Automatic merge from submit-queue (batch tested with PRs 54604, 55781, 55806, 55935, 55991). 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 incorrect dead code.
TolerationToleratesTaint was incorrect: if the toleration.Key is empty and
taint is non-empty, it should not return false. It was also not used anywhere.
The correct implementations are in staging/src/k8s.io/api/core/v1/toleration.go
and pkg/apis/core/v1/helper/helpers.go
**Release note**:
```release-note
NONE
```
/sig scheduling
/sig api-machinery
/kind bug
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New API group for Events.
Fixkubernetes/features#383
cc @shyamjvs
```release-note
Add events.k8s.io api group with v1beta1 API containing redesigned Event type.
```
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Expose single annotation/label via downward API
**What this PR does / why we need it**:
https://github.com/kubernetes/community/blob/master/contributors/design-proposals/node/annotations-downward-api.md
Support exposing single annotation via both env and volume downward API using the following syntax:
```
metadata.annotations['key']
metadata.labels['key']
```
**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 #
#31218
**Special notes for your reviewer**:
This PR takes over the work in https://github.com/kubernetes/kubernetes/pull/41648.
**Release note**:
```
A single value in metadata.annotations/metadata.labels can be passed into the containers via Downward API
```
/assign @thockin @vishh
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Removed opaque integer resources (deprecated in v1.8)
**What this PR does / why we need it**:
* Remove opaque integer resources (OIR) support from the code base. This feature was deprecated in v1.8 and replaced by Extended Resources (ER).
**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#55102
**Release note**:
```release-note
Remove opaque integer resources (OIR) support (deprecated in v1.8.)
```
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Initial basic bootstrap-checkpoint support
**What this PR does / why we need it**:
Adds initial support for Pod checkpointing to allow for controlled recovery of the control plane during self host failure conditions.
fixes#49236
xref https://github.com/kubernetes/features/issues/378
**Special notes for your reviewer**:
Proposal is here: https://docs.google.com/document/d/1hhrCa_nv0Sg4O_zJYOnelE8a5ClieyewEsQM6c7-5-o/edit?ts=5988fba8#
1. Controlled tests work, but I have not tested the self hosted api-server recovery, that requires validation and logs. /cc @luxas
2. In adding hooks for checkpoint manager much of the tests around basicpodmanager appears to be stub'd. This has become an anti-pattern in the code and should be avoided.
3. I need a node-e2e to ensure consistency of behavior.
**Release note**:
```
Add basic bootstrap checkpointing support to the kubelet for control plane recovery
```
/cc @kubernetes/sig-cluster-lifecycle-misc @kubernetes/sig-node-pr-reviews
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Add Custom Pod DNS to Kubernetes API
**What this PR does / why we need it**:
Ref:
- Feature issue: https://github.com/kubernetes/features/issues/504
- Proposal: https://github.com/kubernetes/community/pull/1276
This PR adds the relevant APIs, validation check and the underlying kubelet changes.
**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 #NONE
**Special notes for your reviewer**:
/sig network
@kubernetes/sig-network-api-reviews
/assign @bowei @thockin
**Release note**:
```release-note
Add DNSConfig field to PodSpec and support "None" mode for DNSPolicy (Alpha).
```
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ResourceQuota support for Hugepages
**What this PR does / why we need it**:
Hugepage resourceQuota support
**Which issue this PR fixes**
fixes#53672 ResourceQuota part
**Special notes for your reviewer**:
What I'm concerned most is the change in quota evaluator:
Rather than add check especially for resource hugage, I would prefer add a check list, that could be easily extended by adding corresponding prefix into the list (As far as I know, pluginResources will also support ResourceQuota in later versions)
@derekwaynecarr What's your opinion?
/cc @derekwaynecarr
**Release note**:
```release-note
NONE
```
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Refactor iSCSI PV spec to use SecretReference
**What this PR does / why we need it**:
Use SecretReference in iSCSI PV spec
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes https://github.com/kubernetes-incubator/external-storage/issues/321
**Special notes for your reviewer**:
@liggitt
**Release note**:
```release-note
iSCSI Persistent Volume Sources can now reference CHAP Secrets in namespaces other than the namespace of the bound Persistent Volume Claim
```
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Clarify ExternalNames are hostnames
Updates the documentation for ExternalName to clarify
that they adhere RFC-1123 hostname and are not DNS names.
Fixes#52266
**Release note**:
```release-note
```
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If mountPath is missing, prefix with root dir.
If `mountPath` is not absolute, add the os-specific root directory as a prefix.
