checks/pvecm_nodes

   1 #!/usr/bin/python
   2 # -*- encoding: utf-8; py-indent-offset: 4 -*-
   3 # +------------------------------------------------------------------+
   4 # |             ____ _               _        __  __ _  __           |
   5 # |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   6 # |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   7 # |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   8 # |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   9 # |                                                                  |
  10 # | Copyright Mathias Kettner 2016             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 # Version 2
  28 # healthy if all nodes are reachable (at discovery)
  29 # <<<pvecm_nodes>>>
  30 # Node Sts Inc Joined Name
  31 # 1 M 35960 2016-01-20 13:17:24 BAR-host002
  32 # 2 M 36020 2016-01-20 13:30:18 FOO-host001
  33 # 3 M 35960 2016-01-20 13:17:24 FOO-host003
  34 # 4 M 35964 2016-01-20 13:17:24 FOO-host004
  35 # 5 M 35764 2016-01-20 12:59:03 FOO-host002
  36 # 6 M 36032 2016-01-20 13:34:27 BAR-host003
  37 # 7 M 35960 2016-01-20 13:17:24 BAR-host001
  38
  39 # faulty because some nodes are missing
  40 # <<<pvecm_nodes>>>
  41 # Node Sts Inc Joined Name
  42 # 1 M 35960 2016-01-20 13:17:24 BAR-host002
  43 # 2 M 36020 2016-01-20 13:30:18 FOO-host001
  44 # 4 M 35964 2016-01-20 13:17:24 FOO-host004
  45 # 6 M 36032 2016-01-20 13:34:27 BAR-host003
  46 # 7 M 35960 2016-01-20 13:17:24 BAR-host001
  47
  48 # faulty communication between nodes
  49 # <<<pvecm_nodes>>>
  50 # Node Sts Inc Joined Name
  51 # 1 M 35960 2016-01-20 13:17:24 BAR-host002
  52 # 2 M 36020 FOO-host001
  53 # 3 M 35960 2016-01-20 13:17:24 FOO-host003
  54 # 4 M 35964 2016-01-20 13:17:24 FOO-host004
  55 # 5 M 35764 FOO-host002
  56 # 6 M 36032 BAR-host003
  57 # 7 M 35960 2016-01-20 13:17:24 BAR-host001
  58
  59 # Version >2
  60 # <<<pvecm_nodes>>>
  61 #
  62 # Membership information
  63 # ~~~~~~~~~~~~~~~~~~~~~~
  64 #     Nodeid      Votes Name
  65 #          1          1 hp1 (local)
  66 #          2          1 hp2
  67 #          3          1 hp3
  68 #          4          1 hp4
  69
  70
  71 def parse_pvecm_nodes(info):
  72     parsed = {}
  73     header = None
  74     for line in info:
  75         if line == ["Node", "Sts", "Inc", "Joined", "Name"]:
  76             header = ["node_id", "status", "joined", "name"]
  77             parse_func = _parse_version_eq_2
  78             continue
  79
  80         elif line == ["Nodeid", "Votes", "Name"]:
  81             header = ["node_id", "votes", "name"]
  82             parse_func = _parse_version_gt_2
  83             continue
  84
  85         if header is None:
  86             continue
  87
  88         k, v = parse_func(line, header)
  89         parsed.setdefault(k, v)
  90     return parsed
  91
  92
  93 def _parse_version_eq_2(line, header):
  94     if len(line) == 6:
  95         data = dict(zip(header[:3], line[:2] + [" ".join(line[3:5])]))
  96     else:
  97         data = dict(zip(["node_id", "status"], line[:2]))
  98     return line[-1], data
  99
 100
 101 def _parse_version_gt_2(line, header):
 102     return " ".join(line[2:]), dict(zip(header[:2], line[:2]))
 103
 104
 105 def inventory_pvecm_nodes(parsed):
 106     for name in parsed:
 107         yield name, None
 108
 109
 110 def check_pvecm_nodes(item, _no_params, parsed):
 111     if item not in parsed:
 112         return 2, "Node is missing"
 113
 114     map_states = {
 115         "m": (0, "member of the cluster"),
 116         "x": (1, "not a member of the cluster"),
 117         "d": (2, "known to the cluster but disallowed access to it"),
 118     }
 119     data = parsed[item]
 120     infotexts = ["ID: %s" % data["node_id"]]
 121     state = 0
 122     if "status" in data:
 123         state, state_readable = map_states[data["status"].lower()]
 124         infotexts.append("Status: %s" % state_readable)
 125     if "joined" in data:
 126         infotexts.append("Joined: %s" % data["joined"])
 127     if "votes" in data:
 128         infotexts.append("Votes: %s" % data["votes"])
 129     return state, ", ".join(infotexts)
 130
 131
 132 check_info['pvecm_nodes'] = {
 133     'parse_function': parse_pvecm_nodes,
 134     'inventory_function': inventory_pvecm_nodes,
 135     'check_function': check_pvecm_nodes,
 136     'service_description': 'PVE Node %s',
 137 }