fix invalid string substitution

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>

diff --git a/ceph_deploy/install.py b/ceph_deploy/install.py
index 8c116178af28a55f455760057f8498947e62d54f..f319d58d5b7f2557cf57da53d09a46d25896e21d 100644 (file)
--- a/ceph_deploy/install.py
+++ b/ceph_deploy/install.py
@@ -111,7 +111,7 @@ def purge_data(args):
         distro.conn.exit()
 
     if installed_hosts:
-        LOG.error("ceph is still installed on: ", installed_hosts)
+        LOG.error("ceph is still installed on: %s", installed_hosts)
         raise RuntimeError("refusing to purge data while ceph is still installed")
 
     for hostname in args.host: