MASTER_OS_DISTRIBUTION.

Automatic merge from submit-queue

Fail correctly in go-to-protobuf

We need to return earlier.

@wojtek-t

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Allow switching rate limiter inside RateLimitedQueue

Ref. #28832
cc @davidopp  

```release-note
Deprecate deleting-pods-burst ControllerManager flag
```

Automatic merge from submit-queue

Update CONTRIBUTING.md

```release-note
* Rewrote two sentences.
```

Automatic merge from submit-queue

Refactor Printer arguments

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Fixes #21260

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Support terminal resizing for exec/attach/run

```release-note
Add support for terminal resizing for exec, attach, and run. Note that for Docker, exec sessions
inherit the environment from the primary process, so if the container was created with tty=false,
that means the exec session's TERM variable will default to "dumb". Users can override this by
setting TERM=xterm (or whatever is appropriate) to get the correct "smart" terminal behavior.
```

Fixes #13585

Automatic merge from submit-queue

genconversion=false should skip fields during conversion generation

Currently it only skips if the fields don't match, but that leaves no
way for callers to say "no really, ignore this field".

@wojtek-t @thockin *must* be able to ignore a non-convertible field (if the types are different but we still want the autogeneration of everything else)

Rewrote a few sentences.

Fixes #21260

Automatic merge from submit-queue

e2e-runner: Update the image family used for GCI canary test images

@Amey-D @spxtr Can you review?
@Random-Liu Heads up
cc/ @kubernetes/goog-image 

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Add ForgetPod to SchedulerCache

Fix #28883

@gmarek @davidopp @xiang90 

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dynamic provisioning proposal

Proposal for dynamic provisioning using storage classes; supercedes #17056

@kubernetes/sig-storage 

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Optimise the process of the CalculateSpreadPriority in selector_spreading.go

It had better inspect if the nodeLister is normal first in the CalculateSpreadPriority in selector_spreading.go. If the nodeLister.List return error, the function return directly, not need deal the serviceLister and controllerLister and replicaSetLister.

Automatic merge from submit-queue

Fixed several typos

Fix issue with closing channels in job controller tests

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Implement alpha version of PreferAvoidPods

This is part of #18853

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Automatic merge from submit-queue

Unset KUBERNETES_PROVIDER when KUBERNETES_CONFORMANCE_TEST is set

fixes #26269
same as #26530 - i accidentally lost my fork and couldn't rebase there ;)
@mikedanese PTAL

Revert "Add a customized ssh dialer that will timeout"

Automatic merge from submit-queue

Don't panic if we hit a dangling symlink in mungedocs

I hit this because I have a dangling symlink, which would cause a panic.

We need to return earlier.

Automatic merge from submit-queue

Log restclient request/response bodies using %#v.

These are now protobufs, so outputting them with %s dumps a large
amount of binary garbage into the log. %#v properly escapes exotic
characters.

Currently it only skips if the fields don't match, but that leaves no
way for callers to say "no really, ignore this field".

Automatic merge from submit-queue

Retry when apiserver fails to listen on insecure port

The apiserver will already continually retry when it fails to bind to the secure port. However, with the insecure port it does not retry, and any failures cause the apiserver to exit.

This change makes it so the api-server will retry on both insecure/secure ports.

A use-case for this change is for self-hosting the api-server, particularly when you are only running a single copy in your cluster. In some bootstrap and upgrade scenarios - it's necessary to replace/pivot from an existing api-server on the same host -- where you need a new copy running before tearing down the old (which is problematic when the api-server will try to bind to an in-use port and exit).

Signed-off-by: PingWang <wang.ping5@zte.com.cn>

Signed-off-by: PingWang <wang.ping5@zte.com.cn>

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Add a customized ssh dialer that will timeout

Fix https://github.com/kubernetes/kubernetes/issues/23835.

@a-robinson @cjcullen @lavalamp 

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Add missing mungedoc run to hack/verify-munge-docs.sh.

Automatic merge from submit-queue

ConfigMap added to kube addon manager

fixes #28775

Automatic merge from submit-queue

[client-gen] Allow passing subresources in Patch method

Expand the Patch() method from:
```
Patch(name string, pt api.PatchType, data []byte)
```
to
```
Patch(name string, pt api.PatchType, data []byte, subresources ...string)
```

Continue on #27293. Fixes #26580.

cc @Random-Liu @lavalamp 

Automatic merge from submit-queue

add default flannel configuration for cni

I added a default flannel configuration for cni.

So hyperkube can be started with:
```
--network-plugin=kubenet
```
or with flannel:

```
--network-plugin=cni
--network-plugin-dir=/etc/cni/net.d
```

Requires update of cni binaries to 0.3.0 or later to work. See also https://github.com/kubernetes/kubernetes/issues/27603

This PR is intended to support multi-node Hyperkube 
https://github.com/kubernetes/kube-deploy/pull/115



CC @zreigz  

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update resource builder error message to be more clear

release-note-none

The error message given by command line `kubectl get` is sometimes of no help / not clear on what must be corrected, e.g.：
`kubectl get pod pod/database-1-i10b9`
error: when passing arguments in resource/name form, all arguments must include the resource 

##### Steps to Reproduce:
1. Run command "$ kubectl get pod pod/database-1-i10b9"  

##### Actual Result:
Get unfriendly error message which is of no help:
"error: when passing arguments in resource/name form, all arguments must include the resource"

##### Expected Result:
Error message should recommend end user to run this cli in good grammar: "$ kubectl get pod database-1-i10b9" or "$ kubectl get pod/database-1-i10b9"

##### Before
"error: when passing arguments in resource/name form, all arguments must include the resource"

##### After
"error: there is no need to specify a resource type as a separate argument when passing arguments in resource/name form (e.g. `kubectl get resource/<resource_name>` instead of `kubectl get resource resource/<resource_name>`"

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Add support for terminal resizing for exec, attach, and run. Note that for Docker, exec sessions
inherit the environment from the primary process, so if the container was created with tty=false,
that means the exec session's TERM variable will default to "dumb". Users can override this by
setting TERM=xterm (or whatever is appropriate) to get the correct "smart" terminal behavior.

Automatic merge from submit-queue

Stop eating panics

Fixes #28365

Update CHANGELOG.md.

Automatic merge from submit-queue

Better visibility to contributing docs.

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1. Updates the README.md to have a heading with the word "contribute", long
   time OSS contributors (or maybe I just do this) skim docs quickly and need
   a large call out to exactly what they are looking for.
2. The best resource I found was a developer guide that wasn't even linked in
   CONTRIBUTING.md, which seems like a shame so I made it right at the top!