---
api_metadata:
  apiVersion: ""
  import: "k8s.io/api/core/v1"
  kind: "NodeSelectorRequirement"
content_type: "api_reference"
description: "A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values."
title: "NodeSelectorRequirement"
weight: 4
auto_generated: true
---

[//]: # (The file is auto-generated from the Go source code of the component using a generic generator,)
[//]: # (which is forked from [reference-docs](https://github.com/kubernetes-sigs/reference-docs.)
[//]: # (To update the reference content, please follow the `reference-api.sh`.)

`import "k8s.io/api/core/v1"`

A node selector requirement is a selector that contains values, a key, and an operator that relates the key and values.

<hr/>

- **key** (string), required

  The label key that the selector applies to.

- **operator** (string), required

  Represents a key's relationship to a set of values. Valid operators are In, NotIn, Exists, DoesNotExist. Gt, and Lt.
  
  Possible enum values:
   - `"DoesNotExist"`
   - `"Exists"`
   - `"Gt"`
   - `"In"`
   - `"Lt"`
   - `"NotIn"`

- **values** ([]string)

  *Atomic: will be replaced during a merge*
  
  An array of string values. If the operator is In or NotIn, the values array must be non-empty. If the operator is Exists or DoesNotExist, the values array must be empty. If the operator is Gt or Lt, the values array must have a single element, which will be interpreted as an integer. This array is replaced during a strategic merge patch.