checks/tcp_conn_stats

   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 # <<<tcp_conn_stats>>>
  28 # 01 29
  29 # 02 3
  30 # 0A 26
  31 # 05 1
  32 # 06 187
  33
  34 # <<<tcp_conn_stats>>>
  35 # LISTEN 39
  36 # IDLE 3
  37 # TIME_WAIT 1
  38 # ESTABLISHED 68
  39 # BOUND 1
  40
  41
  42 def parse_tcp_conn_stats(info):
  43     map_counter_keys = {
  44         1: "ESTABLISHED",  # connection up and passing data
  45         2: "SYN_SENT",  # session has been requested by us; waiting for reply from remote endpoint
  46         3: "SYN_RECV",  # session has been requested by a remote endpoint for a socket on which we were listening
  47         4: "FIN_WAIT1",  # our socket has closed; we are in the process of tearing down the connection
  48         5: "FIN_WAIT2",  # the connection has been closed; our socket is waiting for the remote endpoint to shut down
  49         6: "TIME_WAIT",  # socket is waiting after closing for any packets left on the network
  50         7: "CLOSED",  # socket is not being used (FIXME. What does mean?)
  51         8: "CLOSE_WAIT",  # remote endpoint has shut down; the kernel is waiting for the application to close the socket
  52         9: "LAST_ACK",  # our socket is closed; remote endpoint has also shut down; we are waiting for a final acknowledgement
  53         10: "LISTEN",  # represents waiting for a connection request from any remote TCP and port
  54         11: "CLOSING",  # our socket is shut down; remote endpoint is shut down; not all data has been sent
  55     }
  56
  57     parsed = {}
  58     for line in info:
  59         tcp_state = line[0]
  60         if len(tcp_state) == 2:
  61             tcp_state = map_counter_keys.get(int(tcp_state, 16))  # Hex
  62         if tcp_state is None:
  63             continue
  64         try:
  65             parsed[tcp_state] = int(line[1])
  66         except ValueError:
  67             pass
  68     return parsed
  69
  70
  71 check_info["tcp_conn_stats"] = {
  72     'parse_function': parse_tcp_conn_stats,
  73     'inventory_function': inventory_tcp_connections,
  74     'check_function': check_tcp_connections,
  75     'service_description': 'TCP Connections',
  76     'has_perfdata': True,
  77     'group': 'tcp_conn_stats',
  78     'includes': ["tcp_connections.include"],
  79 }