checks/filehandler

   1 #!/usr/bin/python
   2 # -*- encoding: utf-8; py-indent-offset: 4 -*-
   3 # +------------------------------------------------------------------+
   4 # |             ____ _               _        __  __ _  __           |
   5 # |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   6 # |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   7 # |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   8 # |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   9 # |                                                                  |
  10 # | Copyright Mathias Kettner 2014             mk@mathias-kettner.de |
  11 # +------------------------------------------------------------------+
  12 #
  13 # This file is part of Check_MK.
  14 # The official homepage is at http://mathias-kettner.de/check_mk.
  15 #
  16 # check_mk is free software;  you can redistribute it and/or modify it
  17 # under the  terms of the  GNU General Public License  as published by
  18 # the Free Software Foundation in version 2.  check_mk is  distributed
  19 # in the hope that it will be useful, but WITHOUT ANY WARRANTY;  with-
  20 # out even the implied warranty of  MERCHANTABILITY  or  FITNESS FOR A
  21 # PARTICULAR PURPOSE. See the  GNU General Public License for more de-
  22 # tails. You should have  received  a copy of the  GNU  General Public
  23 # License along with GNU Make; see the file  COPYING.  If  not,  write
  24 # to the Free Software Foundation, Inc., 51 Franklin St,  Fifth Floor,
  25 # Boston, MA 02110-1301 USA.
  26
  27 # Measures total allocated file handles.
  28 # The output displays
  29 #  - the number of allocated file handles
  30 #  - the number of allocatedly used file handles (with the 2.4 kernel); or
  31 #    the number of allocatedly unused file handles (with the 2.6 kernel)
  32 #  - the maximum files handles that can be allocated
  33 #    (can also be found in /proc/sys/fs/file-max)
  34 # Example output of '/proc/sys/fs/file-nr':
  35 # <<<filehandler>>>
  36 # 9376        0        817805
  37
  38 factory_settings['filehandler_default_levels'] = {'levels': (80.0, 90.0)}
  39
  40
  41 def inventory_filehandler(info):
  42     return [(None, {})]
  43
  44
  45 def check_filehandler(_no_item, params, info):
  46     allocated, _used_or_unused, maximum = info[0]
  47     state = 0
  48     perc = float(allocated) / float(maximum) * 100.0
  49     infotext = '%.1f%% used (%s of %s file handles)' % (perc, allocated, maximum)
  50     warn, crit = params['levels']
  51
  52     if perc >= crit:
  53         state = 2
  54     elif perc >= warn:
  55         state = 1
  56     if state > 0:
  57         infotext += ' (warn/crit at %.1f%%/%.1f%%)' % (warn, crit)
  58
  59     return state, infotext, [('filehandler_perc', perc, warn, crit)]
  60
  61
  62 check_info['filehandler'] = {
  63     'check_function': check_filehandler,
  64     'inventory_function': inventory_filehandler,
  65     'service_description': 'Filehandler',
  66     'has_perfdata': True,
  67     'default_levels_variable': 'filehandler_default_levels',
  68     'group': 'filehandler',
  69 }