apps/v1betaX inadventertently contains its own variant of Scale. In
order to support scaling Deployments, ReplicaSets, etc, we need to support
these versions of Scale as well.
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Lift embedded structure out of ManifestURLHeader field
Related: #53833
```release-note
It is now possible to set multiple manifest url headers via the Kubelet's --manifest-url-header flag. Multiple headers for the same key will be added in the order provided. The ManifestURLHeader field in KubeletConfiguration object (kubeletconfig/v1alpha1) is now a map[string][]string, which facilitates writing JSON and YAML files.
```
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Update kube-openapi to use validation
**What this PR does / why we need it**: Moves openapi validation code to kube-openapi, so that we can move the rest of the code to apimachinery repository, so that later we can use it from both the client and the server.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #Nothing
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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admission: wire through validating-only admission
Based on https://github.com/kubernetes/kubernetes/pull/54232.
This is important and required for beta because it affects the shape of the webhook admission plugins that are going to be produced and is needed to make sure that our existing chain continues to properly verify and protect the API objects based on their final state after webhook admission mutators run.
We discussed this in the October 11 API machinery call with @erictune and @caesarxuchao and we agreed to do this as a requirement for beta. See this part of the recording: https://www.youtube.com/watch?v=mrgDPHyr4VY#t=325 .
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Fix error for strategic merge patch of custom resources
Fixes#50037.
We need the go struct tags `patchMergeKey` and `patchStrategy` for fields that support a strategic merge patch. For native resources, we can easily figure out these tags since we know the fields.
Because custom resources are decoded as Unstructured and because we're missing the metadata about how to handle each field in a strategic merge patch, we can't find the go struct tags. Hence, we can't easily do a strategic merge for custom resources.
So we should fail fast and return an error.
**Release note**:
```release-note
NONE
```
/cc @sttts @deads2k @ncdc
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rename metric reflector_xx_last_resource_version
**What this PR does / why we need it**:
mv reflector name from metric name to metric label
before:
```
reflector_k8s_io_kubernetes_pkg_client_informers_informers_generated_internalversion_factory_go:73_8664_last_resource_version{instance="104.154.20.21:443",job="kubernetes-apiservers"}
```
after
```
reflector_last_resource_version{instance="10.0.2.15:6443",job="kubernetes-apiservers",name="k8s_io_kubernetes_pkg_client_informers_informers_generated_internalversion_factory_go_73_8664"}
```
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#52121
**Special notes for your reviewer**:
None
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 54800, 53898, 54812, 54921, 53558). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
NewProxierWithNoProxyCIDR: fix handling IPv6 URLs
**What this PR does / why we need it**:
Current logic of splitting hostname from URL does not work if URL
is for IPv6 address and does not explicitly specify port number.
Example: "https://[2001:db8::1]/".
Use standard library function to get hostname out of URL string.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```release-note
- Fix handling of IPv6 URLs in NO_PROXY.
```
/area ipv6
/sig api-machinery
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Improve deleteOptions doc
**What this PR does / why we need it**:
This PR improves the doc of the 'PropagationPolicy' property of the DeleteOptions struct.
The said field is a string. It is very important a field for people who invoke a delete API.
For example, direct invocation of the deployment-delete API using the python client will have the replicaset and pods left behind. However, this field was not well documented. When people wanted to try different options, they have to dig into k8s source code to find out the acceptable values.
**Which issue this PR fixes**: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Useful helper functions for Unstructured
**Which issue this PR fixes**:
Fixes#40790
**Release note**:
```release-note
NONE
```
/kind feature
/sig api-machinery
/area client-libraries
/assign @sttts @liggitt
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Log error when a healthz check fails
**What this PR does / why we need it**:
Currently we only tell a user that a healthz check failed but we don't display the explicit error of the failed check. This is fine, but we should log the error to make debugging easier.
```release-note
Log error of failed healthz check
```
We need the go struct tags `patchMergeKey` and `patchStrategy`
for fields that support a strategic merge patch. For native
resources, we can easily figure out these tags since we know
the fields.
Because custom resources are decoded as Unstructured and
because we're missing the metadata about how to handle
each field in a strategic merge patch, we can't find the
go struct tags. Hence, we can't easily do a strategic merge
for custom resources.
So we should fail fast and return an error.
Automatic merge from submit-queue (batch tested with PRs 53190, 54790, 54445, 52607, 54801). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Update `truncateBody` to not truncate with high level
And add a unit-tests to verify that it works properly.
