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>.
Introduce new `VolumeAttachment` API Object
**What this PR does / why we need it**:
Introduce a new `VolumeAttachment` API Object. This object will be used by the CSI volume plugin to enable external attachers (see design [here](https://github.com/kubernetes/community/pull/1258). In the future, existing volume plugins can be refactored to use this object as well.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: Part of issue https://github.com/kubernetes/features/issues/178
**Special notes for your reviewer**:
None
**Release note**:
```release-note
NONE
```
Kubernetes-commit: ebe8ea73fd1a961779242dfbb629befa153e96fc
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remove redundant code in admission initializer
**What this PR does / why we need it**:
remove unused return error in `k8s.io\kubernetes\staging\src\k8s.io\apiserver\pkg\admission\initializer\initializer.go`
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Kubernetes-commit: a43c6e41d58efff5308120f74eac339eb631e9bc
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apiserver shutdown gracefully
**What this PR does / why we need it**:
apiserver shutdown gracefully and wait all non-long running requests finish before process exit.
**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#54793
**Special notes for your reviewer**:
remove waitGroup, use atomic to count.
**Release note**:
```release-note
NONE
```
Kubernetes-commit: d12d711ba67af9c63c6497a3d73357729a76e9ab
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Add MutatingWebhookConfiguration type
As part of Mutating Webhook support, this PR adds the configuration for Mutating webhooks. It also renames existing ReadOnly webhook configurations from ExternalAdmissionHookConfiguration to ValidatingWebhookConfiguration. As part of the process some sub-types are also renamed.
Lastly, the mutating webhook configurations are sorted by name to make the serial executing of them deterministic.
ref: https://github.com/kubernetes/features/issues/492
Kubernetes-commit: 61f210859d9c4bd64af254ba696f6f693596ced9
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audit policy: reject audit policy files without apiVersion and kind
Closes https://github.com/kubernetes/kubernetes/issues/54254
/cc @sttts @CaoShuFeng @crassirostris @tallclair
/sig auth
/kind cleanup
```release-note
Audit policy files without apiVersion and kind are treated as invalid.
```
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apiserver: remove scheme arg from NewUnsecuredEtcd3TestClientServer
Not necessary anymore.
Kubernetes-commit: eb578813cba0e835c1079c5b1b570c16e8a3dd47
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vendor update: github.com/golang/protobuf
When I'm working on PR: https://github.com/kubernetes/kubernetes/pull/54782, I met a problem here: https://github.com/golang/protobuf/issues/372, which I think we need to update our vendor of protobuf
and I ask Dr. Stefan for suggestion, here is our coversation
shiywang [5:09 PM]
hi, Dr. Stefan i'm sorry to bother, I have a simple question, I was working on a pr which need to use protobuf custom field, and I run into this problem here: https://github.com/golang/protobuf/issues/372 which I think is due to our codebase's protobuf vendor is too old `vendor/github.com/golang/protobuf`, do you think I can update that vendor to lastest one ? also I noticed there's also an extend package called `vendor/github.com/gogo/protobuf/proto` what's the releationship between those two ? which one should I update ?
sttts
[5:11 PM]
hi
[5:11]
don't know much about the proto internals either, @claytonc is probably the only one
[5:12]
create a vendor/github.com/golang/protobuf bump PR and assign it to him
shiywang [5:12 PM]
sounds good, thank you sir
so
/assign @smarterclayton
for suggestion, thanks
```release-note
NONE
```
Kubernetes-commit: 5b7ce60fcebea445b7852d8dc2bce141a2bd7a3a
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apiserver: fix Cacher.Stop() race
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[trival]remove duplicated code from unit test
**Release note**:
```
NONE
```
Kubernetes-commit: 462d5ed1067d14f68c4bdaeb9469c37eab0172ea
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refactor admission handler and add UT
**What this PR does / why we need it**:
remove Redundant code, and add UT case.
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Kubernetes-commit: 85a6ec7b610454d046589ed0610209b832188e42
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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
```
Kubernetes-commit: 55e216f56eac0082acc6be655d9ae09cf9ba38a8
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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
Kubernetes-commit: 7aed66305127904a874289a1c78f5b5d5ad6b80c
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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
```
Kubernetes-commit: 816f2f460531cc1b2ed999962b64f930a7fc39fd
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Shutdown http handlers before shutting down audit backend
**What this PR does / why we need it**:
Currently, audit backend is shut down before http handlers stop processing requests, so some audit events can be dropped in case of batching webhook.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50781
**Special notes for your reviewer**:
**Release note**:
```release-note
Shutdown http handlers in kube-apiserver before shutting down audit backend.
```
Kubernetes-commit: 7a6a58f4444c60a9b3fefe335a303f0c230d8f10
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Use the core client with explicit version globally
**What this PR does / why we need it**:
As mentioned in #49535 and #50605, we want to have a global replace to use core client with explicit version.
**Which issue this PR fixes**: fixes#49535
**Special notes for your reviewer**:
The actual type of clientSet.Core() is already the same with clientSet.CoreV1(), so it should be safe replacement.
