diff --git a/tools/discover_hosts.sh b/tools/discover_hosts.sh
index 65966c3d04..4ec6a40511 100755
--- a/tools/discover_hosts.sh
+++ b/tools/discover_hosts.sh
@@ -15,4 +15,6 @@
 # In other words this should be run on the primary
 # (API) node in a multi-node setup.
 
-nova-manage cell_v2 discover_hosts --verbose
+if [[ -x $(which nova-manage) ]]; then
+    nova-manage cell_v2 discover_hosts --verbose
+fi