diff --git a/xCAT-server/share/xcat/install/scripts/post.rhels7 b/xCAT-server/share/xcat/install/scripts/post.rhels7
index 41127db68..571e63277 100644
--- a/xCAT-server/share/xcat/install/scripts/post.rhels7
+++ b/xCAT-server/share/xcat/install/scripts/post.rhels7
@@ -11,3 +11,18 @@ do
   #nic name change during the install and first_reboot
   sed -i '/HWADDR/d' $i
 done
+
+  if[ -f "/usr/lib/systemd/system/NetworkManager.service" ];then
+    systemctl stop NetworkManager
+    systemctl disable NetworkManager
+  fi
+
+  if[ -f "/usr/lib/systemd/system/NetworkManager-dispatcher.service" ];then
+    systemctl stop NetworkManager-dispatcher
+    systemctl disable NetworkManager-dispatcher
+  fi
+  
+  if[ -f "/usr/lib/systemd/system/NetworkManager-wait-online.service" ];then
+    systemctl stop NetworkManager-wait-online
+    systemctl disable NetworkManager-wait-online
+  fi