ar status = data.status;
              if (status == 1) {
                $('#' + instance_select).selectpicker('destroy');
                var appInstanceList = data.appInstanceList;
                $('#' + instance_select).append("<option value=''>所有主节点</option>");
                for (var i = 0; i < appInstanceList.length; i++) {
                  var val = appInstanceList[i].hostPort;
                  var term = appInstanceList[i].hostPort + '（角色：' + appInstanceList[i].roleDesc + '）