The places that clientSet.Core() are still in use are identified by IDE "find usages", and changes are made with one time global replace. Hopefully there will be none left after this PR merged.
Let me know if this PR is too big to review, I can split it into some smaller ones.
/cc @kubernetes/sig-api-machinery-pr-reviews
/cc @k82cn @sttts
**Release note**:
```release-note
none
```
Kubernetes-commit: d8ec716f4d7cabc8fa1fc825b20feffe105e99a9
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move webhook admission to generic apiserver
This builds on https://github.com/kubernetes/kubernetes/pull/54414.
It moves the admission webhook into the generic apiserver. It also allows the injection of a server managed way to override the rest.Config used for a particular service. This makes for an easier point to allow auto-configuration of the kube-apiserver to loopback to itself as a special case for kubernetes.default.svc.
@kubernetes/sig-api-machinery-pr-reviews
```release-note
the generic admission webhook is now available in the generic apiserver
```
Kubernetes-commit: 9ec88d0d45a7273bfbac70ad51279112eeeda00a
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[OpenStack]Remove the LbaasV1 of OpenStack cloud provider
The Neutron LbaasV1 has been declared obsolete, LbaasV2 is a
better choice.
So let's remove the codes of LbaasV1, only support LbaasV2.
xref: #52609
Reference OpenStack doc:
https://docs.openstack.org/mitaka/networking-guide/config-lbaas.html
**Special notes for your reviewer**:
/assign @dims
/assign @anguslees
**Release note**:
```release-note
Remove the LbaasV1 of OpenStack cloud provider, currently only support LbaasV2.
```
Kubernetes-commit: b2b31ada149fb688aea0d62cd58e5416d5fd337b
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audit backend run before http server start and register presShutdown …
…hook
**What this PR does / why we need it**:
1. audit backend run before http server start , prevent coming request audit blocking
2. audit backend use preShutdownHook.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#54286
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Kubernetes-commit: 192bb6262b5a73438d958408f91d198384c3f497
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Update openapi to use kube-openapi code
**What this PR does / why we need it**: OpenAPI code has moved to `github.com/kubernetes/kube-openapi`. Let's use that code as a dependency, since now it's duplicated.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#51823
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
No user visible changes. Just code moving around.
Kubernetes-commit: 507790c9c6f50b580b4409b5ac93b10a24570819
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update gRPC to pick up data race fix
**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#53124
**Special notes for your reviewer**:
**Release note**:
```release-note
update gRPC to v1.6.0 to pick up data race fixgrpc/grpc-go#1316
```
Kubernetes-commit: 70960a5ed785c64df837139a783f89901d7891f1
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update admission webhook to accept client config
Fixes https://github.com/kubernetes/kubernetes/issues/53827
This plumbs a complete client through the plugin initializer for admission webhooks. It achieves parity with our existing webhooks and provides flexibility if people want to do something special or different. Easy things are easy, hard things are possible. This does not change behavior for kube-apiserver.
@kubernetes/sig-auth-api-reviews @kubernetes/sig-api-machinery-bugs
Kubernetes-commit: f07b359e5bd5af8947b32309865dada7043d59e3
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fix typos: remove duplicated word in comments
**What this PR does / why we need it**: Remove the duplicated word `the` in comments
**Which issue this PR fixes** : fixes #
**Special notes for your reviewer**:
```release-note
NONE
```
Kubernetes-commit: 1d8f1e268f18e278b93b3ba06ca3c73604bfdb77
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remove repeated type conversion
**What this PR does / why we need it**:
remove repeated type conversion(convert String to Feature)
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
we just need make this conversion once.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Kubernetes-commit: 7d59b2d3384379a4a7e2f6ba69fde11b9d74bfef
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Update rules_go, repo-infra, and rules_docker dependencies
**What this PR does / why we need it**: several of our bazel dependencies were getting pretty old, since they required bazel 0.5.4+ but there were various failures if we tried to use them with bazel 0.5.4.
Now that bazel 0.6.0 (and 0.6.1) have been out for a while, we can bump our dependencies and get a number of fixes and new functionality.
x-ref #52677 and others
**Special notes for your reviewer**:
* This will now explicitly require bazel 0.6.0+ to build kubernetes.
* Our staging directories are causing some issues for `gazelle`; it wants to set `importpath = "k8s.io/kubernetes/staging/src/k8s.io/blah"` instead of `importpath = "k8s.io/blah"`. I'm not sure what is the correct way to fix this; what we're doing here is pretty weird and nonstandard. I've used a `sed` substitution for now.
* The `-proto=default` option of `gazelle` has a number of bugs right now (https://github.com/bazelbuild/rules_go/issues/888, https://github.com/bazelbuild/rules_go/issues/900, https://github.com/bazelbuild/rules_go/issues/907), so I am forcing the legacy behavior.
