checks/cpu

   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 # Output is taken from /proc/loadavg plus the number of cores:
  28 # 0.26 0.47 0.52 2/459 19531 4
  29
  30 #   .--Load----------------------------------------------------------------.
  31 #   |                       _                    _                         |
  32 #   |                      | |    ___   __ _  __| |                        |
  33 #   |                      | |   / _ \ / _` |/ _` |                        |
  34 #   |                      | |__| (_) | (_| | (_| |                        |
  35 #   |                      |_____\___/ \__,_|\__,_|                        |
  36 #   |                                                                      |
  37 #   '----------------------------------------------------------------------'
  38
  39 cpuload_default_levels = (5.0, 10.0)
  40
  41
  42 def inventory_cpu_load(info):
  43     if len(info) >= 1 and len(info[0]) >= 5:
  44         return [(None, "cpuload_default_levels")]
  45
  46
  47 def check_cpu_load(item, params, info):
  48     if not info:
  49         return None
  50
  51     if len(info[0]) >= 6:
  52         # There have been broken AIX agents for a long time which produced data like follows.
  53         # Newer agents deal with this, but to be nice to old agents: deal with it.
  54         # <<<cpu>>>
  55         # 0.00 0.00 0.00 1/97 8913088 aixxyz configuration: @lcpu=8 @mem=24576MB @ent=0.20
  56         line = " ".join(info[0])
  57         if "lcpu=" in line:
  58             for part in info[0]:
  59                 if "lcpu=" in part:
  60                     num_cpus = int(part.split("=", 1)[1])
  61                     break
  62         else:
  63             num_cpus = int(info[0][5])
  64     else:
  65         num_cpus = 1
  66
  67     load = map(float, info[0][0:3])
  68     return check_cpu_load_generic(params, load, num_cpus)
  69
  70
  71 check_info["cpu.loads"] = {
  72     "check_function": check_cpu_load,
  73     "inventory_function": inventory_cpu_load,
  74     "service_description": "CPU load",
  75     "has_perfdata": True,
  76     "group": "cpu_load",
  77     "includes": ["cpu_load.include"],
  78     "handle_real_time_checks": True,
  79 }
  80
  81 #.
  82 #   .--Threads-------------------------------------------------------------.
  83 #   |                _____ _                        _                      |
  84 #   |               |_   _| |__  _ __ ___  __ _  __| |___                  |
  85 #   |                 | | | '_ \| '__/ _ \/ _` |/ _` / __|                 |
  86 #   |                 | | | | | | | |  __/ (_| | (_| \__ \                 |
  87 #   |                 |_| |_| |_|_|  \___|\__,_|\__,_|___/                 |
  88 #   |                                                                      |
  89 #   '----------------------------------------------------------------------'
  90
  91 threads_default_levels = {}  # legacy default levels variable
  92
  93 factory_settings["cpu_threads_default_levels"] = {
  94     "levels": (2000, 4000),
  95 }
  96
  97
  98 def inventory_cpu_threads(info):
  99     if len(info) >= 1 and len(info[0]) >= 5:
 100         return [(None, {})]
 101
 102
 103 def check_cpu_threads(item, params, info):
 104     if isinstance(params, tuple):
 105         params = {'levels': params}
 106
 107     try:
 108         num_threads = int(info[0][3].split('/')[1])
 109     except:
 110         yield (3, "invalid output from plugin")
 111         return
 112
 113     absolute_levels = params.get("levels", (None, None))
 114     yield check_levels(
 115         num_threads,
 116         'threads',
 117         absolute_levels,
 118         unit="threads",
 119         human_readable_func=lambda x: "%.f" % x,
 120         infoname="Count")
 121
 122     if len(info) > 1:
 123         max_threads = int(info[1][0])
 124         thread_usage = 100.0 * num_threads / max_threads
 125         relative_levels = params.get("levels_percent", (None, None))
 126         yield check_levels(
 127             thread_usage,
 128             'thread_usage',
 129             relative_levels,
 130             human_readable_func=get_percent_human_readable,
 131             infoname="Usage")
 132
 133
 134 check_info["cpu.threads"] = {
 135     "check_function": check_cpu_threads,
 136     "inventory_function": inventory_cpu_threads,
 137     "service_description": "Number of threads",
 138     "has_perfdata": True,
 139     "group": "threads",
 140     "default_levels_variable": "cpu_threads_default_levels",
 141     "handle_real_time_checks": True,
 142 }