>

Signed-off-by: Ma Shimiao <mashimiao.fnst@cn.fujitsu.com>

Automatic merge from submit-queue

Add node e2e tests for hostNetwork

**What this PR does / why we need it**:

Add node e2e tests for hostNetwork.

**Which issue this PR fixes**

Part of #44118.

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

/assign @Random-Liu @yujuhong

Automatic merge from submit-queue

Copy static variable 'verb' before instrumenting APIserver call to prevent overwriting

Fixes https://github.com/kubernetes/kubernetes/issues/45566

cc @wojtek-t @gmarek

*Add splitProviderID helper function
*Add getInstanceFromProjectInZoneByName function
*Implement gce InstanceTypeByProviderID
*Implement gce NodeAddressesByProviderID

Automatic merge from submit-queue

IPv6 support for hexCIDR()

Includes these changes:
- Modified so that IPv6 CIDRs can be converted correctly.
- Added test cases for IPv6 addresses.
- Split UTs for hexCIDR() and asciiCIDR() so that masking can be tested.
- Add UTs for failure cases.

Note: Some code that calls hexCIDR() builds a CIDR from the pod IP string
and the concatenation of "/32". These should, in the future, use "128",
if/when the pod IP is IPv6. Not addressed as part of this commit.



**What this PR does / why we need it**:

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #45906

**Special notes for your reviewer**:

**Release note**:

```release-noteNONE
```

Automatic merge from submit-queue

Log kubefed operations at log level 4 in our test environments.

This is useful for debugging test failures that involve federation control plane turn up/down.


**Release note**:
```release-note
NONE
```

/assign @perotinus @csbell 
/sig federation

cc @kubernetes/sig-federation-pr-reviews

Need to count in init-container when calculating a pod's cpu limits.
Otherwise, may cause pod start failure due to "invalid argument"
error while trying to write "cpu.cfs_quota_us" file.

Automatic merge from submit-queue

Initialize cloud providers with a K8s clientBuilder

**What this PR does / why we need it**:
This PR provides each cloud provider the ability to generate kubernetes clients. Either the full access or service account client builder is passed from the controller manager. Cloud providers could need to retrieve information from the cluster that isn't provided through defined interfaces, and this seems more preferable to adding parameters.

Please leave your thoughts/comments.

**Release note**:
```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 41535, 45985, 45929, 45948, 46056)

[Federation] Fix bad logic of deletion error handling for federated updater

Reverts a change accidentally added in #45364.

cc: @kubernetes/sig-federation-pr-reviews

Automatic merge from submit-queue (batch tested with PRs 41535, 45985, 45929, 45948, 46056)

remove useless flags from hack/verify-flags/known-flags.txt

Flags in known-flags.txt is used to check misspelling from "-" to "_" in
workspace, so a flag with out "-" should not show up in this file.

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 41535, 45985, 45929, 45948, 46056)

NodeRestriction admission plugin

Adds an optional `NodeRestriction` admission plugin that limits identifiable kubelets to mutating their own Node object, and Pod objects bound to their node.

This is the admission portion of https://github.com/kubernetes/community/blob/master/contributors/design-proposals/kubelet-authorizer.md and kubernetes/features#279

```release-note
The `NodeRestriction` admission plugin limits the `Node` and `Pod` objects a kubelet can modify. In order to be limited by this admission plugin, kubelets must use credentials in the `system:nodes` group, with a username in the form `system:node:<nodeName>`. Such kubelets will only be allowed to modify their own `Node` API object, and only modify `Pod` API objects that are bound to their node.
```

Automatic merge from submit-queue (batch tested with PRs 41535, 45985, 45929, 45948, 46056)

add CRD finalizer to remove CRs

Fixes https://github.com/kubernetes/kubernetes/issues/45878

This adds a finalizer for customresourcedefinitions to prevent CRD deletion until all CR instances are gone.

@sdminonne I lost track of your issue, but here's the fix

I'm at a loss for how to test this.  It's tested from the outside by ensuring that a CRD delete removes its instances (integration test) and we could add more integration tests, but for unit tests I can't seem to find a mock `dynamic.ClientPool` and its not easily writeable at the moment.  I'm thinking about saying we just add more black box tests given the options.

Automatic merge from submit-queue (batch tested with PRs 41535, 45985, 45929, 45948, 46056)

kubelet/envvars: Adding brackets to IPv6 addresses
Signed-off-by: André Martins <aanm90@gmail.com>

**What this PR does / why we need it**: This adds IPv6 brackets on environments variables pods

**Special notes for your reviewer**:

Since the IP is a string I think the fastest way to detect if it's an IPv6 was to check for the presence of `:` in it. Let me know what you think.

Automatic merge from submit-queue

Redirect users filing kubectl issues to the kubernetes/kubectl repo

Automatic merge from submit-queue

let client-gen understand vendor

This is extracted from #44784, where we move external api types to k8s.io/api. After the move, the types will locate at vendor/k8s.io/api/xxx. However, gengo index the parsed package using the import path, which is stripped of  the vendor/ prefix, so we'll need to strip the vendor/ prefix as necessary in client-gen.

This PR doesn't produce any change to the generated clientset yet since all types are still in the kubernetes repo.