# 

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

---

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### Synopsis


Renew the certificate for etcd nodes to communicate with each other.

Renewals run unconditionally, regardless of certificate expiration date; extra attributes such as SANs will be based on the existing file/certificates, there is no need to resupply them.

Renewal by default tries to use the certificate authority in the local PKI managed by kubeadm; as alternative it is possible to use K8s certificate API for certificate renewal, or as a last option, to generate a CSR request.

After renewal, in order to make changes effective, is required to restart control-plane components and eventually re-distribute the renewed certificate in case the file is used elsewhere.

```
kubeadm certs renew etcd-peer [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">--cert-dir string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default: "/etc/kubernetes/pki"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>The path where to save the certificates</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">-h, --help</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>help for etcd-peer</p></td>
</tr>

<tr>
<td colspan="2">--kubeconfig string&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Default: "/etc/kubernetes/admin.conf"</td>
</tr>
<tr>
<td></td><td style="line-height: 130%; word-wrap: break-word;"><p>The kubeconfig file to use when talking to the cluster. If the flag is not set, a set of standard locations can be searched for an existing kubeconfig file.</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>