**What this PR does / why we need it**:
Update `truncateBody` so that one can use `V(10)` to read the entire content of a HTTP response.
**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
NONE
```
Automatic merge from submit-queue (batch tested with PRs 53190, 54790, 54445, 52607, 54801). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
remove created-by annotation
**What this PR does / why we need it**:
This PR removes `CreatedByAnnotation`.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50720
**Release note**:
```release-note
The `kubernetes.io/created-by` annotation is no longer added to controller-created objects. Use the `metadata.ownerReferences` item that has `controller` set to `true` to determine which controller, if any, owns an object.
```
Automatic merge from submit-queue (batch tested with PRs 54761, 54748, 53991, 54485, 46951). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
admission: unify plugin constructors
It's common in Go to return the actual object in constructors, not **one interface**
it implements. This allows us to implement multiple interfaces, but only have
one constructor. As having private types in constructors, we export all plugin structs, of course with private fields.
Note: super interfaces do not work if there are overlapping methods.
Automatic merge from submit-queue (batch tested with PRs 54761, 54748, 53991, 54485, 46951). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Make HugePages const name consistent.
**What this PR does / why we need it**:
Make HugePages const name in v1 be consistent with the name in api.
f9e6142f92/pkg/api/types.go (L686)
**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
NONE
```
Automatic merge from submit-queue (batch tested with PRs 53796, 54666, 54516, 54625, 54704). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Fix TestCRD Flake
**What this PR does / why we need it**:
The DestroyFunc functions returned by generic.NewRawStorage is never
called when we do a StartTestServer() in the test suite. For a quick
hack for now, added TrackStorageCleanup/RegisterStorageCleanup and
CleanupStorage. Note that unless TrackStorageCleanup is called (which
is called only from the test suite) the other two methods are
no-ops essentially. So no change in behavior at runtime. This vastly
brings down the number of goroutines that are left behind when this
test is executed and should reduce if not eliminate the flakiness
of TestCRD
**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
NONE
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Fix subresource discovery and versioning
Fixes https://github.com/kubernetes/kubernetes/issues/54684
Related to https://github.com/kubernetes/kubernetes/pull/54586
Allows distinct subresource group/version/kind to be used for each version (gives us a path to move to autoscaling/v1 for apps, or policy/v1 for eviction, etc)
Added tests to ensure scale subresources have expected discovery info, and that the object returned matches discovery, and that the endpoint accepts the advertised version
```release-note
Fixes discovery information for scale subresources in the apps API group
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
apiserver: return 4xx for invalid patch
Fixes#54423
Currently, an invalid patch returns 500. The apiserver should return a 400 (`BadRequest`) or 422 (`Unprocessable Entity`).
**Release note**:
```release-note
NONE
```
Add interpretPatchError to return appropriate http code
(400 or 422) according to the error type.
We add this function in apiserver because we don't want
to mention the http code in apimachinery. The apimachinery
code is also used in kubectl. The client should not return
a server error.
Add a test to validate the http error code and error message.
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Support api chunking in kubectl get
This enables chunking in the resource builder to make it easy to
retrieve resources in pages and visit partial result sets. This adds
`--chunk-size` to `kubectl get` only so that users can get comfortable
with the use of chunking in beta. Future changes will enable chunking
for all CLI commands so that bulk actions can be performed more
efficiently.
```
$ kubectl get pods --all-namespaces
... print batch of 500 pods ...
... print second batch of 500 pods ...
...
```
@kubernetes/sig-cli-pr-reviews @kubernetes/sig-api-machinery-pr-reviews
```release-note
`kubectl get` will by default fetch large lists of resources in chunks of up to 500 items rather than requesting all resources up front from the server. This reduces the perceived latency of managing large clusters since the server returns the first set of results to the client much more quickly. A new flag `--chunk-size=SIZE` may be used to alter the number of items or disable this feature when `0` is passed. This is a beta feature.
```
The DestroyFunc functions returned by generic.NewRawStorage is never
called when we do a StartTestServer() in the test suite. For a quick
hack for now, added TrackStorageCleanup/RegisterStorageCleanup and
CleanupStorage. Note that unless TrackStorageCleanup is called (which
is called only from the test suite) the other two methods are
no-ops essentially. So no change in behavior at runtime. This vastly
brings down the number of goroutines that are left behind when this
test is executed and should reduce if not eliminate the flakiness
of TestCRD
