Automatic merge from submit-queue. 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>.

Added network-unavailable tolerations when hostNetwork=true.
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 #61050 

**Release note**:
```release-note
None
```

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Patch glbc manifest to use version 1.0.0. Also add rate limiting flags

Will also add a release note to the 1.10 google doc as well.

Fixes: #61305

/assign @bowei 
/cc @nicksardo 

Release Note:
```release-note
Bump ingress-gce image in glbc.manifest to 1.0.0
```

Signed-off-by: Da K. Ma <klaus1982.cn@gmail.com>

Automatic merge from submit-queue (batch tested with PRs 61351, 61294). 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>.

Fix cpu cfs quota flag with pod cgroups

**What this PR does / why we need it**:
It fixes the cpu-cfs-quota flag in the kubelet when pod cgroups are enabled.

**Which issue(s) this PR fixes** 
Fixes #61293

**Special notes for your reviewer**:
This is a regression reported by some of our users that disable cpu quota enforcement.

**Release note**:
```release-note
Fix regression where kubelet --cpu-cfs-quota flag did not work when --cgroups-per-qos was enabled
```

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Wait for only enough no. of RC replicas to be running in testutil

Fix https://github.com/kubernetes/kubernetes/issues/61189

/sig scalability
/kind bug
/priority important-soon
/cc @wojtek-t 

```release-note
NONE
```

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Fail the ingress test if it timesout getting address

Updating the test to fail if it timesout getting IP address for the ingress rather than silently ignoring that error.
Also improved some logging to print more information.

This is to help in debugging tests added in https://github.com/kubernetes/kubernetes/pull/59234

cc @madhusudancs @MrHohn @nicksardo 

Ref https://github.com/GoogleCloudPlatform/k8s-multicluster-ingress/issues/131

```release-note
NONE
```

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Fix a bug where malformed paths don't get written to the destination dir

Fixes https://github.com/kubernetes/kubernetes/issues/61297

@liggitt @hansmi @cjcullen @jessfraz

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Prevent garbage collector from attempting to sync with 0 resources

**What this PR does / why we need it**:
As of #55259 we enabled garbagecollector.GetDeletableResources to return partial discovery results (including an empty set of discovery results).
This had the unintended consequence of allowing the garbage collector to enter a blocked state that can only be fixed by restarting.

From [this comment](https://github.com/kubernetes/kubernetes/issues/60037#issuecomment-372801088):

> 1. The Sync function periodically calls GetDeletableResources
>
> 2. According to the comment above GetDeletableResources, All discovery errors are considered temporary. Upon encountering any error, GetDeletableResources will log and return any discovered resources it was able to process (which may be none)., an error in discovery causes the discovery client to no longer discover resources in the cluster, but instead of failing and returning an error, it simply logs the error as garbagecollector.go:601] failed to discover preferred resources: %vthe server was unable to return a response in the time allotted, but may still be processing the request and returns an empty list of resources
>
> 3. The Sync function, upon recieving an empty resource list from discovery, detects that the resources have changed, and calls resyncMonitors, which calls dependencyGraphBuilder.syncMonitors with map[] as the argument as shown in the log as garbagecollector.go:189] syncing garbage collector with updated resources from discovery: map[], which sets the list of monitors to an empty list because it thinks there are no resources to monitor.
>
> 4. Lastly the Sync function calls controller.WaitForCacheSync, which calls cache.WaitForCacheSync, which will continually retry the garbagecollector.IsSynced function until it returns true, but it will always return false because len(gb.monitors) is 0.

This PR prevents that specific race condition from arising.

**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 #60037

**Release note**:
```release-note
Fix bug allowing garbage collector to enter a broken state that could only be fixed by restarting the controller-manager.
```

Automatic merge from submit-queue (batch tested with PRs 61284, 61119, 61201). 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 AUTOSCALER_ENV_VARS to kube-env to hotfix cluster autoscaler

This provides a temporary way for the cluster autoscaler to get at
values that were removed from kube-env in #60020. Ideally this
information will eventually be available via e.g. the Cluster API,
because kube-env is an internal interface that carries no stability
guarantees.

This is the first half of the fix; the other half is that cluster autoscaler
needs to be modified to read from AUTOSCALER_ENV_VARS, if it is
available.

Since cluster autoscaler was also reading KUBELET_TEST_ARGS for the
kube-reserved flag, and we don't want to resurrect KUBELET_TEST_ARGS in kube-env,
we opted to create AUTOSCALER_ENV_VARS instead of just adding back
the old env vars. This also makes it clear that we have an ugly dependency
on kube-env.

```release-note
NONE
```

Automatic merge from submit-queue (batch tested with PRs 61284, 61119, 61201). 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>.

Fix creation of subpath with SUID/SGID directories.

SafeMakeDir() should apply SUID/SGID/sticky bits to the directory it creates.

Fixes #61283 

**Release note**:

```release-note
NONE
```

This provides a temporary way for the cluster autoscaler to get at
values that were removed from kube-env in #60020. Ideally this
information will eventually be available via e.g. the Cluster API,
because kube-env is an internal interface that carries no stability
guarantees.

Automatic merge from submit-queue. 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>.

Added unschedulable taint
Signed-off-by: Da K. Ma <klaus1982.cn@gmail.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)*:
part of #59194; fixes #61050

**Release note**:

```release-note
When `TaintNodesByCondition` enabled, added `node.kubernetes.io/unschedulable:NoSchedule`
 taint to the node if `spec.Unschedulable` is true.

When `ScheduleDaemonSetPods` enabled, `node.kubernetes.io/unschedulable:NoSchedule` 
toleration is added automatically to DaemonSet Pods; so the `unschedulable` field of 
a node is not respected by the DaemonSet controller.
```

SafeMakeDir() should apply SUID/SGID/sticky bits to the directory it creates.

