checks/f5_bigip_pool

   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 # Agent / MIB output
  28 # see: 1.3.6.1.4.1.3375.2.2.5.1.2.1
  29 # F5-BIGIP-LOCAL-MIB::ltmPoolName.              8.80.111.111.108.asci_encoded_str = Pool_NMA
  30 # F5-BIGIP-LOCAL-MIB::ltmPoolMemberCnt.         8.80.111.111.108.95.78.77.65 = 2
  31 # F5-BIGIP-LOCAL-MIB::ltmPoolActiveMemberCnt.   8.80.111.111.108.95.78.77.65 = 0
  32
  33 # warn, crit numbers of pool members
  34 f5_bigip_pool_default_levels = (2, 1)
  35
  36
  37 def parse_f5_bigip_pool(info):
  38     parsed = {}
  39     processed_member_info = False
  40     for block in info:
  41         if not block:
  42             continue
  43
  44         # Member information
  45         if len(block[0]) == 3 and processed_member_info:
  46             break
  47
  48         if len(block[0]) == 3:
  49             for line in block:
  50                 parsed.setdefault(line[0], {"act_members": 0, "def_members": 0, "down_info": []})
  51                 parsed[line[0]]["act_members"] += int(line[1])
  52                 parsed[line[0]]["def_members"] += int(line[2])
  53             processed_member_info = True
  54
  55         # Status information
  56         elif len(block[0]) == 6:
  57             for key, val in parsed.iteritems():
  58                 for line in block:
  59                     if key == line[0]:
  60                         val["down_info"].append(line)
  61     return parsed
  62
  63
  64 def inventory_f5_bigip_pool(parsed):
  65     # inventorize all pools and their member count
  66     for item in parsed.keys():
  67         if item != "":
  68             yield item, "f5_bigip_pool_default_levels"
  69
  70
  71 def f5_bigip_pool_get_down_members(down_info):
  72     downs = []
  73     for line in down_info:
  74         if (line[2] != '4' or line[3] != '4' or line[4] in ('2', '3', '4', '5')):
  75             if re.match(r"\/\S*\/\S*", line[5]):
  76                 host = line[5].split("/")[2]
  77             else:
  78                 host = line[5]
  79             downs.append(host + ":" + line[1])
  80     return downs
  81
  82
  83 def check_f5_bigip_pool(item, params, parsed):
  84     warn, crit = params
  85
  86     pool_info = parsed.get(item)
  87     if not pool_info:
  88         return
  89
  90     pool_act_members = pool_info["act_members"]
  91     pool_def_members = pool_info["def_members"]
  92     message = "%d of %d members are up" % (pool_act_members, pool_def_members)
  93     state = 0
  94     if pool_act_members == pool_def_members or pool_act_members >= warn:
  95         state = 0
  96     elif pool_act_members < crit:
  97         state = 2
  98         message += " (warn/crit: %s/%s)" % (warn, crit)
  99     elif pool_act_members < warn:
 100         state = 1
 101         message += " (warn/crit: %s/%s)" % (warn, crit)
 102
 103     if pool_act_members < pool_def_members:
 104         downs = f5_bigip_pool_get_down_members(pool_info["down_info"])
 105         if downs:
 106             message += ", down/disabled nodes: %s" % ", ".join(downs)
 107     return state, message
 108
 109 check_info["f5_bigip_pool"] = {
 110     'parse_function'        : parse_f5_bigip_pool,
 111     'check_function'        : check_f5_bigip_pool,
 112     'group'                 : 'f5_pools',
 113     'inventory_function'    : inventory_f5_bigip_pool,
 114     'service_description'   : 'Load Balancing Pool %s',
 115     'snmp_info'             : [
 116             ('.1.3.6.1.4.1.3375.2.2.5.1.2.1', [
 117                     1, # ltmPoolEntry
 118                     8, # ltmPoolActiveMemberCnt
 119                     23, # ltmPoolMemberCnt
 120                 ]),
 121             ('.1.3.6.1.4.1.3375.2.2.5.3.2.1', [
 122                     1, # ltmPoolMemberPoolName
 123                     4, # ltmPoolMemberPort
 124                     10, # ltmPoolMemberMonitorState
 125                     11, # ltmPoolMemberMonitorStatus
 126                     13, # ltmPoolMemberSessionStatus
 127                     19, # ltmPoolMemberNodeName
 128                 ]),
 129         ],
 130     'snmp_scan_function':
 131      lambda oid: '.1.3.6.1.4.1.3375.2' in oid(".1.3.6.1.2.1.1.2.0") \
 132         and "big-ip" in oid(".1.3.6.1.4.1.3375.2.1.4.1.0").lower(),
 133 }