{ "server_url": "http://192.168.1.12:8000", "listen_addr": "0.0.0.0:8000", "private_key_path": "private.key", "derp_map_path": "derp.yaml", "db_host": "localhost", "db_port": 5432, "db_name": "headscale", "db_user": "foo", "db_pass": "bar" }