type ha to open your homeassistant webinterface in your default browser. type ha restart/check/update to restart, check the config or update your ha instance
Set the Vars as needed
url: URL you are accessing your HA from including protocol. (https://homeassistant.example.org) api_key: Homeassistant Key. Create at url/profile or click your username bubble in the top left corner of your ha UI; scroll down and create a token. ssh username: Username of your Homassistant host. (root on hassio) host: if you are using hassio, hassio.local should be fine, else replace with your ip. I assume you have accepted the fingerprint and working ssh key auth.