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Move to a structured status for dynamic kubelet config
This PR updates dynamic Kubelet config to use a structured status, rather than a node condition. This makes the status machine-readable, and thus more useful for config orchestration.
Fixes: #56896
```release-note
The status of dynamic Kubelet config is now reported via Node.Status.Config, rather than the KubeletConfigOk node condition.
```
Updates dynamic Kubelet config to use a structured status, rather than a
node condition. This makes the status machine-readable, and thus more
useful for config orchestration.
Fixes: #56896
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Actually support service `publishNotReadyAddresses`
This was added and the annotation was deprecated, but it was never
implemented.
xref #63741
**Release note**:
```release-note
The annotation `service.alpha.kubernetes.io/tolerate-unready-endpoints` is deprecated. Users should use Service.spec.publishNotReadyAddresses instead.
```
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Create pkg/scheduling/apis/v1beta1 and move priorityClass to beta
**What this PR does / why we need it**:
This is for creating pkg/apis/scheduling/v1beta1 so that priorityClasses could be moved to beta.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Part of #57471
**Special notes for your reviewer**:
/cc @bsalamat @aveshagarwal
**Release note**:
```release-note
The `PriorityClass` API is promoted to `scheduling.k8s.io/v1beta1`
```
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CRD Status subresource support get+update+patch
CRD Status previously only supports PUT and returns 405 on GET and PATCH
/assign @sttts
/sig api-machinery
**Release note**:
```release-note
CustomResourceDefinitions Status subresource now supports GET and PATCH
```
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explicit kubelet config key in Node.Spec.ConfigSource.ConfigMap
This makes the Kubelet config key in the ConfigMap an explicit part of
the API, so we can stop using magic key names.
As part of this change, we are retiring ConfigMapRef for ConfigMap.
```release-note
You must now specify Node.Spec.ConfigSource.ConfigMap.KubeletConfigKey when using dynamic Kubelet config to tell the Kubelet which key of the ConfigMap identifies its config file.
```
This makes the Kubelet config key in the ConfigMap an explicit part of
the API, so we can stop using magic key names.
As part of this change, we are retiring ConfigMapRef for ConfigMap.
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Indicate clusterrolebinding, rolebinding subjects are optional fields
**What this PR does / why we need it**: With this PR, clusterrolebinding and rolebinding subjects are marked optional instead of required. Currently we cannot create clusterrolebinding and rolebinding with subjects are empty using `kubectl create/apply/replace -f`.
```
$ kubectl create rolebinding test --clusterrole view
rolebinding "test" created
$ kubectl get rolebinding test -o yaml
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
creationTimestamp: 2018-03-02T06:58:16Z
name: test
namespace: default
resourceVersion: "5606612"
selfLink: /apis/rbac.authorization.k8s.io/v1/namespaces/default/rolebindings/test
uid: 155c5c29-1de7-11e8-9f6f-fa163ec89f2a
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: view
subjects: null
$ kubectl get rolebinding test -o yaml | kubectl replace -f -
error: error validating "STDIN": error validating data: ValidationError(RoleBinding): missing required field "subjects" in io.k8s.api.rbac.v1.RoleBinding; if you choose to ignore these errors, turn validation off with --validate=false
```
**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**: This is a same issue with https://github.com/kubernetes/kubernetes/issues/59403. /cc @liggitt
**Release note**:
```release-note
NONE
```
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Added MatchFields to NodeSelectorTerm
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
part of #61410
**Special notes for your reviewer**:
According to the discussion at #61410 , we'd like to introduce a new selector term for node's field.
**Release note**:
```release-note
Added `MatchFields` to `NodeSelectorTerm`; in 1.11, it only support `metadata.name`.
```
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update comments for local volume
**What this PR does / why we need it**:
**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 # https://github.com/kubernetes/kubernetes/issues/62278
**Special notes for your reviewer**:
/assign @jsafrane @msau42
**Release note**:
```release-note
NONE
```
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Deprecate PSP-related types in extensions/v1beta1
**What this PR does / why we need it**:
This PR deprecates PSP-related types in `extensions/v1beta1` API Group and suggests to use their versions from `policy/v1beta1`. This is a part of PSP migration away from `extensions` API Group.
