Automatic merge from submit-queue
Note equivalence class for dev and other fix
**What this PR does / why we need it**:
1. Add a note for predicate developers to respect equivalence class design
2. Add comments and re-ordered the related data structure, ref https://github.com/kubernetes/community/pull/1031
3. Fix some nits (typo, code length etc)
**Special notes for your reviewer**:
**Release note**:
```release-note
Scheduler predicate developer should respect equivalence class cache
```
Automatic merge from submit-queue
Add pod preemption to the scheduler
**What this PR does / why we need it**:
This is the last of a series of PRs to add priority-based preemption to the scheduler. This PR connects the preemption logic to the scheduler workflow.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#48646
**Special notes for your reviewer**:
This PR includes other PRs which are under review (#50805, #50405, #50190). All the new code is located in 43627afdf9.
**Release note**:
```release-note
Add priority-based preemption to the scheduler.
```
ref/ #47604
/assign @davidopp
@kubernetes/sig-scheduling-pr-reviews
Automatic merge from submit-queue (batch tested with PRs 49133, 51557, 51749, 50842, 52018)
add controller permissions to set blockOwnerDeletion
fixes https://github.com/kubernetes/kubernetes/issues/51970
`blockOwnerDeletion` requires delete permissions on the owner object. This adds that permission for our controllers.
@kubernetes/sig-auth-misc
```release-note
The OwnerReferencesPermissionEnforcement admission plugin now requires `update` permission on the `finalizers` subresource of the referenced owner in order to set `blockOwnerDeletion` on an owner reference.
```
Modifies the VolumeZonePredicate to handle a PV that belongs to more
then one zone or region. This is indicated by the zone or region label
value containing a comma separated list.
Introduce feature gate for expanding PVs
Add a field to SC
Add new Conditions and feature tag pvc update
Add tests for size update via feature gate
register the resize admission plugin
Update golint failures
Automatic merge from submit-queue (batch tested with PRs 51805, 51725, 50925, 51474, 51638)
Limit events accepted by API Server
**What this PR does / why we need it**:
This PR adds the ability to limit events processed by an API server. Limits can be set globally on a server, per-namespace, per-user, and per-source+object. This is needed to prevent badly-configured or misbehaving players from making a cluster unstable.
Please see https://github.com/kubernetes/community/pull/945.
**Release Note:**
```release-note
Adds a new alpha EventRateLimit admission control that is used to limit the number of event queries that are accepted by the API Server.
```
Automatic merge from submit-queue (batch tested with PRs 45724, 48051, 46444, 51056, 51605)
Add selfsubjectrulesreview in authorization
**What this PR does / why we need it**:
**Which issue this PR fixes**: fixes#47834#31292
**Special notes for your reviewer**:
**Release note**:
```release-note
Add selfsubjectrulesreview API for allowing users to query which permissions they have in a given namespace.
```
/cc @deads2k @liggitt
Automatic merge from submit-queue (batch tested with PRs 50381, 51307, 49645, 50995, 51523)
Update defaults.go
**What this PR does / why we need it**:
This PR is a TODO
Add explain about TaintTolerationPriority function.
**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
```
The EventRateLimit plug-in limits the number of events that the API Server
will accept in a given time period. It allows for server-wide, per-namespace,
per-user,and per-source+object rate limiting.
Automatic merge from submit-queue (batch tested with PRs 51632, 51055, 51676, 51560, 50007)
[Scheduler] Fix typo in info message
Signed-off-by: sakeven <jc5930@sina.cn>
**What this PR does / why we need it**:
Missed a `'` in info message.
**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 51574, 51534, 49257, 44680, 48836)
update scheduler to return structured errors instead of process exit
The scheduler Run method returns an error that is properly handled at higher levels. Instead of existing the process, we should return the error and handle it at higher level logic to allow testing of error conditions and composition of commands. The changes are relatively minor.
@sjenning @aveshagarwal
Automatic merge from submit-queue (batch tested with PRs 51480, 49616, 50123, 50846, 50404)
getHashEquivalencePod should return if equivalence pod is found
Signed-off-by: sakeven <jc5930@sina.cn>
**What this PR does / why we need it**:
getHashEquivalencePod should return if equivalence pod is found, rather than simply check equivalenceHash equals to 0 later.
**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 51707, 51662, 51723, 50163, 51633)
Change SizeLimit to a pointer
This PR fixes issue #50121
```release-note
The `emptyDir.sizeLimit` field is now correctly omitted from API requests and responses when unset.
```
Automatic merge from submit-queue
Add local ephemeral storage support in LimitRange
**Special notes for your reviewer**:
For a single local ephemeral storage resource
xref #43607
**Release note**:
```release-note
Add local ephemeral storage support to LimitRange
```
/assign @jingxu97
cc @ddysher
Automatic merge from submit-queue (batch tested with PRs 51439, 51361, 51140, 51539, 51585)
[Scheduler] regroup imports
Signed-off-by: sakeven <jc5930@sina.cn>
**What this PR does / why we need it**:
>Imports are organized in groups, with blank lines between them. The standard library packages are always in the first group.
**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 47054, 50398, 51541, 51535, 51545)
allow disabling the scheduler port
Unlike the `kube-apiserver`, the scheduler can function without exposing a status port. This provides the option to disable it by explicitly passing a `-1`. This does not change default behavior.
@aveshagarwal
Automatic merge from submit-queue (batch tested with PRs 51228, 50185, 50940, 51544, 51543)
Task 4: Ignored node condition predicates if TaintsByCondition enabled.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: part of #42001
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 51471, 50561, 50435, 51473, 51436)
Feature gate initializers field
The metadata.initializers field should be feature gated and disabled by default while in alpha, especially since enforcement of initializer permission that keeps users from submitting objects with their own initializers specified is done via an admission plugin most clusters do not enable yet.
Not gating the field and tests caused tests added in https://github.com/kubernetes/kubernetes/issues/51429 to fail on clusters that don't enable the admission plugin.
This PR:
* adds an `Initializers` feature gate, auto-enables the feature gate if the admission plugin is enabled
* clears the `metadata.initializers` field of objects on create/update if the feature gate is not set
* marks the e2e tests as feature-dependent (will follow up with PR to test-infra to enable the feature and opt in for GCE e2e tests)
```release-note
Use of the alpha initializers feature now requires enabling the `Initializers` feature gate. This feature gate is auto-enabled if the `Initialzers` admission plugin is enabled.
```
Automatic merge from submit-queue
Add support to modify precomputed predicate metadata upon adding/removal of a pod
**What this PR does / why we need it**: This PR adds capability to change precomputed predicate metadata and let's us add/remove pods to the precomputed metadata efficiently without the need ot recomputing everything upon addition/removal of pods. This PR is needed as a part of adding preemption logic to the scheduler.
**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**:
To make the review process a bit easier, there are three commits. The cleanup commit is only moving code and renaming some functions, without logic changes.
**Release note**:
```release-note
NONE
```
ref/ #47604
ref/ #48646
/assign @wojtek-t
@kubernetes/sig-scheduling-pr-reviews @davidopp
Automatic merge from submit-queue
Moved node condition filter into a predicates.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50360
**Release note**:
```release-note
A new predicates, named 'CheckNodeCondition', was added to replace node condition filter. 'NetworkUnavailable', 'OutOfDisk' and 'NotReady' maybe reported as a reason when failed to schedule pods.
```
