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GCE: support Cloud TPU API in cloud provider
**What this PR does / why we need it**:
This PR adds the support for Cloud TPU API in GCE cloud provider.
**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
GCE: support Cloud TPU API in cloud provider
```
/assign @vishh
/assign @cheftako
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Add FailedPostStartHook error message.
**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)*: fixes#54671
**Special notes for your reviewer**:
/cc @derekwaynecarr
cc @lovejoy @OJezu
**Release note**:
```release-note
NONE
```
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Update gke nvidia-gpu-device-plugin to the latest version that supports
both v1alpha and v1beta1 device plugin versions.
Re-enables nvidia-gpus e2e test after verifying the test passes now.
**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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don't (remote) cache release-tars
**What this PR does / why we need it**: Disables Bazel *remote* caching for release tarballs. These are large, low hit rate build outputs. Before we enable remote caching for *builds* we should tag these type of outputs. `pull-kubernetes-bazel-test` already has this enabled and dropped in execution time by 70-80%
**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**: See https://github.com/kubernetes/test-infra/issues/6808 for details on the remote caching. This should not affect local builds. See the following for docs on this change: https://docs.bazel.build/versions/master/remote-caching.html#exclude-specific-targets-from-using-the-remote-cache
**Release note**:
```release-note
NONE
```
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util/goroutinemap code cleanup
**What this PR does / why we need it**:
/kind cleanup
code cleanup
**Release note**:
```release-note
NONE
```
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backoff runtime errors in kubelet sync loop
The runtime health check can race with PLEG's first relist, and this
often results in an unnecessary 5 second wait during Kubelet bootstrap.
This change aims to improve the performance.
```release-note
NONE
```
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Feature gate for regional PDs
**What this PR does / why we need it**: Adding beta feature gate around regional PD support.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*: Partially addresses #59988
**Special notes for your reviewer**: This feature has already been in alpha for two releases, but at the time it was not gated with a Kubernetes feature gate. Instead it was controlled by a GCE-specific alpha gate. However, there are additional changes with GCE PD StorageClass parameters that we'd like to gate as well, and this is out of scope of GCE alpha gates.
/cc @saad-ali @lavalamp
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Update kubectl describe to print out PV node affinity
**What this PR does / why we need it**:
Print out PV NodeAffinity in kubectl describe.
Sample output:
```
Name: example-local-pv
Labels: foo1=bar1
foo2=bar2
Annotations: <none>
Finalizers: []
StorageClass: local-storage
Status: Available
Claim:
Reclaim Policy: Delete
Access Modes: RWO
Capacity: 5Gi
Node Affinity:
Required Terms:
Term 0: kubernetes.io/hostname in [my-node]
foo1 in [bar1, bar2]
Term 1: foo2 exists
Message:
Source:
Type: LocalVolume (a persistent volume backed by local storage on a node)
Path: /mnt/disks/ssd1
Events: <none>
```
No NodeAffinity is set:
```
Name: nfs
Labels: <none>
Annotations: <none>
Finalizers: []
StorageClass:
Status: Available
Claim:
Reclaim Policy: Retain
Access Modes: RWX
Capacity: 1Mi
Node Affinity: <none>
Message:
Source:
Type: NFS (an NFS mount that lasts the lifetime of a pod)
Server: 10.244.1.4
Path: /exports
ReadOnly: false
Events: <none>
```
**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#60119
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Use feature-gates command line for kube-proxy
**What this PR does / why we need it**:
Avoid throwing `featureGates:` into the kube-proxy yaml, since it's
not in the right format. It should be
```
featureGates:
AllAlpha: true
```
Since FEATURES_GATES is set to `AllAlpha=true`, we can't just throw that
into the yaml file. Just pass along FEATURES_GATES in the command line
instead just like we do for all other services
**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#60426
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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auth: allow nodes to create tokens for svcaccts of pods
ref https://github.com/kubernetes/kubernetes/issues/58790
running on them. nodes essentially have the power to do this today
but not explicitly. this allows agents using the node identity to
take actions on behalf of local pods.
@kubernetes/sig-auth-pr-reviews @smarterclayton
```release-note
The node authorizer now allows nodes to request service account tokens for the service accounts of pods running on them.
```
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Remove dep-reviewers
**What this PR does / why we need it**:
The dep-reviewers group seems to get assigned PRs early the the review process. However, most code changes should be reviewed in the importing part of the code base first, and then assigned to an approver after.
By removing the reviewers group, the approvers plugin will still suggest assigning to an approver, but won't assign for review when the PR is initially opened.
**Release note**:
```release-note
NONE
```
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Fix StatefulSet set-based selector bug
**What this PR does / why we need it**:
ControllerRevisions were using selectors as the labels, in case of set-based selectors, the helper function to convert selectors to labels would break. This PR uses pod labels for ControllerRevision labels instead of selectors.
**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#59266
**Special notes for your reviewer**:
I'm trying to learn Kubernetes codebase and would be happy to make changes if anything is off.
