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Kubernetes Submit Queue 21387af0b4
Merge pull request #58990 from bsalamat/nominated_node 
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>.

Add NominatedNodeName field to PodStatus

**What this PR does / why we need it**:
Today, Scheduler uses an annotation called "nominated-node-name" to mark a preemptor Pod. This annotation helps scheduler know about the Pods that are destined to run on the nodes so that the resources made available by preemption is not allocated to a different Pod. In a recent discussion with @bgrant0607, we learned that we should change the annotation to a field as this field can be used by multiple schedulers and other components that may make scheduling-related decisions (descheduler, auto-scaler, kube-arbitrator, ...). 


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

ref #57471

**Special notes for your reviewer**:

**Release note**:

```release-note
Add "nominatedNodeName" field to PodStatus. This field is set when a pod preempts other pods on the node.
```
/sig scheduling
 		2018-02-02 07:26:16 -08:00
..
BUILD Enable auto-generating sources rules 2017-01-05 14:14:13 -08:00
README.md Typo 2017-12-05 13:14:06 -06:00
swagger.json Merge pull request #58990 from bsalamat/nominated_node 2018-02-02 07:26:16 -08:00

README.md

Kubernetes's OpenAPI Specification

This folder contains an [OpenAPI specification][openapi] for Kubernetes API.

Vendor Extensions

Kubernetes extends OpenAPI using these extensions. Note the version that extensions has been added.

x-kubernetes-group-version-kind

Operations and Definitions may have x-kubernetes-group-version-kind if they are associated with a kubernetes resource.

For example:

"paths": {
    ...
    "/api/v1/namespaces/{namespace}/pods/{name}": {
        ...
        "get": {
        ...
            "x-kubernetes-group-version-kind": {
            "group": "",
            "version": "v1",
            "kind": "Pod"
            }
        }
    }
}

x-kubernetes-action

Operations and Definitions may have x-kubernetes-action if they are associated with a kubernetes resource. Action can be one of get, list, put, patch, post, delete, deletecollection, watch, watchlist, proxy, or connect.

For example:

"paths": {
    ...
    "/api/v1/namespaces/{namespace}/pods/{name}": {
        ...
        "get": {
        ...
            "x-kubernetes-action": "list"
        }
    }
}

x-kubernetes-patch-strategy and x-kubernetes-patch-merge-key

Some of the definitions may have these extensions. For more information about PatchStrategy and PatchMergeKey see [strategic-merge-patch] (https://github.com/kubernetes/community/blob/master/contributors/devel/strategic-merge-patch.md).