checks/mongodb_mem

   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 # <<<mongodb_mem>>>
  28 # resident 856
  29 # supported True
  30 # virtual 6100
  31 # mappedWithJournal 5374
  32 # mapped 2687
  33 # bits 64
  34 # note fields vary by platform
  35 # page_faults 86
  36 # heap_usage_bytes 65501032
  37
  38 def inventory_mongodb_mem(info):
  39     return [(None, {})]
  40
  41 def check_mongodb_mem(_no_item, params, info):
  42     info_dict = {x[0] : " ".join(x[1:]) for x in info}
  43
  44     for what in [ "resident", "virtual", "mapped" ]:
  45         value_bytes = int(info_dict[what]) * 1024 **2
  46         warn, crit = None, None
  47         state = 0
  48         if "%s_levels" % what in params:
  49             warn, crit = params["%s_levels" % what]
  50             if value_bytes >= crit:
  51                 state = 2
  52             elif value_bytes >= warn:
  53                 state = 1
  54         yield state, "%s usage: %s" % (what.title(), get_bytes_human_readable(value_bytes)),\
  55                     [ ("process_%s_size" % what, value_bytes, warn, crit) ]
  56
  57     # MongoDB doc: If virtual value is significantly larger than mapped (e.g. 3 or more times),
  58     #              this may indicate a memory leak.
  59     virtual_bytes  = float(info_dict["virtual"])
  60     mapped_bytes   = float(info_dict["mapped"])
  61     virt_mapped_factor = virtual_bytes / mapped_bytes
  62     if virt_mapped_factor >= 3:
  63         yield 1, "Virtual size is %.1f times the mapped size (Possible memory leak)" % virt_mapped_factor
  64
  65 check_info['mongodb_mem'] = {
  66     "inventory_function"      : inventory_mongodb_mem,
  67     "check_function"          : check_mongodb_mem,
  68     "service_description"     : "Memory used MongoDB",
  69     "group"                   : "mongodb_mem",
  70     "has_perfdata"            : True
  71 }