checks/netstat.include

   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 # Item is a user defined identifier of the connection.
  28 # Example for params:
  29 # {
  30 #    "proto"       : "UDP",
  31 #    "local_ip"    : "10.1.1.99",
  32 #    "remote_port" : 5665,
  33 #    "state"       : "ESTABLISHED",
  34 # }
  35 # Other keys: local_port, remote_ip. Missing entries do not care.
  36
  37
  38 def check_netstat_generic(item, params, connections):
  39     found = 0
  40     for proto, (local_ip, local_port), (remote_ip, remote_port), connstate in connections:
  41         # Beware: port numbers are strings here.
  42         match = True
  43         for k, v in [
  44             ("local_ip", local_ip),
  45             ("local_port", local_port),
  46             ("remote_ip", remote_ip),
  47             ("remote_port", remote_port),
  48             ("proto", proto),
  49             ("state", connstate),
  50         ]:
  51             if k in params and str(params[k]) != v:
  52                 match = False
  53                 break
  54         if match:
  55             found += 1
  56
  57     infotext = "Found %d matching entries" % found
  58     states = [0]
  59     if params.get("min_states"):
  60         min_warn, min_crit = params["min_states"]
  61         if found < min_crit:
  62             min_state = 2
  63         elif found < min_warn:
  64             min_state = 1
  65         else:
  66             min_state = 0
  67         if min_state:
  68             states.append(min_state)
  69             infotext += " (warn/crit below %d/%d)" % (min_warn, min_crit)
  70
  71     if params.get("max_states"):
  72         max_warn, max_crit = params["max_states"]
  73         perfdata = [("connections", found, max_warn, max_crit)]
  74         if found >= max_crit:
  75             max_state = 2
  76         elif found >= max_warn:
  77             max_state = 1
  78         else:
  79             max_state = 0
  80         if max_state:
  81             states.append(max_state)
  82             infotext += " (warn/crit at %d/%d)" % (max_warn, max_crit)
  83     else:
  84         perfdata = [("connections", found)]
  85
  86     yield max(states), infotext, perfdata