Add nova and keystone plugin for openstack essex

plugins/nova/nova_instance_launched

@@ -0,0 +1,53 @@
+#!/usr/bin/env python
+#
+# Plugin to monitor instances launched from beginning of time
+#
+# To monitor a floating ips, link floating_ips to this file.
+# E.g.
+#    ln -s /usr/share/munin/plugins/nova_instance_launched /etc/munin/plugins/
+#
+# Needs following minimal configuration in plugin-conf.d/nova:
+#   [nova_*]
+#   user nova
+#
+# Magic markers
+#%# capabilities=autoconf
+#%# family=nova
+
+from nova import context
+from nova import db
+from nova import flags
+from nova import utils
+from nova.db.sqlalchemy.session import get_session
+import sys
+
+def print_config():
+    global states
+    print 'graph_title Nova Instances Launched'
+    print 'graph_vlabel qty'
+    print 'graph_args --base 1000 --lower-limit 0'
+    print 'graph_category nova'
+    print 'graph_scale no'
+    print 'graph_info This graph shows the number of instances launched since the beginning of time'
+    print 'instances.label instances'
+    print 'instances.draw LINE2'
+
+def get_status():
+    connection = get_session().connection()
+    row = connection.execute("select count(*) from instances").fetchall()[0]
+    return row[0]
+
+def print_values():
+    qty = get_status()
+    print "instances.value %s" % qty
+
+if __name__ == '__main__':
+    if len(sys.argv) > 1:
+        if sys.argv[1] == "config":
+            print_config()
+        elif sys.argv[1]=="autoconf" :
+            print "yes"
+    else:
+        utils.default_flagfile()
+        flags.FLAGS(sys.argv)       
+        print_values()