**Release note**:
```release-note
Fix StatefulSet to work with set-based selectors.
```
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Add Garbage Collector e2e conformance tests
**What this PR does / why we need it**:
The garbage collector is a core component of kubernetes and needs to be tested by conformance, so its functionality can be relied on in any kubernetes environment.
As we can see in [testgrid](https://k8s-testgrid.appspot.com/sig-api-machinery#gce), the garbage collector tests being promoted by this PR are consistently passing. And the intention to promote them to conformance tests was laid out by [this document](https://docs.google.com/document/d/1h2S9ff9N-4MKqfayE3A8TqjD_qIwuND_dAhOAJFxYS0)
**Special notes for your reviewer**:
The last two tests in this file are not added as conformance tests because they involve beta features (custom resources and cronjobs), and conformance tests are only allowed for features in GA.
**Release note**:
```release-note
New conformance tests added for the Garbage Collector
```
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Make nodeport ip configurable
**What this PR does / why we need it**:
By default, kube-proxy accepts everything from NodePort without any filter. It can be a problem for nodes which has both public and private NICs, and people only want to provide a service in private network and avoid exposing any internal service on the public IPs.
This PR makes nodeport ip configurable.
**Which issue(s) this PR fixes**:
Closes: #21070
**Special notes for your reviewer**:
Design proposal see: https://github.com/kubernetes/community/pull/1547
Issue in feature repo: https://github.com/kubernetes/features/issues/539
**Release note**:
```release-note
Make NodePort IP addresses configurable
```
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CSI MountDevice/UnmountDevice Implementation
Fixes#60114
**What this PR does / why we need it**:
This PR Implements MountDevice and UnmountDevice for the CSI Plugin, the functions will call through to NodeStageVolume/NodeUnstageVolume for CSI plugins.
/sig storage
```release-note
Implements MountDevice and UnmountDevice for the CSI Plugin, the functions will call through to NodeStageVolume/NodeUnstageVolume for CSI plugins.
```
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don't use storage cache during apiserver unit test
General apiserver unit tests don't need to test the caching storage. It also leaks a bunch a goroutines which does bad things with race detection on and caused timeouts when upgrading etcd.
@kubernetes/sig-api-machinery-bugs
@sttts you can try pulling this in.
@liggitt doesn't affect "normal" runtime, which is why we only see it during tests. See relax.
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kubelet: fix bug where character device is not recognized
**What this PR does / why we need it**:
Fixes a bug where character devices are not recognized by the kubelet because we return `FileTypeBlockDev` instead of `FileTypeCharDev`.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Related issue: https://github.com/kubernetes/kubernetes/issues/5607
**Special notes for your reviewer**:
Kubelet event for bug: https://github.com/kubernetes/kubernetes/issues/5607#issuecomment-366366340
```
Warning FailedMount MountVolume.SetUp failed for volume "dev-fuse" : hostPath type check failed: /dev/fuse is not a character device
```
Commit where bug was introduced: 57ead4898b
**Release note**:
```release-note
Fixes a bug where character devices are not recongized by the kubelet
```
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[fluentd-gcp addon] Update to use Stackdriver Agent image.
Update the fluentd DaemonSet to use the Stackdriver Logging Agent container image.
The Stackdriver Logging Agent container image uses fluentd v0.14.25.
We add a special label to each log record as a signal to logging backends to handle both new and legacy resource types.
**Release note:**
```release-note
[fluentd-gcp addon] Switch to the image, provided by Stackdriver.
```
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[e2e ingress-gce] Enhance cleanup logic for pre-shared-cert test
**What this PR does / why we need it**:
Pre-shared-cert test are flaky (https://k8s-testgrid.appspot.com/sig-network-gce#ingress-gce-e2e&width=5), mostly due to the orphaned ssl cert.
This PR enhances the cleanup logic to continue deleting the orphaned cert for this case (without this test will panic on TryDeleteIngress if no ingress is created).
**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**:
/assign @rramkumar1
**Release note**:
```release-note
NONE
```
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Move kubelet flag generation from the node to the client
Pass the kubelet flags through a new variable in kube-env (KUBELET_ARGS).
Remove vars from kube-env that were only used for kubelet flags.
This will make it simpler to gradually migrate to dynamic kubelet
config, because we can gradually replace flags with config file
options in a single place without worrying about the plumbing to
move variables from the client onto the node.
/cc @verult (re: https://github.com/kubernetes/kubernetes/pull/58171)
**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
action required: [GCP kube-up.sh] Some variables that were part of kube-env are no longer being set (ones only used for kubelet flags) and are being replaced by a more portable mechanism (kubelet configuration file). The individual variables in the kube-env metadata entry were never meant to be a stable interface and this release note only applies if you are depending on them.
```
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Reduce number of pods created for local PV stress test
**What this PR does / why we need it**:
Local PV stress test is flaking. Failed runs show that test is timing out at 47/50 pods. Reduce the number of pods created by the test so that it's not so close to the max timeout.
