Index: /tools/active.py
===================================================================
--- /tools/active.py	(revision 10565)
+++ /tools/active.py	(revision 10565)
@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+#
+# Script to create nagios output files from gformat configurtion files
+#
+# Original: Richard van Mansom <richardvm@wirelessleiden.nl>
+# Rick van der Zwet <rick@wirelessleiden.nl>
+
+import gformat
+
+def is_iris(node):
+  return node.has_key('release') and node['release'] in ['8.0-RELEASE', '7.2-RELEASE', '8.1-RELEASE', '8.2-RELEASE', '9.0-RELEASE']
+
+def is_up(datadump):
+  return datadump['status'] == 'up'
+
+if __name__ == '__main__':
+  # Process all hosts
+  for host in gformat.get_hostlist():
+    datadump = gformat.get_yaml(host)
+
+    # Make sure to process only active IRIS nodes
+    if not is_iris(datadump) or not is_up(datadump):
+      continue
+
+    print host
+