Munin contributed plugins

#!/usr/bin/env python3

"""

=head1 NAME

nova_services - report nova service status

=head1 CONFIGURATION

Needs following minimal configuration in plugin-conf.d/nova:

 [nova_*]

 user nova

=head1 AUTHORS

Copyright 2012 Mehdi Abaakouk <sileht@sileht.net>

=head1 MAGIC MARKERS

 #%# capabilities=autoconf

 #%# family=auto

=cut

"""

import sys

try:

    from nova import context, db, flags, utils

except ImportError:

    successful_import = False

else:

    successful_import = True

services = [

    'nova-compute',

    'nova-volume',

    'nova-scheduler',

    'nova-vncproxy',

    'nova-network',

    'nova-cert',

    'nova-console',

    'nova-consoleauth',

]

def print_config():

    print('graph_title Nova Services')

    print('graph_vlabel qty')

    print('graph_args --base 1000 --lower-limit 0')

    print('graph_category cloud')

    print('graph_scale no')

    print('graph_info Nova services - alive and active')

    for service in services:

        print('%s_alive.label %s alive' % (service, service))

        print('%s_alive.draw LINE2' % service)

        print('%s_alive.info seen in last 30 seconds' % service)

        print('%s_active.label %s active' % (service, service))

        print('%s_active.draw LINE2' % service)

        print('%s_active.info alive and enabled' % service)

def get_status():

    global services

    alive = {}

    active = {}

    for k in services:

        alive[k] = 0

        active[k] = 0

    ctxt = context.get_admin_context()

    now = utils.utcnow()

    services = db.service_get_all(ctxt)

    for svc in services:

        delta = now - (svc['updated_at'] or svc['created_at'])

        if (delta.seconds <= 30):

            alive[svc['binary']] += 1

            if not svc['disabled']:

                active[svc['binary']] += 1

    return {'alive': alive, 'active': active}

def print_values():

    status = get_status()

    for (state, value) in status['alive'].items():

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

    for (state, value) in status['active'].items():

        print("%s_active.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 successful_import:

                print('no (failed import nova module]')

            else:

                print('yes')

    elif successful_import:

        utils.default_flagfile()

        flags.FLAGS(sys.argv)

        print_values()