# 

LLMS index: [llms.txt](/llms.txt)

---

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### Synopsis


Download certificates shared among control-plane nodes from the kubeadm-certs Secret

```
kubeadm join phase control-plane-prepare download-certs [api-server-endpoint] [flags]
```

### Options

   <table style="width: 100%; table-layout: fixed;">
<colgroup>
<col span="1" style="width: 10px;" />
<col span="1" />
</colgroup>
<tbody>

<tr>
<td colspan="2">--certificate-key string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Use this key to decrypt the certificate secrets uploaded by init. The certificate key is a hex encoded string that is an AES key of size 32 bytes.</p></td>
</tr>

<tr>
<td colspan="2">--config string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Path to a kubeadm configuration file.</p></td>
</tr>

<tr>
<td colspan="2">--control-plane</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Create a new control plane instance on this node</p></td>
</tr>

<tr>
<td colspan="2">--discovery-file string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>For file-based discovery, a file or URL from which to load cluster information.</p></td>
</tr>

<tr>
<td colspan="2">--discovery-token string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>For token-based discovery, the token used to validate cluster information fetched from the API server.</p></td>
</tr>

<tr>
<td colspan="2">--discovery-token-ca-cert-hash strings</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>For token-based discovery, validate that the root CA public key matches this hash (format: &quot;&lt;type&gt;:&lt;value&gt;&quot;).</p></td>
</tr>

<tr>
<td colspan="2">--discovery-token-unsafe-skip-ca-verification</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>For token-based discovery, allow joining without --discovery-token-ca-cert-hash pinning.</p></td>
</tr>

<tr>
<td colspan="2">--dry-run</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Don't apply any changes; just output what would be done.</p></td>
</tr>

<tr>
<td colspan="2">-h, --help</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>help for download-certs</p></td>
</tr>

<tr>
<td colspan="2">--tls-bootstrap-token string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Specify the token used to temporarily authenticate with the Kubernetes Control Plane while joining the node.</p></td>
</tr>

<tr>
<td colspan="2">--token string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Use this token for both discovery-token and tls-bootstrap-token when those values are not provided.</p></td>
</tr>

</tbody>
</table>



### Options inherited from parent commands

   <table style="width: 100%; table-layout: fixed;">
<colgroup>
<col span="1" style="width: 10px;" />
<col span="1" />
</colgroup>
<tbody>

<tr>
<td colspan="2">--rootfs string</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>The path to the 'real' host root filesystem. This will cause kubeadm to chroot into the provided path.</p></td>
</tr>

</tbody>
</table>