**Which issue(s) this PR fixes**:
Addressed to https://github.com/kubernetes/features/issues/5
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Allow including both podSelector and namespaceSelector in a NetworkPolicyPeer
Updates NetworkPolicy API docs and validation to allow podSelector and namespaceSelector to be specified together in a NetworkPolicyPeer
Fixes#58637
**Release note**:
```release-note
NetworkPolicies can now target specific pods in other namespaces by including both a namespaceSelector and a podSelector in the same peer element.
```
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update Mount propagation version in comment
**What this PR does / why we need it**:
Mount propagation feature was moved to beta in PR [#59252](https://github.com/kubernetes/kubernetes/pull/59252)， so update the comment.
**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#60657
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Prevent webhooks from affecting admission requests for WebhookConfiguration objects
**What this PR does / why we need it**:
As it stands now webhooks can be added to the system which make it impossible for a user to remove that webhook, or two webhooks could be registered which make it impossible to remove each other.
The first commit of this will add a test to make sure webhook deletion is never blocked by a webhook. This test will fail until the second commit is added which will prevent webhooks from affecting admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects in the admissionregistration.k8s.io group
- [x] Test that webhook deletion is never blocked by a webhook ([test fails before second commit](https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/pr-logs/pull/59840/pull-kubernetes-e2e-gce/23731/))
- [x] Prevent webhooks from being called on admission requests for [Validating|Mutating]WebhookConfiguration objects
- [x] Document this new behavior maybe in another PR
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Part of fixing #59124 (Verifies that it can remove the broken webhook.)
**Release note**:
```release-note
ValidatingWebhooks and MutatingWebhooks will not be called on admission requests for ValidatingWebhookConfiguration and MutatingWebhookConfiguration objects in the admissionregistration.k8s.io group
```
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Fix the broken link in Markdown
**What this PR does / why we need it**: Fix the broken link in Markdown
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Promote configurable pod resolv.conf to Beta and add an e2e test
**What this PR does / why we need it**:
Feature issue: https://github.com/kubernetes/features/issues/504
There is no semantic changes. `CustomPodDNS` feature gate will be turned on by default.
**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#56521
**Special notes for your reviewer**:
/assign @bowei @thockin
**Release note**:
```release-note
Adds BETA support for `DNSConfig` field in PodSpec and `DNSPolicy=None`.
```
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Adding credentials support for k8s core CSI
PR implements changes proposed in: https://github.com/kubernetes/community/pull/1816
```release-note
CSI now allows credentials to be specified on CreateVolume/DeleteVolume, ControllerPublishVolume/ControllerUnpublishVolume, and NodePublishVolume/NodeUnpublishVolume operations
```
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Allow to specify categories for custom resources
Allow to specify categories for custom resources so that we can get it working with `kubectl get all`.
Adds a new field `Categories` in the CRD spec.
**Release note**:
```release-note
Custom resources can be listed with a set of grouped resources (category) by specifying the categories in the CustomResourceDefinition spec. Example: They can be used with `kubectl get all`, where `all` is a category.
```
/cc sttts liggitt deads2k
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Refactor service storage to remove registry wrapper
This exposes the correct table exporter to the API endpoint, which is a prereq for server side GET to beta. Removing the use of the registry simplifies a few complex changes but results in test abstractions changing.
Part of #58536
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Update reclaim policy documentation
**What this PR does / why we need it**:
Documentation is out of date and doesn't mention `Delete` policy. Also `Recycle` is deprecated.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixeskubernetes/website#7469
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Add external metric type to HPA API
**What this PR does / why we need it**:
Add external metric type to HPA API proposed in xref https://github.com/kubernetes/community/pull/1801
**Release note**:
```release-note
Allows HorizontalPodAutoscaler to use global metrics not associated with any Kubernetes object (for example metrics from a hoster service running outside of Kubernetes cluster).
```
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Make CSI volume attributes first class
**What this PR does / why we need it**:
Move CSI volume attributes from PV annotation to CSI volume source first class field
**Release note**:
```release-note
NONE
```
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apiextensions: add subresources for custom resources
Fixes#38113Fixes#58778
**Related**:
- Proposal: https://github.com/kubernetes/community/pull/913
- For custom resources to work with `kubectl scale`: https://github.com/kubernetes/kubernetes/pull/58283
**Add types**:
- Add `CustomResourceSubResources` type to CRD.
