diff --git a/csst_common/data/dfs_conf.yml b/csst_common/data/dfs_conf.yml
index 7548188b93b2024a0c11fc47ba1c644fa9268196..397a25a9591e24cec010aaf178b8e87db04d553d 100644
--- a/csst_common/data/dfs_conf.yml
+++ b/csst_common/data/dfs_conf.yml
@@ -5,7 +5,7 @@ pml:
   CSST_DFS_APP_ID: test
   CSST_DFS_APP_TOKEN: test
 
-local:
+kmust:
   CSST_DFS_API_MODE: cluster
   CSST_DFS_GATEWAY: 222.197.214.168:30880
   CSST_DFS_APP_ID: 1
diff --git a/csst_common/data_manager.py b/csst_common/data_manager.py
index 3c050cb8383a4cc6839b98b02c9910b3ab5417eb..1e4f652df28e62c437582625d47f31aed2a8d404 100644
--- a/csst_common/data_manager.py
+++ b/csst_common/data_manager.py
@@ -69,7 +69,7 @@ class CsstMsDataManager:
         The aux data directory (bias, flat, dark).
     dfs_mode : bool
         DFS mode. If True, ``CsstMsDataManager`` will use DFS.
-    node : str
+    dfs_node : str
         The environment in which the pipeline will run.
         Use "pml" for Purple Mountain Lab cluster and "local" for others.
     _exp_id : int
@@ -119,7 +119,7 @@ class CsstMsDataManager:
                  dir_l1: str = ".",
                  path_aux: str = "",  # bias dark flat
                  dfs_mode: bool = False,
-                 node: str = "local",
+                 dfs_node: str = "kmust",
                  _exp_id: int = 100000100,
                  _exp_start: int = 20270810081950,
                  _exp_stop: int = 20270810082220,
@@ -171,10 +171,10 @@ class CsstMsDataManager:
         # for catalog query
         self.dfs_mode = dfs_mode
         # for DFS configuration, defaults to "local", could be "pml"
-        assert node in DFS_CONF.keys()
-        self.node = node
-        for k, v in DFS_CONF[node].items():
-            os.putenv(k, v)
+        assert dfs_node in DFS_CONF.keys()
+        self.node = dfs_node
+        for k, v in DFS_CONF[dfs_node].items():
+            os.putenv(k, f"{v}")
 
         # data directory
         self.dir_l0 = dir_l0
@@ -189,7 +189,7 @@ class CsstMsDataManager:
         raise NotImplementedError("from_dfs is currently not available!")
 
     @staticmethod
-    def from_dir(ver_sim="C5.2", datatype="mbi", dir_l0=".", dir_l1=".", path_aux="", dfs_mode=False, node="local"):
+    def from_dir(ver_sim="C5.2", datatype="mbi", dir_l0=".", dir_l1=".", path_aux="", dfs_mode=False, dfs_node="kmust"):
         """ initialize the multi-band imaging data manager """
 
         assert ver_sim in ["C5.2", ]
@@ -220,7 +220,7 @@ class CsstMsDataManager:
                                  dir_l1=dir_l1,
                                  path_aux=path_aux,  # bias dark flat
                                  dfs_mode=dfs_mode,
-                                 node=node,
+                                 dfs_node=dfs_node,
                                  _exp_id=_exp_id,
                                  _exp_start=_exp_start,
                                  _exp_stop=_exp_stop,
@@ -393,7 +393,7 @@ class CsstMsDataManager:
         return info
 
     @staticmethod
-    def quickstart(ver_sim="C5.2", datatype="mbi", dir_l1=".", exposure_id=100, dfs_mode=False, node="local"):
+    def quickstart(ver_sim="C5.2", datatype="mbi", dir_l1=".", exposure_id=100, dfs_mode=False, dfs_node="kmust"):
         """Quick dataset generator for tests on dandelion or PMO
 
         Parameters
@@ -408,8 +408,8 @@ class CsstMsDataManager:
             The serial number of the exposure. 20-154 for C5.2.
         dfs_mode : bool
             If True, use DFS.
-        node : str
-            The node in which this program runs. Defaults to "local", could be "pml".
+        dfs_node : str
+            The DFS node. Defaults to "kmust", could be "pml".
 
         Returns
         -------
@@ -446,7 +446,7 @@ class CsstMsDataManager:
 
         return CsstMsDataManager.from_dir(
             ver_sim=ver_sim, datatype=datatype, dir_l0=dir_l0, dir_l1=dir_l1, path_aux=path_aux,
-            dfs_mode=dfs_mode, node=node)
+            dfs_mode=dfs_mode, dfs_node=dfs_node)
 
     def query_rc(self, ra=180, dec=0, radius=2, min_mag=0, max_mag=20, obstime=-1, limit=-1):
         """ Query Reference Catalog (RC) from DFS """