You place a host in maintenance mode to service it, for example, to install more memory. A host enters or leaves maintenance mode only as the result of a user request.

esxcli system maintenanceMode set allows you to enable or disable maintenance mode.

When you run the vicfg-hostops vCLI command, you can specify one of the options listed in Connection Options for vCLI Host Management Commands in place of <conn_options>.

Procedure
1

To enter maintenance mode, run the following command. 

esxcli <conn_options> system maintenanceMode set --enable true

After all virtual machines on the host have been suspended or migrated, the host enters maintenance mode.

Note

You cannot deploy or power on a virtual machine on hosts in maintenance mode.

2

To exit maintenance mode, run the following command. 

esxcli <conn_options> system maintenanceMode set --enable false
Note

If you attempt to exit maintenance mode when the host is no longer in maintenance mode, an error informs you that maintenance mode is already disabled.