Automatic merge from submit-queue (batch tested with PRs 60722, 61269). 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>.

Bump fluentd-gcp-scaler version

**What this PR does / why we need it**:
This version fixes a bug in which scaler was setting resources for all containers in the pod, not only fluentd-gcp one.

**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 #60763

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

Automatic merge from submit-queue. 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>.

Remove mapping to /host/lib from fluentd-gcp container.

**What this PR does / why we need it**:

This mapping is no longer needed since fluentd-gcp v2.0.16, in which it started using a container image based on Debian Stretch, in which the systemd libraries already include support for all the supported
compression algorithms.

The `/run.sh` in the image no longer accesses `/host/lib` anyways, so let's stop mapping it here.

Related changes:
- fluentd-gcp on GoogleCloudPlatform/k8s-stackdriver#101
- fluentd-es on GoogleCloudPlatform/google-fluentd#80

/assign @timstclair 
/cc @crassirostris @bmoyles0117 

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
N/A

**Special notes for your reviewer**:
N/A

**Release note**:

```release-note
NONE
```

Fixes #60763

This version fixes a bug in which scaler was setting resources for all containers in the pod, not only fluentd-gcp one.

Automatic merge from submit-queue. 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>.

Fixes 'Zone is empty' errors in PD upgrade tests; skips pd tests with inline volume in multizone clusters

**What this PR does / why we need it**: Fixes regional cluster upgrade test failures.

PV upgrade tests were failing because a "" zone is passed to the GCE PD create disk call. In a multizone setting the test must select from a managed zone.

PD tests were failing because it uses inline GCE PD volumes, which should not be used in multizone clusters.

**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 #61242 

/release-note-none
/assign @saad-ali 
/cc @wojtek-t 
/sig storage
/sig gcp

Automatic merge from submit-queue (batch tested with PRs 60978, 60985). 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>.

Backoff only when failed pod shows up

**What this PR does / why we need it**:
Upon introducing the backoff policy we started to delay sync runs for the job when it failed several times before. This leads to failed jobs not reporting status right away in cases that are not related to failed pods, eg. a successful run. This PR ensures the backoff is applied only when `updatePod` receives a failed pod.

**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 #59918 #59527

/assign @janetkuo @kow3ns 

**Release note**:
```release-note
None
```

Automatic merge from submit-queue (batch tested with PRs 60978, 60985). 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>.

Fix use of "-w" flag to iptables-restore

iptables accepts "-w5" but iptables-restore requires "-w 5", so kube-proxy is currently broken for people with an iptables-restore new enough that kube-proxy tries to use the new flags.

Fixes #58956

**Release note**:
```release-note
Fixed kube-proxy to work correctly with iptables 1.6.2 and later.
```

Signed-off-by: Da K. Ma <klaus1982.cn@gmail.com>

Automatic merge from submit-queue (batch tested with PRs 61203, 61071). 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>.

Fix issue with race condition during pod deletion

This PR fixes two issues
1. When desired_state_populator removes podvolume state, it should check
whether the actual state already has the volume before deleting it to
make sure actual state has a chance to add the volume into the state
2. When checking podVolume still exists, it not only checks the actual
state, but also the volume disk directory because actual state might not
reflect the real world when kubelet starts.

fixes issue #60645

Automatic merge from submit-queue (batch tested with PRs 61203, 61071). 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>.

Fix deprecated gcloud compute networks --mode switches.

"create --mode" becomes "create --subnet-mode", and switch-mode has been
folded into "update".

Create --mode was deprecated in October and will be removed in the next
gcloud release. It is already failing in staging tests.
**What this PR does / why we need it**:

**Which issue(s) this PR fixes** Fixes #54238

**Special notes for your reviewer**:

**Release note**:
```release-note
NONE
```

This PR fixes two issues
1. When desired_state_populator removes podvolume state, it should check
whether the actual state already has the volume before deleting it to
make sure actual state has a chance to add the volume into the state
2. When checking podVolume still exists, it not only checks the actual
state, but also the volume disk directory because actual state might not
reflect the real world when kubelet starts.

Automatic merge from submit-queue (batch tested with PRs 60888, 61225). 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>.

Bump fluentd-gcp-scaler version

**What this PR does / why we need it**:
This version verifies on its own whether resources should be updated or not, instead of relying on `kubectl set resources`.

**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 #61190


**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

cc @shyamjvs

Automatic merge from submit-queue (batch tested with PRs 60888, 61225). 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>.

Mark reconstructed volumes as reported InUse

When a newly started kubelet finds a directory where a volume should be,
it can be fairly confident that the volume was mounted by previous kubelet
and therefore the volume must have been in node.status.volumesInUse.

Therefore we can mark reconstructed volumes as already reported so
subsequent reconcile() can fix the directory and put the mounted volume
into actual state of world.

Fixes: #60645

**Release note**:

```release-note
NONE
```

/sig storage
/sig node
cc: @gnufied @jingxu97

Fixes 'Zone is empty' errors in PD upgrade tests; skips pd tests with inline volume in multizone clusters

Fixes #61190.

This version verifies on its own whether resources should be updated or not, instead of relying on `kubectl set resources`.

"create --mode" becomes "create --subnet-mode", and switch-mode has been
folded into "update".

Create --mode was deprecated in October and will be removed in the next
gcloud release. It is already failing in staging tests.