checks/genua_carp

   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 # Example Agent Output:
  28 # GENUA-MIB:
  29
  30 #.1.3.6.1.4.1.3137.2.1.2.1.2.9 = STRING: "carp0"
  31 #.1.3.6.1.4.1.3137.2.1.2.1.2.10 = STRING: "carp1"
  32 #.1.3.6.1.4.1.3137.2.1.2.1.4.9 = INTEGER: 2
  33 #.1.3.6.1.4.1.3137.2.1.2.1.4.10 = INTEGER: 2
  34 #.1.3.6.1.4.1.3137.2.1.2.1.7.9 = INTEGER: 2
  35 #.1.3.6.1.4.1.3137.2.1.2.1.7.10 = INTEGER: 2
  36
  37
  38 def inventory_genua_carp(info):
  39     inventory = []
  40
  41     # remove empty elements due to two alternative enterprise ids in snmp_info
  42     info = filter(None, info)
  43
  44     if info[0]:
  45         for ifName, _ifLinkState, ifCarpState in info[0]:
  46             if ifCarpState in ["0", "1", "2"]:
  47                 inventory.append((ifName, None))
  48     return inventory
  49
  50
  51 def genua_linkstate(st):
  52     names = {
  53         '0': 'unknown',
  54         '1': 'down',
  55         '2': 'up',
  56         '3': 'hd',
  57         '4': 'fd',
  58     }
  59     return names.get(st, st)
  60
  61
  62 def genua_carpstate(st):
  63     names = {
  64         '0': 'init',
  65         '1': 'backup',
  66         '2': 'master',
  67     }
  68     return names.get(st, st)
  69
  70
  71 def check_genua_carp(item, _no_params, info):
  72
  73     # remove empty elements due to two alternative enterprise ids in snmp_info
  74     info = filter(None, info)
  75
  76     if not info[0]:
  77         return (3, "Invalid Output from Agent")
  78     state = 0
  79     nodes = len(info)
  80     masters = 0
  81     output = ""
  82     if nodes > 1:
  83         prefix = "Cluster test: "
  84     else:
  85         prefix = "Node test: "
  86
  87     # Loop over all nodes, just one line if not a cluster
  88     for line in info:
  89         # Loop over interfaces on node
  90         for ifName, ifLinkState, ifCarpState in line:
  91             ifLinkStateStr = genua_linkstate(str(ifLinkState))
  92             ifCarpStateStr = genua_carpstate(str(ifCarpState))
  93             # is inventorized interface in state carp master ?
  94             if ifName == item and ifCarpState == "2":
  95                 # is master
  96                 masters += 1
  97                 if masters == 1:
  98                     if nodes > 1:
  99                         output = "one "
 100                     output += "node in carp state %s with IfLinkState %s" \
 101                         % (ifCarpStateStr,ifLinkStateStr)
 102                     # first master
 103                     if ifLinkState == "2":
 104                         state = 0
 105                     elif ifLinkState == "1":
 106                         state = 2
 107                     elif ifLinkState in ["0", "3"]:
 108                         state = 1
 109                     else:
 110                         state = 3
 111                 else:
 112                     state = 2
 113                     output = "%d nodes in carp state %s on cluster with %d nodes" \
 114                             % (masters,ifCarpStateStr,nodes)
 115             # look for non-masters, only interesting if no cluster
 116             elif ifName == item and nodes == 1:
 117                 output = "node in carp state %s with IfLinkState %s" \
 118                     % (ifCarpStateStr,ifLinkStateStr)
 119                 # carp backup
 120                 if ifCarpState == "1" and ifLinkState == "1":
 121                     state = 0
 122                 else:
 123                     state = 1
 124
 125     # no masters found in cluster
 126     if nodes > 1 and masters == 0:
 127         state = 2
 128         output = "No master found on cluster with %d nodes" % nodes
 129
 130     output = prefix + output
 131     return (state, output)
 132
 133
 134 check_info['genua_carp'] = {
 135     "inventory_function": inventory_genua_carp,
 136     "check_function": check_genua_carp,
 137     "service_description": "Carp Interface %s",
 138     "snmp_info": [
 139         (
 140             ".1.3.6.1.4.1.3137.2.1.2",
 141             [
 142                 "1.2",  # "ifName"
 143                 "1.4",  # "ifLinkState"
 144                 "1.7",  # "ifCarpState"
 145             ]),
 146         (
 147             ".1.3.6.1.4.1.3717.2.1.2",
 148             [
 149                 "1.2",  # "ifName"
 150                 "1.4",  # "ifLinkState"
 151                 "1.7",  # "ifCarpState"
 152             ]),
 153     ],
 154     "snmp_scan_function": scan_genua,
 155     "includes": ["genua.include"],
 156 }