Automatic merge from submit-queue (batch tested with PRs 45514, 45635)
refactor certificate controller to break it into two parts
Break pkg/controller/certificates into:
* pkg/controller/certificates/approver: containing the group approver
* pkg/controller/certificates/signer: containing the local signer
* pkg/controller/certificates: containing shared infrastructure
```release-note
Break the 'certificatesigningrequests' controller into a 'csrapprover' controller and 'csrsigner' controller.
```
Allow the list of resources the garbage collector controller should
ignore to be customizable, so downstream integrators can add their own
resources to the list, if necessary.
The garbage collector controller currently needs to list, watch, get,
patch, update, and delete resources. Update the criteria for
deletable resources to reflect this.
Tokens controller previously needed a bit of extra help in order to be
safe for concurrent use. The new MutationCache allows it to keep a local
cache and still use a shared informer. The filtering event handler lets
it only see changes to secrets it cares about.
Automatic merge from submit-queue (batch tested with PRs 45374, 44537, 45739, 44474, 45888)
Allow kcm and scheduler to lock on ConfigMaps.
**What this PR does / why we need it**:
Plumbs through the ability to lock on ConfigMaps through the kcm and scheduler.
**Which issue this PR fixes**
Fixes: #44857
Addresses issues with: #45415
**Special notes for your reviewer**:
**Release note**:
```
Add leader-election-resource-lock support to kcm and scheduler to allow for locking on ConfigMaps as well as Endpoints(default)
```
/cc @kubernetes/sig-cluster-lifecycle-pr-reviews @jamiehannaford @bsalamat @mikedanese
Automatic merge from submit-queue (batch tested with PRs 45382, 45384, 44781, 45333, 45543)
Copy internal types to metrics
Supersedes #45306.
#45306 removed the internal types and suggested whoever needs the internal types should define their own copy, and use the code-gen tools to generated the conversion functions. Per offline discussion with @DirectXMan12, we wanted to go that direction but it's not clear where to put the internal types yet. Hence, as a temporary solution, we decided copy the referred client-go/pkg/api types into metrics api to avoid the dependency.
The commit "remove need of registry from custom_metrics/client.go" is similar to what I did to the fake client in an earlier PR. Let me know if you want to put the commit in another PR.
Automatic merge from submit-queue (batch tested with PRs 45304, 45006, 45527)
increase the QPS for namespace controller
The namespace controller is really chatty. Especially to discovery since that involves two requests for every API version available. This bumps the QPS and burst on the namespace controller to avoid being stuck waiting.
Automatic merge from submit-queue (batch tested with PRs 44862, 42241, 42101, 43181, 44147)
Feature/hpa upscale downscale delay configurable
**What this PR does / why we need it**:
Makes "upscale forbidden window" and "downscale forbidden window" duration configurable in arguments of kube-controller-manager. Those are options of horizontal pod autoscaler.
**Special notes for your reviewer**:
Please have a look @DirectXMan12 , the PR as discussed in Slack.
**Release note**:
```
Make "upscale forbidden window" and "downscale forbidden window" duration configurable in arguments of kube-controller-manager. Those are options of horizontal pod autoscaler. Right now are hardcoded 3 minutes for upscale, and 5 minutes to downscale. But sometimes cluster administrator might want to change this for his own needs.
```
Automatic merge from submit-queue
Add support for IP aliases for pod IPs (GCP alpha feature)
```release-note
Adds support for allocation of pod IPs via IP aliases.
# Adds KUBE_GCE_ENABLE_IP_ALIASES flag to the cluster up scripts (`kube-{up,down}.sh`).
KUBE_GCE_ENABLE_IP_ALIASES=true will enable allocation of PodCIDR ips
using the ip alias mechanism rather than using routes. This feature is currently
only available on GCE.
## Usage
$ CLUSTER_IP_RANGE=10.100.0.0/16 KUBE_GCE_ENABLE_IP_ALIASES=true bash -x cluster/kube-up.sh
# Adds CloudAllocator to the node CIDR allocator (kubernetes-controller manager).
If CIDRAllocatorType is set to `CloudCIDRAllocator`, then allocation
of CIDR allocation instead is done by the external cloud provider and
the node controller is only responsible for reflecting the allocation
into the node spec.
- Splits off the rangeAllocator from the cidr_allocator.go file.
- Adds cloudCIDRAllocator, which is used when the cloud provider allocates
the CIDR ranges externally. (GCE support only)
- Updates RBAC permission for node controller to include PATCH
```
Automatic merge from submit-queue
Remove alphaProvisioner in PVController and AlphaStorageClassAnnotation
remove alpha annotation and alphaProvisioner
**Release note**:
```release-note
NONE
```
If CIDRAllocatorType is set to `CloudCIDRAllocator`, then allocation
of CIDR allocation instead is done by the external cloud provider and
the node controller is only responsible for reflecting the allocation
into the node spec.
- Splits off the rangeAllocator from the cidr_allocator.go file.
- Adds cloudCIDRAllocator, which is used when the cloud provider allocates
the CIDR ranges externally. (GCE support only)
- Updates RBAC permission for node controller to include PATCH
Automatic merge from submit-queue (batch tested with PRs 43144, 42671, 43226, 43314, 43361)
don't start controllers against unhealthy master
Operating against an unhealthy apiserver is unpredictable. Some clients like `kubectl` need to be best effort in this regard so that you can debug broken apiservers. Controllers shouldn't run against unhealthy masters.
Automatic merge from submit-queue (batch tested with PRs 43642, 43170, 41813, 42170, 41581)
Enable storage class support in Azure File volume
**What this PR does / why we need it**:
Support StorageClass in Azure file volume
**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
Support StorageClass in Azure file volume
```
Automatic merge from submit-queue (batch tested with PRs 42692, 42169, 42173)
DaemonSet: Respect ControllerRef
**What this PR does / why we need it**:
This is part of the completion of the [ControllerRef](https://github.com/kubernetes/community/blob/master/contributors/design-proposals/controller-ref.md) proposal. It brings DaemonSet into full compliance with ControllerRef. See the individual commit messages for details.
**Which issue this PR fixes**:
This ensures that DaemonSet does not fight with other controllers over control of Pods.
**Special notes for your reviewer**:
**Release note**:
```release-note
DaemonSet now respects ControllerRef to avoid fighting over Pods.
```
cc @erictune @kubernetes/sig-apps-pr-reviews
Automatic merge from submit-queue (batch tested with PRs 42692, 42169, 42173)
Add pprof trace support
Add support for `/debug/pprof/trace`
Can wait for master to reopen for 1.7.
cc @smarterclayton @wojtek-t @gmarek @timothysc @jeremyeder @kubernetes/sig-scalability-pr-reviews
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