def METHOD_NAME(ctx, host, scenario_name):  # pragma: no cover
    """Log in to one instance."""
    args = ctx.obj.get("args")
    subcommand = base._get_subcommand(__name__)
    command_args = {"subcommand": subcommand, "host": host}
    s = scenarios.Scenarios(base.get_configs(args, command_args), scenario_name)
    for scenario in s.all:
        base.execute_subcommand(scenario.config, subcommand)