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kube-{apiserver,ctrl-mgr}: unify into DeprecatedInsecureServingOptions
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
```
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pkg/util/metrics: make re-registration of RateLimiterMetric non-fatal
In integration tests we might register these metrics multiple times in parallel. Instead of unregistering and making somehow sure those tests can run in parallel, we just make the registration idem-potent.
Prerequisite for controller manager integration tests https://github.com/kubernetes/kubernetes/pull/64149.
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Updated comment for DefaultLoadBalancerName to provide further context
**What this PR does / why we need it**:
Updates the comment for DefaultLoadBalancerName to provide better context and also as a reminder that it should eventually be removed.
**Release note**:
```release-note
NONE
```
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add unit test for pkg/kubeapiserver/options/authentication.go
**What this PR does / why we need it**:
add unit test for pkg/kubeapiserver/options/authentication.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
```
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Use versioned api in kube-proxy
**What this PR does / why we need it**:
Now in kube-proxy someplace still use the internal version api, change to use versioned api.
**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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nits in manager.go
**What this PR does / why we need it**:
just found some nits in the manager.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
```
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scheduler: add metrics to equivalence cache
This adds counters to equiv. cache reads & writes. Reads are labeled by
hit/miss, while writes are labeled to indicate whether the write was
discarded.
This will give us visibility into,
- hit rate of cache reads
- ratio of reads to writes
- rate of discarded writes
**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/63259
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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fix apiserver crashed when priority classs already exists
**What this PR does / why we need it**:
when priority classs already exists , ignore error
**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#67367
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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add unit test for v1.configmap and remove replicate code
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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use NameIsDNSSubdomain validation from staging
**What this PR does / why we need it**:
> // TODO update all references to these functions to point to the apimachineryvalidation ones
**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 #67219
**Special notes for your reviewer**:
/cc seans3
@kubernetes/sig-apps-pr-reviews
@kubernetes/sig-api-machinery-pr-reviews
**Release note**:
```release-note
None
```
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fix load balancer IP change when updating service
**What this PR does / why we need it**:
To fix bug in azure load balancer. Change frontend IP Configuration while updating service without changing its internal annotation
**Which issue(s) this PR fixes** :
Fixes#66424
```release-note
NONE
```
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update patch to work with --local and avoid extra requests
--local wasn't being respected by the resourcebuilder and then the later refreshes were unnecessary and violated --local in some cases.
@kubernetes/sig-cli-maintainers
@juanvallejo
```release-note
kubectl patch now respects --local
```
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Allow passing timeout on TPU API operations via context
The caller will provide a context with timeout attached.
**Release note**:
```release-note
None
```
/assign @vishh
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dockershim/network: pass ipRange CNI capabilities
**What this PR does / why we need it**:
Updates the dynamic (capability args) passed from Kubernetes to the CNI plugin. This means CNI plugin authors can offer more features and / or reduce their dependency on the APIServer.
Currently, we only pass the `portMappings` capability. CNI now supports `bandwidth` for bandwidth limiting and `ipRanges` for preferred IP blocks. This PR adds support for these two new capabilities.
Bandwidth limits are provided - as implemented in kubenet - via the pod annotations `kubernetes.io/ingress-bandwidth` and `kubernetes.io/egress-bandwidth`.
The ipRanges field simply passes the PodCIDR. This does mean that we need to change the NodeReady algorithm. Previously, we would only set NodeNotReady on missing PodCIDR when using Kubenet. Now, if the CNI configuration includes the `ipRanges` capability, we need to do the same.
**Which issue(s) this PR fixes**:
Fixes#64393
**Release note**:
```release-note
The dockershim now sets the "bandwidth" and "ipRanges" CNI capabilities (dynamic parameters). Plugin authors and administrators can now take advantage of this by updating their CNI configuration file. For more information, see the [CNI docs](https://github.com/containernetworking/cni/blob/master/CONVENTIONS.md#dynamic-plugin-specific-fields-capabilities--runtime-configuration)
```
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Other components support set log level dynamically
**What this PR does / why we need it**:
#63777 introduced a way to set glog.logging.verbosity dynamically.
