目前的环境是1主1从,想新增一个从节点,使用gs_expansion进行扩容,不知道如何编写配置文件,使用如下配置文件进行扩展报错误:[root@host134 script]# ./gs_expansion -U omm -G dbgrp -X /tmp/cluster_config_template.xml -h 192.168.1.85Traceback (most recent call last): File "/soft/opengauss/script/gs_expansion", line 583, in expansion.getExpansionInfo() File "/soft/opengauss/script/gs_expansion", line 266, in getExpansionInfo self._getClusterInfoDict() File "/soft/opengauss/script/gs_expansion", line 198, in _getClusterInfoDict self.check_xml_config() File "/soft/opengauss/script/gs_expansion", line 406, in check_xml_config xml_cluster_info) File "/soft/opengauss/script/gs_expansion", line 570, in compare_cluster_info raise Exception("XML configuration failed, "Exception: XML configuration failed, node count in expantion XML must be more than static file.配置文件内容如下:[root@host134 tmp]# more cluster_config_template.xml