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====== Backup ESXi Configuration ======


To backup the ESXi configuration we can do this via the esxi shell. 

First we need to Sync the config by running this

<code shell [enable_line_numbers="true"]>vim-cmd hostsvc/firmware/sync_config</code>

To back-up the configuration data run this command

<code shell [enable_line_numbers="true"]>vim-cmd hostsvc/firmware/backup_config</code>

This command will output a URL which can then be downloaded by a remote client. 

You can use curl, wget, or even a browser to download the file. 

[[https://kb.vmware.com/s/article/2042141]]

===== To Restore the Configuration on a new ESXi Hypervisor =====


First rename the configuration file to 

<code [enable_line_numbers="true"]>configBundle.tgz</code>

Now Put the host into maintenance mode by running this command

<code shell [enable_line_numbers="true"]>vim-cmd hostsvc/maintenance_mode_enter</code>

Copy the backup configuration file to the ESXi host or an available datastore (or mount a NFS volume and put it there)

Run this command to restore the ESXi hosts configuration (replace backup_location with the location you put the file)

<code shell [enable_line_numbers="true"]>vim-cmd hostsvc/firmware/restore_config /backup_location/configBundle.tgz</code>

If you receive a UUID mismatch, then you can override this by adding a 1 (digit 1) after restore_config, but this will ONLY work if you are not using TPMS. 

<code shell [enable_line_numbers="true"]>vim-cmd hostsvc/firmware/restore_config 1 /tmp/configBundle.tgz</code>

Executing this command will initiate an automatic reboot of the host after command completion.