Munin contributed plugins

#!/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=auto

import sys

try:

    from nova import context

    from nova import db

    from nova import flags

    from nova import utils

    from nova.db.sqlalchemy.session import get_session

except ImportError:

    successful_import = False

else:

    successful_import = True

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 cloud'

    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" :

            if not successful_import:

                print 'no (failed import nova module)'

                sys.exit(0)

            else:

                print 'yes'

    elif successful_import:

        utils.default_flagfile()

        flags.FLAGS(sys.argv)

        print_values()