checks/k8s_pods_cm

   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 from cmk.special_agents.agent_kubernetes import parse_frac_prefix
  28
  29
  30 def parse_mul_prefix(value):
  31     # type: (str) -> int
  32     if value.endswith('k'):
  33         return 1000 * int(value[:-1])
  34     return int(value)
  35
  36
  37 @get_parsed_item_data
  38 def check_k8s_pods_memory(item, _no_params, metrics):
  39
  40     rss = 0
  41     swap = 0
  42     usage_bytes = 0
  43     max_usage_bytes = 0
  44
  45     for pod_data in metrics:
  46         rss += parse_mul_prefix(pod_data['metrics']['memory_rss'])
  47         swap += parse_mul_prefix(pod_data['metrics']['memory_swap'])
  48         usage_bytes += parse_mul_prefix(pod_data['metrics']['memory_usage_bytes'])
  49         max_usage_bytes += parse_mul_prefix(pod_data['metrics']['memory_max_usage_bytes'])
  50
  51     yield check_levels(rss, 'rss', _no_params, human_readable_func=get_bytes_human_readable)
  52     yield check_levels(swap, 'swap', _no_params, human_readable_func=get_bytes_human_readable)
  53     yield check_levels(
  54         usage_bytes, 'usage_bytes', _no_params, human_readable_func=get_bytes_human_readable)
  55     yield check_levels(
  56         max_usage_bytes,
  57         'max_usage_bytes',
  58         _no_params,
  59         human_readable_func=get_bytes_human_readable)
  60
  61
  62 check_info['k8s_pods_memory'] = {
  63     'parse_function': parse_k8s,
  64     'inventory_function': discover(),
  65     'check_function': check_k8s_pods_memory,
  66     'service_description': 'Memory usage for Pods in %s namespace',
  67     'includes': ['k8s.include'],
  68 }
  69
  70
  71 @get_parsed_item_data
  72 def check_k8s_pods_cpu(item, _no_params, metrics):
  73
  74     system = 0
  75     user = 0
  76     usage = 0
  77
  78     for pod_data in metrics:
  79         system += parse_frac_prefix(pod_data['metrics']['cpu_system'])
  80         user += parse_frac_prefix(pod_data['metrics']['cpu_user'])
  81         usage += parse_frac_prefix(pod_data['metrics']['cpu_usage'])
  82
  83     yield check_levels(system, 'system', _no_params)
  84     yield check_levels(user, 'user', _no_params)
  85     yield check_levels(usage, 'usage', _no_params)
  86
  87
  88 check_info['k8s_pods_cpu'] = {
  89     'parse_function': parse_k8s,
  90     'inventory_function': discover(),
  91     'check_function': check_k8s_pods_cpu,
  92     'service_description': 'CPU usage for Pods in %s namespace',
  93     'includes': ['k8s.include'],
  94 }
  95
  96
  97 @get_parsed_item_data
  98 def check_k8s_pods_fs(item, _no_params, metrics):
  99
 100     inodes = 0
 101     reads = 0
 102     writes = 0
 103     limit_bytes = 0
 104     usage_bytes = 0
 105
 106     for pod_data in metrics:
 107         inodes += parse_frac_prefix(pod_data['metrics']['fs_inodes'])
 108         reads += parse_frac_prefix(pod_data['metrics']['fs_reads'])
 109         writes += parse_frac_prefix(pod_data['metrics']['fs_writes'])
 110         limit_bytes += parse_mul_prefix(pod_data['metrics']['fs_limit_bytes'])
 111         usage_bytes += parse_mul_prefix(pod_data['metrics']['fs_usage_bytes'])
 112
 113     yield check_levels(inodes, 'inodes', _no_params)
 114     yield check_levels(reads, 'reads', _no_params)
 115     yield check_levels(writes, 'writes', _no_params)
 116     yield check_levels(
 117         limit_bytes, 'limit_bytes', _no_params, human_readable_func=get_bytes_human_readable)
 118     yield check_levels(
 119         usage_bytes, 'usage_bytes', _no_params, human_readable_func=get_bytes_human_readable)
 120
 121
 122 check_info['k8s_pods_fs'] = {
 123     'parse_function': parse_k8s,
 124     'inventory_function': discover(),
 125     'check_function': check_k8s_pods_fs,
 126     'service_description': 'FS usage for Pods in %s namespace',
 127     'includes': ['k8s.include'],
 128 }