This method of setting a static IP for Hassio has been tested with a Hass.io vmdk image on an Esxi server. Log into the HASSOS base system via a console – note this is not the same as an SSH login via the add-on.
Welcome to HassOS
root (no password needed)
hassio > prompt, type
login (as instructed).
From here you will use the
nmcli configuration tool.
# nmcli connection show will list the “HassOS default” connection in use.
# nmcli con edit “HassOS default” will put you in a position to edit the connection.
nmcli> print ipv4 will show you the ipv4 properties of this connection.
To add your static IP address (select ‘yes’ for manual method);
nmcli> set ipv4.addresses 192.168.100.10/24
Do you also want to set 'ipv4.method' to 'manual'? [yes]:
In addition I have found it is wise to set the dns server and the local gateway. For most home routers these will be the same address. If you are using Pi-Hole you can set the dns to that.
nmcli> set ipv4.dns 192.168.100.1
nmcli> set ipv4.gateway 192.168.100.1
If you now view the default connection
cat /etc/NetworkManager/system_connections/default you should see the method is manual and the address is set.
nmcli con reload does not always work so restart the VM.