diff --git a/clusterman/commands/node.py b/clusterman/commands/node.py
index ddadc49..087f0df 100644
--- a/clusterman/commands/node.py
+++ b/clusterman/commands/node.py
@@ -92,4 +92,4 @@ def exec(command):
     print(["ssh", "-i", CONF["ssh_key_path"], command])
     for ip in get_node_list():
         print("----- Node {} -----".format(ip))
-        subprocess.run(["ssh", "-i", CONF["ssh_key_path"],"root@"+ip, " ".join(command)])
+        subprocess.run(["ssh","-o", "StrictHostKeyChecking=no", "-i", CONF["ssh_key_path"],"root@"+ip, " ".join(command)])