На сайте HA в разделе Addon's написано (https://www.home-assistant.io/addons/):
Add-ons are only available if you've used the Home Assistant Operating System or Home Assistant Supervised installation method. If you installed Home Assistant using any other method then you cannot use add-ons. Often you can achieve the same manually, refer to the documentation by the vendor of the application you'd like to install.
Я бы запихнул HA в виртуалку, тем более что для HAOS уже есть готовые образы для KVM (https://www.home-assistant.io/installation/linux).
Комментарий к статье: Устанавливаем Home Assistant на Ubuntu server
На сайте HA в разделе Addon's написано (https://www.home-assistant.io/addons/):
Add-ons are only available if you've used the Home Assistant Operating System or Home Assistant Supervised installation method. If you installed Home Assistant using any other method then you cannot use add-ons. Often you can achieve the same manually, refer to the documentation by the vendor of the application you'd like to install.
Я бы запихнул HA в виртуалку, тем более что для HAOS уже есть готовые образы для KVM (https://www.home-assistant.io/installation/linux).