- Fix proto generation for `CustomResourceSubResourceStatus`: https://github.com/kubernetes/kubernetes/pull/55970.
- Add feature gate for `CustomResourceSubResources`.
- Update CRD strategy: if feature gate is disabled, this feature is dropped (i.e. set to `nil`).
- Add validation for `CustomResourceSubResources`:
- `SpecReplicasPath` should not be empty and should be a valid json path under `.spec`. If there is no value under the given path in the CustomResource, the `/scale` subresource will return an error on GET.
- `StatusReplicasPath` should not be empty and should be a valid json path under `.status`. If there is no value under the given path in the CustomResource, the status replica value in the /scale subresource will default to 0.
- If present, `LabelSelectorPath` should be a valid json path. If there is no value under `LabelSelectorPath` in the CustomResource, the status label selector value in the `/scale` subresource will default to the empty string.
- `ScaleGroupVersion` should be `autoscaling/v1`.
- If `CustomResourceSubResources` is enabled, only `properties` is allowed under the root schema for CRD validation.
**Add status and scale subresources**:
- Use helper functions from `apimachinery/pkg/apis/meta/v1/unstructured/helpers.go`.
- Improve error handling: https://github.com/kubernetes/kubernetes/pull/56563, https://github.com/kubernetes/kubernetes/pull/58215.
- Introduce Registry interface for storage.
- Update storage:
- Introduce `CustomResourceStorage` which acts as storage for the custom resource and its status and scale subresources. Note: storage for status and scale is only enabled when the feature gate is enabled _and_ the respective fields are enabled in the CRD.
- Introduce `StatusREST` and its `New()`, `Get()` and `Update()` methods.
- Introduce `ScaleREST` and its `New()`, `Get()` and `Update()` methods.
- Get and Update use the json paths from the CRD and use it to return an `autoscaling/v1.Scale` object.
- Update strategy:
- In `PrepareForCreate`,
- Clear `.status`.
- Set `.metadata.generation` = 1
- In `PrepareForUpdate`,
- Do not update `.status`.
- If both the old and new objects have `.status` and it is changed, set it back to its old value.
- If the old object has a `.status` but the new object doesn't, set it to the old value.
- If old object did not have a `.status` but the new object does, delete it.
- Increment generation if spec changes i.e. in the following cases:
- If both the old and new objects had `.spec` and it changed.
- If the old object did not have `.spec` but the new object does.
- If the old object had a `.spec` but the new object doesn't.
- In `Validate` and `ValidateUpdate`,
- ensure that values at `specReplicasPath` and `statusReplicasPath` are >=0 and < maxInt32.
- make sure there are no errors in getting the value at all the paths.
- Introduce `statusStrategy` with its methods.
- In `PrepareForUpdate`:
- Do not update `.spec`.
- If both the old and new objects have `.spec` and it is changed, set it back to its old value.
- If the old object has a `.spec` but the new object doesn't, set it to the old value.
- If old object did not have a `.spec` but the new object does, delete it.
- Do not update `.metadata`.
- In `ValidateStatusUpdate`:
- For CRD validation, validate only under `.status`.
- Validate value at `statusReplicasPath` as above. If `labelSelectorPath` is a path under `.status`, then validate it as well.
- Plug into the custom resource handler:
- Store all three storage - customResource, status and scale in `crdInfo`.
- Use the storage as per the subresource in the request.
- Use the validator as per the subresource (for status, only use the schema for `status`, if present).
- Serve the endpoint as per the subresource - see `serveResource`, `serveStatus` and `serveScale`.
- Update discovery by adding the `/status` and `/scale` resources, if enabled.
**Add tests**:
- Add unit tests in `etcd_test.go`.
- Add integration tests.
- In `subresources_test.go`, use the [polymporphic scale client](https://github.com/kubernetes/kubernetes/tree/master/staging/src/k8s.io/client-go/scale) to get and update `Scale`.
- Add a test to check everything works fine with yaml in `yaml_test.go`.
**Release note**:
```release-note
`/status` and `/scale` subresources are added for custom resources.
```
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Marking CSIPersistentVolumeSource as Beta
**What this PR does / why we need it**:
This PR marks the `CSIPersistentVolumeSource` type as being `Beta`
**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#58718
```release-note
Move CSI PersistentVolumes to Beta
```
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