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#!/usr/bin/python3
#
# Copyright 2016 Canonical Ltd
#
# Author: Brad Marshall <brad.marshall@canonical.com>
#
# Based on check_upstart_job and https://zignar.net/2014/09/08/getting-started-with-dbus-python-systemd/
#
import dbus, sys
service_arg = sys.argv[1]
service_name = "%s.service" % service_arg
try:
bus = dbus.SystemBus()
systemd = bus.get_object('org.freedesktop.systemd1', '/org/freedesktop/systemd1')
manager = dbus.Interface(systemd, dbus_interface='org.freedesktop.systemd1.Manager')
try:
service_unit = manager.LoadUnit(service_name)
service_proxy = bus.get_object('org.freedesktop.systemd1', str(service_unit))
service = dbus.Interface(service_proxy, dbus_interface='org.freedesktop.systemd1.Unit')
service_res = service_proxy.Get('org.freedesktop.systemd1.Unit','SubState', dbus_interface='org.freedesktop.DBus.Properties')
if service_res == 'running':
print('OK: %s is running' % service_name)
sys.exit(0)
else:
print('CRITICAL: %s is not running' % service_name)
sys.exit(2)
except dbus.DBusException as e:
print('CRITICAL: unable to find %s in systemd' % service_name)
sys.exit(2)
except dbus.DBusException as e:
print('CRITICAL: unable to connect to system for %s' % service_name)
sys.exit(2)