checks/netctr

   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 linux_nic_check = "lnx_if"
  28
  29 # levels for warning/critical on error rate - in percentage of total packets!
  30 netctr_default_params = (0.01, 0.1)
  31
  32 netctr_counters = [
  33     'rx_bytes', 'tx_bytes', 'rx_packets', 'tx_packets', 'rx_errors', 'tx_errors', 'tx_collisions'
  34 ]
  35
  36 # Check counters from network interfaces
  37 # Item is devicename.countername, eg,
  38 # eth0.tx_collisions. Available are:
  39
  40 netctr_counter_indices = {
  41     # Receive
  42     'rx_bytes': 0,
  43     'rx_packets': 1,
  44     'rx_errors': 2,
  45     'rx_drop': 3,
  46     'rx_fifo': 4,
  47     'rx_frame': 5,
  48     'rx_compressed': 6,
  49     'rx_multicast': 7,
  50     # Transmit
  51     'tx_bytes': 8,
  52     'tx_packets': 9,
  53     'tx_errors': 10,
  54     'tx_drop': 11,
  55     'tx_fifo': 12,
  56     'tx_collisions': 13,
  57     'tx_carrier': 14,
  58     'tx_compressed': 15
  59 }
  60
  61
  62 def inventory_netctr_combined(info):
  63     if linux_nic_check != "legacy":
  64         return []
  65     if len(info) == 0:
  66         return []
  67     return [(l[0], '', 'netctr_default_params')
  68             for l in info[1:]
  69             if l[0] != 'lo' and not l[0].startswith("sit")]
  70
  71
  72 def check_netctr_combined(nic, params, info):
  73     try:
  74         warn, crit = params
  75     except:
  76         warn, crit = (0.01, 0.1)
  77
  78     this_time = int(info[0][0])
  79
  80     # Look for line describing this nic
  81     for nicline in info[1:]:
  82         if nicline[0] != nic:
  83             continue
  84         perfdata = []
  85         infotxt = ""
  86         problems_per_sec = 0.0
  87         packets_per_sec = 0.0
  88         for countername in netctr_counters:
  89             index = netctr_counter_indices[countername]
  90             value = int(nicline[index + 1])
  91             items_per_sec = get_rate("netctr." + nic + "." + countername, this_time, value)
  92             perfdata.append((countername, "%dc" % value))
  93
  94             if countername in ["rx_errors", "tx_errors", "tx_collisions"]:
  95                 problems_per_sec += items_per_sec
  96             elif countername in ["rx_packets", "tx_packets"]:
  97                 packets_per_sec += items_per_sec
  98             if countername == 'rx_bytes':
  99                 infotxt += ' - Receive: %.2f MB/sec' % (float(items_per_sec) / float(1024 * 1024))
 100             elif countername == 'tx_bytes':
 101                 infotxt += ' - Send: %.2f MB/sec' % (float(items_per_sec) / float(1024 * 1024))
 102
 103         error_percentage = 0.0
 104         if problems_per_sec > 0:
 105             error_percentage = (problems_per_sec / packets_per_sec) * 100.0
 106             infotxt += ", error rate %.4f%%" % error_percentage
 107         if error_percentage >= crit:
 108             return (2, infotxt, perfdata)
 109         elif error_percentage >= warn:
 110             return (1, infotxt, perfdata)
 111         return (0, infotxt, perfdata)
 112
 113     return (3, "NIC is not present")
 114
 115
 116 check_config_variables.append("netctr_counters")
 117
 118 check_info["netctr.combined"] = {
 119     'check_function': check_netctr_combined,
 120     'inventory_function': inventory_netctr_combined,
 121     'service_description': 'NIC %s counters',
 122     'has_perfdata': True,
 123 }