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Modify predicate() interface to return all failed predicates

As stated in the comments below, this is the first step of showing the user all predicates that failed for a given node when scheduling of a given pod failed on every node.
ref #20064

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Remove default etcd validation in generic apiserver

Moving verification of `--etcd-servers` to the concrete apiserver instead of checking during defaulting in generic apiserver.

The context for this change is that heapster (will be another apiserver) doesn't need to have etcd underneath.

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Set cache size in Kubemark

Fix #27142

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make reousrce prefix assignment consistent

Make reousrce prefix assignment consistent with other registries

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Configure cache sizes based on cluster size

@fabioy

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Validate .. in projections, fix tests

I noticed this when reviewing another PR.  I fixed it but the test was beyond comprehension, so I fixed that too.

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Kubelet: Add container ports label.

Addresses https://github.com/kubernetes/kubernetes/pull/30049#discussion_r73983952.

Add container ports label, although we don't use it now, it will make it easier to switch to new runtime interface in the future.

@yujuhong @feiskyer 

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csr: add approval to the typed client

ref #30163

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In AddOrUpdateTaintOnNode create annotation map if its nil

If node didn't have annotations both SchedulerPredicates taints-toleration tests were failing.

@gmarek PTAL

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Kubelet: implement labels for new runtime API

Implement labels for new runtime API. Part of #28789 . 


CC @yujuhong @Random-Liu @kubernetes/sig-node

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E2E & Node E2E: Move pods test into common directory

This is the 4th part of #29494.

For #29081.
Based on #29092, #29806.

The first commit is squash of all dependent commits. Please only review the last 2 commits.

The 2nd commit migrates pods.go to `common/pods.go`.
Notice that the test `should be schedule with cpu and memory limits` is removed because:
* It doesn't make sense at the node level.
* It should have been tested in scheduler_predicates at the cluster level https://github.com/kubernetes/kubernetes/blob/master/test/e2e/scheduler_predicates.go#L264

The 3rd commit splits pods.go into several pods (nothing is changed, only move code):
* **Liveness probe test:** Moved into `container_probe.go`.
* **Init container test:** Moved into a new file `init_container.go`.
* **Others:** Still in pods.go

@vishh @timstclair

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[GarbageCollector] only store typeMeta and objectMeta in the gc store

GC only needs to know the apiVersion, kind, and objectMeta of an object. This PR makes the stores of GC only save these fields.
cc @kubernetes/sig-api-machinery

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Deployment status validity should be checked in scaled rollout e2e test

Follow up #29889 

@kubernetes/deployment

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Update scale cmd help to display duration "units" in --timeout usage

release-note-none

`kubectl scale` has `--timeout` option, but the help info does not give accepted time units.

The help info gives default value 0 without a unit, potentially misleading a user into thinking they need to pass the numbered time only.

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Add service and deployment create sub-commands to kubectl

```release-note
Added new commands kubectl create service & kubectl create deployment
```
Partial #25382

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Add update_job_result_cache() to uploader for storing last 200 results in a single file.

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Add SET_NOMOCK_FLAG handling.

Pass thru KUBE_GCS_RELEASE_BUCKET (for federation yamls that change it).

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Allow expressing inodes in percentages for eviction

Per discussion here:
https://github.com/kubernetes/kubernetes/pull/28055#issuecomment-230078770

The amount of inodes per disk can vary, and our operators would prefer to express eviction in terms of percentage available.  So independent of a disk having 3.2M or 12M of total inodes, its more convenient to just express eviction as saying if available inodes falls below 10 or 5 percent of total capacity then trigger an action.

/cc @vishh @ronnielai @kubernetes/rh-cluster-infra @twiest @kubernetes/sig-node 

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Add integration test for volume controller startup.

Tests #28002 with real etcd (unit tests have a fake one with different behavior).

@kubernetes/sig-storage 

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Add total inodes to kubelet summary api

Needed to support inode based eviction thresholds as a percentage.

/cc @ronnielai @vishh @kubernetes/rh-cluster-infra 

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Return nil directly when err is nil.

When err is nil, return nil directly instead of `err` to avoid confusion.

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Repalce rawContainerID with containerID

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Edits to bring the tls-terminated etcd cluster to the layer.

fixes #23198
```release-note
* Updates required for juju kubernetes to use the tls-terminated etcd charm.
```

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Federation common libs - deliverAfer for delaying deliverer

cc: @wojtek-t @kubernetes/sig-cluster-federation 

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Admission control errors should have consistent lower casing

noticed while reviewing other PRs, but convention is that error messages should start with lower-case.

fixed up inconsistencies in admission control plug-ins.

/cc @ncdc