21121: Optional prometheus support

Arvados-DCO-1.1-Signed-off-by: Peter Amstutz <peter.amstutz@curii.com>

diff --git a/tools/cluster-activity/arvados_cluster_activity/main.py b/tools/cluster-activity/arvados_cluster_activity/main.py
index f677d7f3ee54118b0dd388d786d11682d97ac062..e01b00230b20f9374d6b53f9b7b416034c41a3c3 100755 (executable)
--- a/tools/cluster-activity/arvados_cluster_activity/main.py
+++ b/tools/cluster-activity/arvados_cluster_activity/main.py
@@ -69,7 +69,7 @@ def parse_arguments(arguments):
             exit(1)
 
 
-    if args.prometheus_auth:
+    if prometheus_support and args.prometheus_auth:
         with open(args.prometheus_auth, "rt") as f:
             for line in f:
                 sp = line.strip().split("=")