--enable-module or -e

<module>[,<module>]

Enables the specified Apache module.

To enable the auth_basic Apache module:

plesk bin optimization_settings -e auth_basic

--disable-module or -d

<module>[,<module>]

Disables the specified Apache module.

To disable the auth_basic Apache module:

plesk bin optimization_settings -d auth_basic

--status or -s

Displays the status of all Apache modules.

To see the status of all Apache modules:

plesk bin optimization_settings -s

--set-mpm

prefork|event

Sets the Apache MPM mode.

To set the Apache MPM mode to prefork:

plesk bin optimization_settings --set-mpm prefork

--get-mpm

Displays the current Apache MPM mode

To see the currently selected Apache MPM mode:

plesk bin optimization_settings --get-mpm

--help or -h

Displays the help page.

To see the help page:

plesk bin optimization_settings -h