hddtemp sensor platform is using the data provided by HDDTemp.
It required that
hddtemp is started or running in daemon mode on a local or remote system.
You can’t use this sensor in a container (only Home Assistant Core is supported) as it requires access to
hddtemp which is not available in a container-based setup.
To setup a HDDTemp to your installation, add the following to your
# Example configuration.yaml entry
- platform: hddtemp