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kyverno/documentation/kyverno-cli.md
Pooja Singh 7195b20e90
Feature/print mutated policy (#1014)
* added printing mutation policy

* added mutated method in common

* improved yaml print

* updated readme

* small fix

* small fix
2020-07-29 09:11:58 -07:00

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<small>*[documentation](/README.md#documentation) / kyverno-cli*</small>
# Kyverno CLI
The Kyverno Command Line Interface (CLI) is designed to validate policies and test the behavior of applying policies to resources before adding the policy to a cluster. It can be used as a kubectl plugin and as a standalone CLI.
## Build the CLI
You can build the CLI binary locally, then move the binary into a directory in your PATH.
```bash
git clone https://github.com/nirmata/kyverno.git
cd github.com/nirmata/kyverno
make cli
mv ./cmd/cli/kubectl-kyverno/kyverno /usr/local/bin/kyverno
```
You can also use [Krew](https://github.com/kubernetes-sigs/krew)
```bash
# Install kyverno using krew plugin manager
kubectl krew install kyverno
#example
kubectl kyverno version
```
## Install via AUR (archlinux)
You can install the kyverno cli via your favourite AUR helper (e.g. [yay](https://github.com/Jguer/yay))
```
yay -S kyverno-git
```
## Commands
#### Version
Prints the version of kyverno used by the CLI.
Example:
```
kyverno version
```
#### Validate
Validates a policy, can validate multiple policy resource description files or even an entire folder containing policy resource description
files. Currently supports files with resource description in yaml.
Example:
```
kyverno validate /path/to/policy1.yaml /path/to/policy2.yaml /path/to/folderFullOfPolicies
```
Use the -o <yaml/json> flag to display the mutated policy.
Example:
```
kyverno validate /path/to/policy1.yaml /path/to/policy2.yaml /path/to/folderFullOfPolicies -o yaml
```
#### Apply
Applies policies on resources, and supports applying multiple policies on multiple resources in a single command.
Also supports applying the given policies to an entire cluster. The current kubectl context will be used to access the cluster.
Displays mutate results to stdout, by default. Use the -o <path> flag to save mutated resources to a file or directory.
Apply to a resource:
```
kyverno apply /path/to/policy.yaml --resource /path/to/resource.yaml
```
Apply to all matching resources in a cluster:
```
kyverno apply /path/to/policy.yaml --cluster > policy-results.txt
```
Apply multiple policies to multiple resources:
```
kyverno apply /path/to/policy1.yaml /path/to/folderFullOfPolicies --resource /path/to/resource1.yaml --resource /path/to/resource2.yaml --cluster
```
Saving the mutated resource in a file/directory:
```
kyverno apply /path/to/policy.yaml --resource /path/to/resource.yaml -o <file path/directory path>
```
<small>*Read Next >> [Sample Policies](/samples/README.md)*</small>