Munin contributed plugins

#!/usr/bin/env python

#

# Plugin to monitor status of Floating IPs in Nova

#

# To monitor a floating ips, link floating_ips to this file.

# E.g.

#    ln -s /usr/share/munin/plugins/nova_floating_ips /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

except ImportError:

    succesful_import = False

else:

    succesful_import = True

states = ['total', 'allocated', 'associated']

def print_config():

    global states

    print 'graph_title Nova Floating IPs'

    print 'graph_vlabel IPs'

    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 Floating IPs in Nova and their status'

    for state in states:

        print '%s.label %s' % (state, state)

        print '%s.draw LINE2' % state

        print '%s.info %s IPs' % (state, state)

def get_status():

    status = {}

    for k in states:

        status[k] = 0

    ctxt = context.get_admin_context()

    floating_ips = db.floating_ip_get_all(ctxt)

    for floating_ip in floating_ips:

        status['total'] += 1

        if floating_ip['fixed_ip_id']:

            status['associated'] += 1

        if floating_ip['project_id']:

            status['allocated'] += 1

    return status

def print_values():

    status = get_status()

    for (state, value) in status.iteritems():

        print "%s.value %s" % (state, value)

if __name__ == '__main__':

    if len(sys.argv) > 1:

        if sys.argv[1] == "config":

            print_config()

        elif sys.argv[1] == "autoconf":

            if not succesful_import:  

                print 'no (failed import nova module)'

                sys.exit(0)

            else:

                print 'yes'

    elif succesful_import:

        utils.default_flagfile()

        flags.FLAGS(sys.argv)

        print_values()