Ref: https://github.com/kubernetes/kubernetes/pull/51240https://groups.google.com/forum/#!topic/kubernetes-sig-storage/k_0Wr2kYkpU
@thockin @saad-ali @andyzhangx
Note to @thockin I left the validation in place, in seems like it is a net win, since it will give a decent
error message to most people, but the fall-back defaulting is there if it doesn't catch 'c:'
I'm happy to rip out the validation if that is preferable to everyone. Let me know.
```release-note
If a non-absolute mountPath is passed to the kubelet, prefix it with the appropriate root path.
```
AdmissionResponse allows mutating webhook to send apiserver a json patch
to mutate the object.
This reflects the imperative nature of AdmissionReview. It adds
AdmissionRequest and AdmissionResponse in place of status/spec.
The AdmissionResponse the allows the mutating webhook
to send back a json path with the mutated version of the requested
object.
Fixed the integration test to clean up properly.
Switched test image to 1.8v5 to reflect API changes.
Make sure to cache test framework client for cleaup test code.
Switched to pointer for patch type.
Factored in @liggitt's feedback.
Factored in @lavalamp's feedback.
TolerationToleratesTaint was incorrect: if the toleration.Key is empty and
taint is non-empty, it should not return false. It was also not used anywhere.
The correct implementations are in staging/src/k8s.io/api/core/v1/toleration.go
and pkg/apis/core/v1/helper/helpers.go
Automatic merge from submit-queue (batch tested with PRs 55798, 49579, 54862, 55188, 51990). 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>.
add back defaulting for parameter decoding
At the beginning of 1.7, we removed the last "conversion causes defaulting". This broke the "default to true" behavior for exec and attach options, but we didn't notice. This removes the broken defaulter (you can default a non-point bool to true on an object) and adds back defaulting to parameter codecs.
@k8s-mirror-api-machinery-misc @lavalamp @smarterclayton
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Add VolumeBindingMode to StorageClass API
**What this PR does / why we need it**:
Adds a new field `VolumeBindingMode` to `StorageClass`, as specified in kubernetes/community#1168
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#54434
**Special notes for your reviewer**:
API changes only. The scheduler and PV controller work will be submitted as a separate PR.
**Release note**:
NONE
@kubernetes/sig-storage-pr-reviews
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remove duplicated import
**Release note**:
```release-note
NONE
```
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Remove the comparison of ReadyReplicas to zero.
**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)*:
ref: #43465
**Special notes for your reviewer**:
AFAIK, we have already stopped supporting upgrades from 1.5.
cc @fejta @krzyzacy
**Release note**:
```release-note
NONE
```
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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
```
Introduce the v1alpha1 version to the Kubernetes storage API. And add a
new VolumeAttachment object to that version. This object will initially
be used only by the new CSI Volume Plugin. Eventually existing volume
plugins can be refactored to use it too.
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Validate that PV capacity and PVC capacity requests are positive, greater than 0
**What this PR does / why we need it**: Zero (0) capacity PVs cause related pods to fail, and zero (0) capacity PVCs create zero (0) capacity PVs.
**Which issue(s) this PR fixes** :
Fixes#55553
**Special notes for your reviewer**:
**Release note**:
```release-note
Validate positive capacity for PVs and PVCs.
```
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Enforce use of fixed size int types in the API
Changes 'int' to 'int32', enforced by import_known_versions_test
Follow up to PR #53402
**What this PR does / why we need it**:
This PR changes a few fields within the API from 'int' to 'int32' and is now enforced by import_known_versions_test. We need this so integer fields are the same size regardless of $GOARCH.
**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
```
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aggregate cluster roles
xref https://github.com/kubernetes/community/pull/1219https://github.com/kubernetes/features/issues/502
This is a pull with API types, a controller, and a demonstration of how to move admin, edit, and view. Once we agree on the shape, I'll
I added
```yaml
aggregationRule:
clusterRoleSelectors:
- matchLabels:
rbac.authorization.k8s.io/aggregate-to-admin: true
```
to the `ClusterRole`. A controller then goes and gathers all the matching ClusterRoles and sets the `rules` to the union of matching cluster roles.
@kubernetes/sig-auth-pr-reviews
```release-note
RBAC ClusterRoles can now select other roles to aggregate
```
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Revert "Validate if service has duplicate targetPort"
**What this PR does / why we need it**:
Services allow duplicate targetPort. This reverts commit ce54d9072b.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#53526
**Special notes for your reviewer**:
/cc @thockin @jhorwit2
**Release note**:
```release-note
NONE
```
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Make sure that storage request of pvc is not zero
I do not know whether we should add the checking zero logic to `ValidateResourceQuantityValue`.