**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**:
I'll need to investigate further to see why processing the pods is so slow and ways to speed it up. But for now, try to reduce flaking.
**Release note**:
```release-note
NONE
```
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Fix potential issues and bugs in hack/lib/*.sh scripts using shellcheck
**What this PR does / why we need it**:
This PR is continuing the work for cleaning up the shell scripts using shellcheck and manual inspection. The plan is to make the scripts more robust in case for unexpected input and also to fix potential bugs.
**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**:
The changes are for scripts in `hack/lib/` directory, and as library scripts are used from multiple places. It is not trivial to see all possible places from where the scripts are accessed, so careful review is needed. I tried to make sure that the changes would be compatible for older bash versions too.
**Release note**:
```release-note
NONE
```
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Add support for external metrics in kubectl
**What this PR does / why we need it**:
Add support for metrics coming from external sources when describing or printing horizontal pod autoscaler objects. API change: #60096
@MaciekPytel @DirectXMan12
**Release note**:
```
NONE
```
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refactor volume util files
**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/44460
**Special notes for your reviewer**:
/assign @jsafrane @msau42
**Release note**:
```release-note
NONE
```
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Enable protection tests
**What this PR does / why we need it**:
- StorageObjectInUseProtection feature is enabled by default so the test can run in regular e2e test suite
- Rename PVC protection test, it tests only PVCs and not whole storage.
**Release note**:
```release-note
NONE
```
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Conformance: Add StatefulSet tests.
Mark StatefulSet tests as Conformance where possible. I've excluded those that depend on a dynamic provisioner and a default storage class (i.e. those that use PVC), because I don't think those things are required for Conformance at this time.
@kow3ns @jagosan Please correct me if I'm wrong.
Part of #54256
```release-note
StatefulSet in apps/v1 is now included in Conformance Tests.
```
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Support rbd-nbd for mounting operations on Ceph rbd volumes
**What this PR does / why we need it**:
This PR improves Ceph RBD support by allowing the pkg/volume/rbd to use the rbd-nbd client. This client is based on the common and broadly adopted (librados) librbd library, and it is being actively developed and maintained as part of the ceph upstream code base, unlike krbd.
**Which issue(s) this PR fixes**:
Fixes https://github.com/kubernetes/kubernetes/issues/32266
**Special notes for your reviewer**:
rbd-nbd will be used for Ceph rbd volumes if rbd fails.
Some inspiration was pulled from these PRs #38936 & #55866.
**Test Description**: Tested against a k8s cluster with centos/7 as the host os. rbd-nbd installed from package rbd-nbd-10.2.3.rpm.
Tested:
1. Fall-through to current rbd map/unmap when no rbd-nbd tools are found.
2. Map/Unmap through rbd-nbd.
3. Detecting image already mapped to a nbd device and skipping additional mapping.
4. Detecting image already mapped to a rbd device and skipping additional mapping through nbd.
5. Unmap in hosts having mixed rbd and nbd devices (caused by fall-throughs for some images).
6. Map failure in rbd-nbd due to missing image.
7. Map failure in rbd-nbd due to unreachable mon.
8. Fall-through to current rbd map when rbd-nbd map fails for any reason.
**Release note**:
```release-note
K8s supports rbd-nbd for Ceph rbd volume mounts.
```
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kubeadm token create using config file
**What this PR does / why we need it**:
Extends `kubeadm token create` adding `--config` flag. Using a config file keeps the token off of bash history.
**Which issue(s) this PR fixes**:
Fixes [#461](https://github.com/kubernetes/kubeadm/issues/461)
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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code-gen: output golint compliant 'Generated by' comment
New PR instead of reopening #58115 because /reopen did not work.
This won't be ready to merge until the upstream https://github.com/kubernetes/gengo/pull/94 merges. Once that merges, the second commit will be changed to godep-save.sh and update-staging-godeps.sh, and the last commit will be changed to update-all.sh
The failing test is due to the upstream changes not being merged yet
```devel-release-note
Go code generated by the code generators will now have a comment which allows them to be easily identified by golint
```
Fixes#56489
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fix some syntax related errors
**What this PR does / why we need it**:
fix some syntax related errors
**Special notes for your reviewer**:
None
```release-note
NONE
```
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Avoid explicit mention of glusterfs in error strings.
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
**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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update aws plugin for block support
Update aws plugin to support block and volumeMode.
cc @jsafrane @mtanino @msau42
```release-note
AWS EBS volume plugin got block volume support
```
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kubectl: flag value bindings for common utils
**What this PR does / why we need it**:
/kind cleanup
/sig cli
xxxOptions did not get bound as default value for some flags.
This PR cleans those flag bindings in common utils library.
**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 #60366
**Special notes for your reviewer**:
/assign @deads2k
**Release note**:
```release-note
None
```
Mike Danese