kubeadm_upgrade_apply_phase_preflight [page]deterministic
### Synopsis
Run preflight checks before upgrade
``` kubeadm upgrade apply phase preflight [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">--allow-experimental-upgrades</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Show unstable versions of Kubernetes as an upgrade alternative and allow upgrading to an alpha/beta/release candidate versions of Kubernetes.</p></td> </tr>
<tr> <td colspan="2">--allow-release-candidate-upgrades</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Show release candidate versions of Kubernetes as an upgrade alternative and allow upgrading to a release candidate versions of Kubernetes.</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">--dry-run</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Do not change any state, just output what actions would be performed.</p></td> </tr>
<tr> <td colspan="2">-f, --force</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Force upgrading although some requirements might not be met. This also implies non-interactive mode.</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 preflight</p></td> </tr>
<tr> <td colspan="2">--ignore-preflight-errors strings</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>A list of checks whose errors will be shown as warnings. Example: 'IsPrivilegedUser,Swap'. Value 'all' ignores errors from all checks.</p></td> </tr>
<tr> <td colspan="2">--kubeconfig string 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>
<tr> <td colspan="2">-y, --yes</td> </tr> <tr> <td></td><td style="line-height: 130%; word-wrap: break-word;"><p>Perform the upgrade and do not prompt for confirmation (non-interactive mode).</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>