gatherkeys.py: Require at least one argument.

Signed-off-by: Gary Lowell  <gary.lowell@inktank.com>

diff --git a/ceph_deploy/gatherkeys.py b/ceph_deploy/gatherkeys.py
index 0557cb9ef9ffdb048e697fd6e344ae447fa06598..390ecb25398c5a50a432982f54d43ec4508ad99a 100644 (file)
--- a/ceph_deploy/gatherkeys.py
+++ b/ceph_deploy/gatherkeys.py
@@ -79,7 +79,7 @@ def make(parser):
     parser.add_argument(
         'mon',
         metavar='HOST',
-        nargs='*',
+        nargs='+',
         help='monitor host to pull keys from',
         )
     parser.set_defaults(