**Release note**:
```release-note
NONE
```
/assign @mikedanese @spxtr @BenTheElder
Kubernetes-commit: 77b83e446b4e655a71c315ad3f3890dc2a220ccf
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Make feature gates loadable from a map[string]bool
Command line flag API remains the same. This allows ComponentConfig
structures (e.g. KubeletConfiguration) to express the map structure
behind feature gates in a natural way when written as JSON or YAML.
For example:
KubeletConfiguration Before:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates: "DynamicKubeletConfig=true,Accelerators=true"
```
KubeletConfiguration After:
```
apiVersion: kubeletconfig/v1alpha1
kind: KubeletConfiguration
featureGates:
DynamicKubeletConfig: true
Accelerators: true
```
Fixes: #53024
```release-note
The Kubelet's feature gates are now specified as a map when provided via a JSON or YAML KubeletConfiguration, rather than as a string of key-value pairs.
```
/cc @mikedanese @jlowdermilk @smarterclayton
Kubernetes-commit: df072ca97ee0248968c043759f0016e19911389e
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Enable API chunking and promote to beta for 1.9
All list watchers default to using chunking. The server by default fills pages to avoid low cardinality filters from making excessive numbers of requests. Fix an issue with continuation tokens where a `../` could be used if the feature was enabled.
```release-note
API chunking via the `limit` and `continue` request parameters is promoted to beta in this release. Client libraries using the Informer or ListWatch types will automatically opt in to chunking.
```
Kubernetes-commit: 23cc4dc50ab223751d5a7983faa3fa6b811f2255
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apimachinery: remove ObjectCopier interface(s)
The big commit is a mechanical, transitive removal of the copier interfaces in all structs and function calls.
Kubernetes-commit: aaf14d4619ddae90ec753959053a74967832058c
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Add API version apps/v1, and bump DaemonSet to apps/v1
**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)*: kubernetes/features#484
**Special notes for your reviewer**: This PR targets `master`, as a backup if #53223 (targeting features branch) falls through
@kubernetes/sig-apps-api-reviews
**Release note**:
```release-note
Add API version apps/v1, and bump DaemonSet to apps/v1
```
Kubernetes-commit: fc81ec01e51e6bcda6ed96f0f73799b43634d8d1
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fix some typos in api/types
**What this PR does / why we need it**:
Fix some typos in api/types
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53420
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
Kubernetes-commit: 029ed12b332dc358782a453f9ed904fa16844d8c
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Add an option for turning on/off compaction from apiserver in etcd3 mode
…erver
**What this PR does / why we need it**:
This commit adds an option for controlling request of compaction to
etcd3 from apiserver. There is a situation that apiserver cannot fully
own its etcd cluster (e.g. sharing it with canal). In such a case,
apiserver should have limited access in terms of etcd's auth
functionality so it don't have a privilege to issue compaction
requests. It means that the compaction requests should be issued by
other component and apiserver's compaction requests are needless.
For such use cases, this commit adds a new flag
storagebackend.Config.DoCompaction. If the flag is true (default),
apiserver issues the compaction requests like current behaviour. If it
is false, apiserver doesn't issue the requests.
**Related issue (etcd)**
https://github.com/coreos/etcd/issues/8458
/cc @xiang90 @struz
**Release note:**
```release-note
Add --etcd-compaction-interval to apiserver for controlling request of compaction to etcd3 from apiserver.
```
Kubernetes-commit: 5dfea9e6091a818f90e8df5afcc750b5f01fa9b7
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Ring buffer for shared informer notifications
**What this PR does / why we need it**:
Improves memory allocation for shared informer listeners. Instead of always appending to the slice use as a ring buffer, avoiding reslice operations as long as there is room in the slice. See https://github.com/kubernetes/kubernetes/pull/47045#issuecomment-317621259 for details. This is a follow up PR for #47045.
Results from BenchmarkListener:
```
Current code (from the #47045):
1000000 1540 ns/op 109 B/op 1 allocs/op
```
```
New code:
1000000 1162 ns/op 16 B/op 1 allocs/op
```
**Special notes for your reviewer**:
Only review the last commit, this branch is based on #47045 PR. I'll rebase onto master once it is merged.
**Release note**:
```release-note
NONE
```
/kind enhancement
/sig api-machinery
/cc @deads2k @ncdc
Kubernetes-commit: bb035a2854e690d726ece2f8c5e1b8f4b7aef930
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Add 201/Status to the list of returned objects.
**What this PR does / why we need it**:
Adds 201/202 to the list of codes/objects returned by `POST` and 201 to the list of codes returned by `PUT` requests in Swagger/OpenAPI
**Special notes for your reviewer**:
This helps fix
https://github.com/kubernetes-client/csharp/issues/29
**Release note**:
```release-note
Adds 201/202 to the list of codes/objects returned by `POST` and 201 to the list of codes returned by `PUT` requests in Swagger/OpenAPI
```
Kubernetes-commit: ba4f5ced3cfd30649588b36dea99c8c55433f0b4
Kubernetes Publisher
Saad Ali
Shiyang Wang
hzxuzhonghu
Antoine Pelisse
Maru Newby
David Eads
Shyam JVS
FengyunPan
Di Xu