Node Feature Discovery

# Kubectl plugin

## Table of contents

> Developer Preview This feature is currently in developer preview and subject to change. It is not recommended to use it in production environments.

## Overview

The `kubectl` plugin `kubectl nfd` can be used to validate/dryrun and test NodeFeatureRule objects. It can be installed with the following command:

    git clone https://github.com/kubernetes-sigs/node-feature-discovery
    cd node-feature-discovery
    make build-kubectl-nfd
    KUBECTL_PATH=/usr/local/bin/
    mv ./bin/kubectl-nfd ${KUBECTL_PATH}

### Validate

The plugin can be used to validate a NodeFeatureRule object:

    kubectl nfd validate -f <nodefeaturerule.yaml>

### Test

The plugin can be used to test a NodeFeatureRule object against a node:

    kubectl nfd test -f <nodefeaturerule.yaml> -n <node-name>

### DryRun

The plugin can be used to DryRun a NodeFeatureRule object against a NodeFeature file:

    kubectl get -n node-feature-discovery nodefeature <nodename> -o yaml > <nodefeature.yaml>
    kubectl nfd dryrun -f <nodefeaturerule.yaml> -n <nodefeature.yaml>

Or you can use the example NodeFeature file(it is a minimal NodeFeature file):

    $ kubectl nfd dryrun -f examples/nodefeaturerule.yaml -n examples/nodefeature.yaml
    Evaluating NodeFeatureRule "examples/nodefeaturerule.yaml" against NodeFeature "examples/nodefeature.yaml"
    Processing rule:  my sample rule
    *** Labels ***
    vendor.io/my-sample-feature=true
    NodeFeatureRule "examples/nodefeaturerule.yaml" is valid for NodeFeature "examples/nodefeature.yaml"

Node Feature Discovery
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This Software is under the terms of Apache License 2.0.