But at lease we should do this when validate PVC. If PVC requests 0Gi storage,it does not make sense to provision that volume.
Volume plugins will not check whether the request of PVC is 0 when they run `CreateVolume` or `CreateImage` called by `Provision()`
**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#55163
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Mark BetaStorageClassAnnotation as deprecated
**What this PR does / why we need it**:
Mark BetaStorageClassAnnotation as deprecated.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
ref: #51440https://github.com/kubernetes/kubernetes/pull/51440#issuecomment-329594284
**Special notes for your reviewer**:
/cc @wongma7 @msau42
**Release note**:
```release-note
action required: The `storage.k8s.io/v1beta1` API and `volume.beta.kubernetes.io/storage-class` annotation are deprecated. They will be removed in a future release. Please use v1 API and field `v1.PersistentVolumeClaim.Spec.StorageClassName`/`v1.PersistentVolume.Spec.StorageClassName` instead.
```
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Clarify DefaultAddCapabilities behavior
Clarify that capabilities listed in `DefaultAddCapabilities` in the `PodSecurityPolicySpec` need not be repeated in `AllowedCapabilities`.
**Release note**:
```release-note
NONE
```
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add windows mount path test
**What this PR does / why we need it**:
add windows mount path test, this PR is for https://github.com/kubernetes/kubernetes/pull/51240, which should include some tests.
**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#55549
**Special notes for your reviewer**:
**Release note**:
```
none
```
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Add several validation to persistent volume
**What this PR does / why we need it**:
Add several unit test for persistent volume validation
**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
```
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Switch internal scale type to autoscaling, enable apps/v1 scale subresources
xref #49504
* Switch workload internal scale type to autoscaling.Scale (internal-only change)
* Enable scale subresources for apps/v1 deployments, replicasets, statefulsets
```release-note
NONE
```
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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
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Add DaemonSet conditions
**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)*:
xref https://github.com/kubernetes/features/issues/353, #7856
**Special notes for your reviewer**:
A `conditions` field is added to DaemonSetStatus for consistency. No valid DaemonSet condition type is supported yet.
@kubernetes/sig-apps-api-reviews
**Release note**:
```release-note
DaemonSet status now has a new field named "conditions", making it consistent with other workloads controllers.
```
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Improve cronjob concurrency policy doc
**What this PR does / why we need it**:
The CronJob API documentation (https://kubernetes.io/docs/api-reference/v1.8/#cronjobspec-v1beta1-batch) did not clearly state what can be used as `concurrencyPolicy`. Instead, it only says that the default value is "Raw".
**Which issue(s) this PR fixes**:
**Special notes for your reviewer**:
This patch is not changing any code logic but it involves generated "code".
**Release note**:
```release-note
NONE
```
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Refactor kube-scheduler config API, command, and server setup
Refactor the kube-scheduler configuration API, command setup, and server setup according to the guidelines established in #32215 and using the kube-proxy refactor (#34727) as a model of a well factored component adhering to said guidelines.
* Config API: clarify meaning and use of algorithm source by replacing modality derived from bools and string emptiness checks with an explicit AlgorithmSource type hierarchy.
* Config API: consolidate client connection config with common structs.
* Config API: split and simplify healthz/metrics server configuration.
* Config API: clarify leader election configuration.
* Config API: improve defaulting.
* CLI: deprecate all flags except `--config`.
* CLI: port all flags to new config API.
* CLI: refactor to match kube-proxy Cobra command style.
* Server: refactor away configurator.go to clarify application wiring.
* Server: refactor to more clearly separate wiring/setup from running.
Fixes https://github.com/kubernetes/kubernetes/issues/52428.
@kubernetes/api-reviewers
@kubernetes/sig-cluster-lifecycle-pr-reviews
@kubernetes/sig-scheduling-pr-reviews
/cc @ncdc @timothysc @bsalamat
```release-note
The kube-scheduler command now supports a `--config` flag which is the location of a file containing a serialized scheduler configuration. Most other kube-scheduler flags are now deprecated.
```
Refactor the kube-scheduler configuration API, command setup, and server
setup according to the guidelines established in #32215 and using the
kube-proxy refactor (#34727) as a model of a well factored component
adhering to said guidelines.
* Config API: clarify meaning and use of algorithm source by replacing
modality derived from bools and string emptiness checks with an explicit
AlgorithmSource type hierarchy.
