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client-go/tools/cache: fix possible deadlock when stopping a reflector
While getting Connection-Refused error, a reflector was retrying without stopping when the stopCh is closed.
The flaking TestCRD #54095 sometimes shows a deadlock in reflectors that should be shutdown, called from the storage cacher. So possibly this is related.
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use versiond group clients from client-go
**What this PR does / why we need it**:
Some **Deprecated** group clients are still used, replace them with versioned group clients.
**Which issue this PR fixes**: fixes#49760
**Special notes for your reviewer**:
/assign @caesarxuchao
**Release note**:
```release-note
NONE
```
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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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Fix GKE failure, set default in configure.sh.
Fixes#55189.
Signed-off-by: Lantao Liu <lantaol@google.com>
**Release note**:
```release-note
none
```
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Add integration test for deployment rolling update, rollback, rollover
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: ref #52113
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Fix divide by zero issue in calculating spread priority for zones
```release-note
NONE
```
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Add CoreDNS as feature in kubeadm
**What this PR does / why we need it**:
This PR adds CoreDNS as a DNS plugin via the feature-gate option in Kubeadm init.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*:
Fixeskubernetes/features#427
**Special notes for your reviewer**:
**Release note**:
```release-note
kubeadm: Add an experimental mode to deploy CoreDNS instead of KubeDNS
```
/cc @johnbelamaric
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Replace some occurances of kubernetes internal api types in kubectl
**What this PR does / why we need it**:
Removes dependency on k8s.io/kubernetes/pkg/apis/extensions from kubectl
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
part of https://github.com/kubernetes/kubectl/issues/83
fixes: https://github.com/kubernetes/kubectl/issues/92
**Special notes for your reviewer**:
**Release note**:
```NONE
```
KubeletVersionCheck now able to detect if kubelet version
is higher than control plane. As this might lead to malfunctional
cluster setups, kubeadm will give warning.
Fixes: kubernetes/kubeadm#496
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Allow HPA to get custom metrics
**What this PR does / why we need it**:
This PR allows HPA to read custom metrics.
**Release note**:
```release-note
Allow HPA to read custom metrics.
```
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Node which is not present not need update NodeAddress
**What this PR does / why we need it**:
when the node is not exist according to cloud provider. there is no need to update node address better.
finally the node will be delete in https://github.com/kubernetes/kubernetes/blob/master/pkg/controller/cloud/node_controller.go#L240
**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
```
- Reducing the duplicated reduce function by introducing a reduce
function generator that generates common reduce functions.
- Remove logs from reduce function, so it's purely calculating scores.
- Optimize the reduce functions by removing unnecessary conversion to
float64.
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Fix 'Schedulercache is corrupted' error
Fixes#50916
If an Assume()ed pod is Add()ed with a different nodeName, the podStates view of the pod is not corrected to reflect the actual nodeName. On the next Update(), the scheduler observes the mismatch and process exits.
```release-note
Fixed 'Schedulercache is corrupted' error in kube-scheduler
```
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When cert dir is relative, cert rotation builds incorrect symlinks
Symlinks relative to a working directory were being constructed to the
wrong location, leading to failure to refresh client certs.
@liggitt
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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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Tolerate partial discovery in garbage collector
Allow the garbage collector to tolerate partial discovery failures. On a
partial failure, use whatever was discovered, log the failures, and
allow the resync logic to try again later.
Fixes#55022.
```release-note
API discovery failures no longer crash the kube controller manager via the garbage collector.
```
/cc @caesarxuchao
