---
layout: docs
page_title: Vault Secrets Operator with HCP Vault Secrets
description: >-
  The Vault Secrets Operator allows Pods to consume HCP Vault Secrets natively from Kubernetes Secrets.
---

# HCP Vault Secrets source

## Overview

The Vault secrets operator (VSO) syncs your [HCP Vault Secrets app](/hcp/docs/vault-secrets) (HVSA) to
a Kubernetes Secret. Vault syncs each `HCPVaultSecretsApp` custom resource periodically to ensure that
changes to the secret source are properly reflected in the Kubernetes secret.


## Features

- Periodic synchronization of HCP Vault Secrets app to a *destination* Kubernetes Secret.
- Automatic drift detection and remediation when the destination Kubernetes Secret
  is modified or deleted.
- Supports all VSO features, including rollout-restarts on secret rotation or
  during drift remediation.
- Supports authentication to HCP using [HCP service principals](/hcp/docs/hcp/admin/iam/service-principals).


### Supported HCP authentication methods

| Backend                                                              | Description                                            |
|----------------------------------------------------------------------|--------------------------------------------------------|
| [HCP Service Principals](/hcp/docs/hcp/admin/iam/service-principals) | Relies on static credentials for authenticating to HCP |


### HCP Vault Secrets sync example

The following Kubernetes configuration can be used to sync the HCP Vault Secrets app, `vso-example`,
to the Kubernetes Secret, `vso-app-secret`, in the `vso-example-ns` Kubernetes Namespace. It assumes that
you have already setup [service principal Kubernetes secret](/vault/docs/platform/k8s/vso/api-reference#hcpauthserviceprincipal),
and have created the HCP Vault Secrets app.

Use the following Kubernetes configuration to sync your HCP Vault Secrets app, `vso-example`,
to the Kubernetes secret, `vso-app-secret`, in the `vso-example-ns` Kubernetes namespace.
The example configuration assumes you already a HCP Vault Secrets app created and have your
[service principal Kubernetes secret](/vault/docs/platform/k8s/vso/api-reference#hcpauthserviceprincipal)
configured.

Refer to the [Kubernetes VSO installation guide](/vault/docs/platform/k8s/vso/installation)
before applying any of the example configurations below.

```yaml
---
apiVersion: secrets.hashicorp.com/v1beta1
kind: HCPAuth
metadata:
  name: hcp-auth
  namespace: vso-example-ns
spec:
  organizationID: xxxxxxxx-76e9-4e17-b5e9-xxxxxxxx4c33
  projectID: xxxxxxxx-bd16-443f-a266-xxxxxxxxcb52
  servicePrincipal:
    secretRef: vso-app-sp
---
apiVersion: secrets.hashicorp.com/v1beta1
kind: HCPVaultSecretsApp
metadata:
  name: vso-app
  namespace: vso-example-ns
spec:
  appName: vso-app
  hcpAuthRef: hcp-auth
  destination:
    create: true
    name: vso-app-secret
```

@include 'vso/blurb-api-reference.mdx'
