Clustername'));
                        if ($("#instance_name").val()) {
                            $("#instance_name").selectpicker().trigger("change");
                        }
                    }
                },
                success: function (data) {
                    if (data.status === 0) {
                        $("optgroup[id^='optgroup']").empty();
                        let result = data['data']
                        const supportDb = [ {% for name in engines.keys %}"{{ name }}", {