* Config API: consolidate client connection config with common structs.
* Config API: split and simplify healthz/metrics server configuration.
* Config API: clarify leader election configuration.
* Config API: improve defaulting.
* CLI: deprecate all flags except `--config`.
* CLI: port all flags to new config API.
* CLI: refactor to match kube-proxy Cobra command style.
* Server: refactor away configurator.go to clarify application wiring.
* Server: refactor to more clearly separate wiring/setup from running.
Fixes#52428.
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Remove duplicated Hairpin constant definition
**What this PR does / why we need it**:
Clean up the hairpin definition in conponent config since it has been remove to [kubelet config](https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/apis/kubeletconfig/types.go#L36)
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
no issue, just clean up the code
**Special notes for your reviewer**:
none
**Release note**:
none
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Workloads V1
**What this PR does / why we need it**: This PR promotes the Deployment, ReplicaSet, and DaemonSet StatefulSet, ControllerRevision kinds to the apps/v1 group version.
https://github.com/kubernetes/features/issues/353
**Special notes for your reviewer**:
There will be at least two followups to this PR. The first to add a scale sub-resource when the correct location is resolved, and the second to deal with Conditions in the workloads API.
While it would have been preferable to move the kinds individually providing a lesser burden on reviewers, this proved impracticable due to the intricacies of version resolution in kubectl for objects of the different kinds in the same group.
```release-note
DaemonSet, Deployment, ReplicaSet, and StatefulSet have been promoted to GA and are available in the apps/v1 group version.
```
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validate ipvs scheduler
**What this PR does / why we need it**:
validate ipvs scheduler options
**Which issue this PR fixes**:
closes#53975
**Special notes for your reviewer**:
It depends on work of #53780.
**Release note**:
```release-note
NONE
```
/sig network
/area kube-proxy
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Update many misspelled word initializer
**What this PR does / why we need it**:
fix misspelled word initalizer
**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**:
``` NONE
```
Automatic merge from submit-queue (batch tested with PRs 52556, 52897, 54342). 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 broken links in api after moving proposals to subdirs
**What this PR does / why we need it**:
fix incorrect links in api after kubernetes/community#1010
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes kubernetes/community#918
**Special notes for your reviewer**:
CC @bgrant0607
**Release note**:
```
NONE
```
Automatic merge from submit-queue (batch tested with PRs 53743, 53564). 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>.
Polymorphic Scale Client
This PR introduces a polymorphic scale client based on discovery information that's able to scale scalable resources in arbitrary group-versions, as long as they present the scale subresource in their discovery information.
Currently, it supports `extensions/v1beta1.Scale` and `autoscaling/v1.Scale`, but supporting other versions of scale if/when we produce them should be fairly trivial.
It also updates the HPA to use this client, meaning the HPA will now work on any scalable resource, not just things in the `extensions/v1beta1` API group.
**Release note**:
```release-note
Introduces a polymorphic scale client, allowing HorizontalPodAutoscalers to properly function on scalable resources in any API group.
```
Unblocks #29698
Unblocks #38756
Unblocks #49504Fixes#38810
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>.
clean up pkg/apis/meta/v1/time.go
This file has been moved to staging/src/k8s.io/apimachinery/pkg/apis/meta/v1/time.go
**Release note**:
```
NONE
```
/assign @sttts
This updates the HPA controller to use the polymorphic scale client from
client-go. This should enable HPAs to work with arbitrary scalable
resources, instead of just those in the extensions API group (meaning we
can deprecate the copy of ReplicationController in extensions/v1beta1).
It also means that the HPA controller now pays attention to the
APIVersion field in `scaleTargetRef` (more specifically, the group part
of it).
Note that currently, discovery information on which resources are
available where is only fetched once (the first time that it's
requested). In the future, we may want a refreshing discovery REST
mapper.
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>.
allow fail close webhook admission
Webhook admission needs to allow failing closed. Even in an alpha state, I don't want to be one DDOS away from having an exposed cluster.
/assign caesarxuchao
/assign sttts
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>.
allow */subresource in rbac policy rules
xref #29698
xref #38756
xref #49504
xref #38810
Allow `*/subresource` format in RBAC policy rules to support polymorphic subresources like `*/scale` for HPA.
@DirectXMan12 fyi
```release-note
RBAC PolicyRules now allow resource=`*/<subresource>` to cover `any-resource/<subresource>`. For example, `*/scale` covers `replicationcontroller/scale`.
```
