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Fixed e2e gke test "scale up correct target pool".

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Fixed e2e gke test "scale up correct target pool" by adding creation of
cluster autoscaler for the new pool.

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Change default value of deleting-pods-burst to 1

Fix. #27413

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Kubelet Volume Attach/Detach/Mount/Unmount Redesign

This PR redesigns the Volume Attach/Detach/Mount/Unmount in Kubelet as proposed in https://github.com/kubernetes/kubernetes/issues/21931

```release-note
A new volume manager was introduced in kubelet that synchronizes volume mount/unmount (and attach/detach, if attach/detach controller is not enabled).

This eliminates the race conditions between the pod creation loop and the orphaned volumes loops. It also removes the unmount/detach from the `syncPod()` path so volume clean up never blocks the `syncPod` loop.
```

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Update default value of CLAIM_BINDER_SYNC_PERIOD.

It's 15 seconds now, see #26414 and #24236.

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federation: choosing a default federation name in test instead of failing

The tests are failing right now:
http://kubekins.dls.corp.google.com/job/kubernetes-e2e-gce-federation/

```
[k8s.io] Service [Feature:Federation] should be able to discover a non-local federated service

/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/federated-service.go:130 Jun 14 12:40:35.091: FEDERATION_NAME environment variable must be set


[k8s.io] Service [Feature:Federation] should be able to discover a federated service

/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/federated-service.go:130 Jun 14 12:40:40.802: FEDERATION_NAME environment variable must be set
```

This is to fix them.

cc @kubernetes/sig-cluster-federation @mml 

Fixes https://github.com/kubernetes/kubernetes/pull/27410

This commit adds a new volume manager in kubelet that synchronizes
volume mount/unmount (and attach/detach, if attach/detach controller
is not enabled).

This eliminates the race conditions between the pod creation loop
and the orphaned volumes loops. It also removes the unmount/detach
from the `syncPod()` path so volume clean up never blocks the
`syncPod` loop.

Rename UniqueDeviceName to UniqueVolumeName and move helper functions
from attacherdetacher to volumehelper package.
Introduce UniquePodName alias

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Fix failures in up and down services in large clusters

Ref #26687

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Make timeout for starting system pods configurable

Context: in 2000-node clusters (if only one node is big enough to fit heapster, which is our testing configuration), heapster won't be scheduled until that node has route. However, creating routes is pretty expensive and currently can take even 2 hours.

@zmerlynn @gmarek 

Fixed e2e gke test "scale up correct target pool" by adding creation of
cluster autoscaler for the new pool.

Revert "Downward api node defaults"

It's 15 seconds now, see #26414.

Changed constans to reduce hpa e2e test flakiness.

Turn off mitlinode pool test in GKE until it is fixed

Changed constans to reduce hpa e2e test flakiness.

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Add Google Cloud DNS auth scope to GCE VMs when they are started in a federation.

cc @colhom @kubernetes/sig-cluster-federation 

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Downward api node defaults

Fixes #27062

Replaces https://github.com/kubernetes/kubernetes/pull/27107

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Update PVC.Selector docs: it's ignored when VolumeName is set

@kubernetes/sig-storage 

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GKE provider: Add a HEAPSTER_MACHINE_TYPE option

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Allows heterogeneous cluster configurations for large cluster
synthetic testing.

Supersedes #27389 

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Fix a debugging line

A trivial update. @k8s-oncall can we manually merge it?

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Add image pulling node e2e

Fixes #27007.
Based on #27309, will rebase after #27309 gets merged.

This PR added all tests mentioned in #27007:
* Pull an image from invalid registry;
* Pull an invalid image from gcr;
* Pull an image from gcr;
* Pull an image from docker hub;
* Pull an image needs auth with/without secrets.

For the imagePullSecrets test, I created a new gcloud project "authenticated-image-pulling", and the service account in the code only has "Storage Object Viewer" permission.

/cc @pwittrock @vishh 

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Allows heterogeneous cluster configurations for large cluster
synthetic testing.

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Add description to created node images

Make it a little easier to see who to contact about important node e2e images.

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Add kubectl version guard around kubectl port-forward

Fixes #26594 (once this gets backported to v1.2 and v1.3).

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petset and volume debug messages

To help with https://github.com/kubernetes/kubernetes/issues/27299 https://github.com/kubernetes/kubernetes/issues/27058

simple enough that either reviewer can approve I guess.

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Fix race in informer

Fix #27004

@smarterclayton @hongchaodeng @caesarxuchao 

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Added e2e test for cluster autoslaer for gke with multiple node-pools.

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Added e2e test for cluster autoslaer for gke with multiple node-pools.

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GCE provider: Fix minor cosmetic logging issue

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Log the pollOp, not the base op. (This will include the final status/timestamp and any errors.)

Fix v1.4.0-alpha.0 tag

This reverts commit c7f1485e, reversing
changes made to 939ad411.