checks/docker_node_info

   1 #!/usr/bin/python
   2 # -*- encoding: utf-8; py-indent-offset: 4 -*-
   3 # +------------------------------------------------------------------+
   4 # |             ____ _               _        __  __ _  __           |
   5 # |            / ___| |__   ___  ___| | __   |  \/  | |/ /           |
   6 # |           | |   | '_ \ / _ \/ __| |/ /   | |\/| | ' /            |
   7 # |           | |___| | | |  __/ (__|   <    | |  | | . \            |
   8 # |            \____|_| |_|\___|\___|_|\_\___|_|  |_|_|\_\           |
   9 # |                                                                  |
  10 # | Copyright Mathias Kettner 2018             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
  28 def inventory_docker_node_info(parsed):
  29     if parsed and isinstance(parsed, dict):
  30         return [(None, {})]
  31
  32
  33 def check_docker_node_info(item, params, parsed):
  34     if isinstance(parsed, dict):
  35         # TODO use other infos from this section?
  36         return 0, 'Daemon running on host %s' % parsed["Name"]
  37
  38     return 2, parsed
  39
  40
  41 check_info['docker_node_info'] = {
  42     'includes': ['docker.include'],
  43     'parse_function': parse_docker_node_info,
  44     'inventory_function': inventory_docker_node_info,
  45     'check_function': check_docker_node_info,
  46     'service_description': 'Docker node info',
  47 }
  48
  49
  50 def inventory_docker_node_containers(parsed):
  51     if parsed and isinstance(parsed, dict):
  52         return [(None, {})]
  53
  54
  55 def check_docker_node_containers(item, params, parsed):
  56     if not isinstance(parsed, dict):
  57         # String with error message in case the daemon is not running
  58         return
  59
  60     def check_node_levels(count, warn, crit, warn_lower, crit_lower):
  61         if crit is not None and count >= crit:
  62             return 2, " (warn/crit at %s/%s)" % (warn, crit)
  63         if crit_lower is not None and count < crit_lower:
  64             return 2, " (warn/crit below %s/%s)" % (warn_lower, crit_lower)
  65         if warn is not None and count >= warn:
  66             return 1, " (warn/crit at %s/%s)" % (warn, crit)
  67         if warn_lower is not None and count < warn_lower:
  68             return 1, " (warn/crit below %s/%s)" % (warn_lower, crit_lower)
  69         return 0, ""
  70
  71     for title, key, upper_name, lower_name in (
  72         ("containers", "Containers", 'upper_levels', 'lower_levels'),
  73         ("running", "ContainersRunning", 'running_upper_levels', 'running_lower_levels'),
  74         ("paused", "ContainersPaused", 'paused_upper_levels', 'paused_lower_levels'),
  75         ("stopped", "ContainersStopped", 'stopped_upper_levels', 'stopped_lower_levels'),
  76     ):
  77         raw_count = parsed.get(key)
  78         if raw_count is None:
  79             yield 3, "%s: count not present in agent output" % title
  80             continue
  81         count = int(raw_count)
  82
  83         warn, crit = params.get(upper_name, (None, None))
  84         lower_warn, lower_crit = params.get(lower_name, (None, None))
  85
  86         status, level_text = check_node_levels(count, warn, crit, lower_warn, lower_crit)
  87         infotext = "%s: %d" % (title, count)
  88         if level_text:
  89             infotext += level_text
  90         perfdata = [(title.lower(), count, warn, crit, lower_warn, lower_crit)]
  91
  92         yield status, infotext, perfdata
  93
  94
  95 check_info["docker_node_info.containers"] = {
  96     "inventory_function": inventory_docker_node_containers,
  97     "check_function": check_docker_node_containers,
  98     "service_description": "Docker containers",
  99     "has_perfdata": True,
 100     "group": "docker_node_containers",
 101 }