We should enable this for all other components, which is specially useful in debugging.
**Release note**:
```release-note
Expose `/debug/flags/v` to allow kubelet dynamically set glog logging level. If want to change glog level to 3, you only have to send a PUT request like `curl -X PUT http://127.0.0.1:8080/debug/flags/v -d "3"`.
```
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Delete dead code in pkg/scheduler
**What this PR does / why we need it**:
This is just some cleanup. I found some unused code while evaluating the scheduler code.
**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
```
/kind cleanup
/sig scheduling
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Avoid unnecessary DaemonSet collisionCount bump
**What this PR does / why we need it**: Sometimes DaemonSet controller will bump its collisionCount more than necessary when the collisionCount of the DaemonSet in the cache store hasn't been updated. This won't affect users, as collisionCount is only used for creating unique hash and the number doesn't matter as long as it changes. This fix avoids the unnecessary collisionCount updates and de-flakes the DaemonSet test for collisionCount.
**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#67273
**Special notes for your reviewer**: @kubernetes/sig-apps-pr-reviews
**Release note**:
```release-note
NONE
```
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fix an issue in NodeInfo.Clone()
- usedPorts is a map-in-map struct, add fix to ensure it's deep copied
- updated unit test
**What this PR does / why we need it**:
Due to PR "Refactor HostIP predicate algorithm #55910", internal `usedPorts` data structure was changed from "map[string]bool" to "map[string]map[ProtocolPort]struct{}".
However, it breaks behavior of `NodeInfo.Clone()`: in the before, one loop `for k, v := range usedPorts` worked fine because it's a safe assignment, but it's not safe any more for a map-in-map using original code. A similar go playground sample is here: https://play.golang.org/p/puqMN71cmSO.
**Which issue(s) this PR fixes**:
Fixes#67453 (_Might_ also related with #66568)
**Special notes for your reviewer**:
- No matter pod preemption is enabled or disabled, #67453 can be triggered.
- As #55910 was introduced in 1.10, this fix needs to back ported to 1.10 and 1.11 release branches.
**Release note**:
```release-note
Fix an issue that pods using hostNetwork keep increasing.
```
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error text refers to wrong stream type
**What this PR does / why we need it**:
clarify error text
**Special notes for your reviewer**:
I think this was a copy and paste error.
**Release note**:
```release-note
NONE
```
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Compared preemption by priority in Kubelet
Signed-off-by: Da K. Ma <klaus1982.cn@gmail.com>
**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#65372
**Release note**:
```release-note
None
```
This adds counters to equiv. cache reads & writes. Reads are labeled by
hit/miss, while writes are labeled to indicate whether the write was
discarded.
This will give us visibility into,
- hit rate of cache reads
- ratio of reads to writes
- rate of discarded writes
Automatic merge from submit-queue (batch tested with PRs 62441, 66702, 67254, 67421, 65309). 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 backoff for DS's pod deletion to limit fighting with kubelet failing the pod repeatedly
**What this PR does / why we need it**:
Limits consequences of DS controller on hot loop fighting with kubelet.
**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/65240
**Release note**:
```release-note
DaemonSet controller is now using backoff algorithm to avoid hot loops fighting with kubelet on pod recreation when a particular DaemonSet is misconfigured.
```
TODO:
- [x] Export the backoff settings as args or constants
- [x] Add test a case
/cc @mfojtik
(Will add more folks when it's ready, to avoid spamming them.)
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use glog.V().Infof() for formatting output; return nil when err's nil
**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 #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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document expectations for stopped/shutdown instances in cloudprovider.Instances interface
**What this PR does / why we need it**:
Add comments which outline expectations for how cloud providers should handle nodes that are stopped/shutdown/sleeping.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
It doesn't fix https://github.com/kubernetes/kubernetes/issues/46442 since some providers still delete node resources for stopped instances (though there are PRs already open to fix this) but we've (mostly?) agreed that not deleting node resources for stopped instances is the correct behavior, or at least the behavior that we want consistent across providers at the moment.
**Special notes for your reviewer**:
```release-note
NONE
```
/sig cloud-provider
