Add a deterministic sleep to spread out the load and lets run it at night in test

manifests/app_type.pp

@@ -114,7 +114,7 @@ define sunetdrive::app_type (
         command => '/usr/local/bin/scan_external_mounts',
         user    => 'root',
         minute  => '20',
-        hour    => '10',
+        hour    => '1',
       }
     }
     file { '/opt/nextcloud/cron.sh':

manifests/multinode.pp

@@ -59,7 +59,7 @@ class sunetdrive::multinode (
       command => '/usr/local/bin/scan_external_mounts',
       user    => 'root',
       minute  => '20',
-      hour    => '10',
+      hour    => '1',
     }
   }
   file { '/usr/local/bin/nocc':

templates/application/scan_external_mounts.sh

@@ -1,4 +1,7 @@
 #!/bin/bash
+# We sleep a deterministic amount of time, which will be between 0 an 128 m and allways the same within
+# a specific host, but will differ between hosts
+sleep $((16#$(ip a | grep "link/ether" | head -1 | awk -F ':' '{print $6}' | awk '{print $1}') / 2))m
 
 # Only run if this is the only instance of this script running
 # note: since this script forks to run pgrep, we need -eq 2 here