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https://github.com/netdata/netdata.git
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238 lines
7.6 KiB
Python
238 lines
7.6 KiB
Python
# -*- coding: utf-8 -*-
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# Description: bind rndc netdata python.d module
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# Author: l2isbad
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# SPDX-License-Identifier: GPL-3.0-or-later
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import os
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from collections import defaultdict
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from subprocess import Popen
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from bases.collection import find_binary
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from bases.FrameworkServices.SimpleService import SimpleService
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priority = 60000
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retries = 60
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update_every = 30
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ORDER = ['name_server_statistics', 'incoming_queries', 'outgoing_queries', 'named_stats_size']
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CHARTS = {
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'name_server_statistics': {
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'options': [None, 'Name Server Statistics', 'stats', 'name server statistics',
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'bind_rndc.name_server_statistics', 'line'],
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'lines': [
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['nms_requests', 'requests', 'incremental'],
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['nms_rejected_queries', 'rejected_queries', 'incremental'],
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['nms_success', 'success', 'incremental'],
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['nms_failure', 'failure', 'incremental'],
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['nms_responses', 'responses', 'incremental'],
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['nms_duplicate', 'duplicate', 'incremental'],
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['nms_recursion', 'recursion', 'incremental'],
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['nms_nxrrset', 'nxrrset', 'incremental'],
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['nms_nxdomain', 'nxdomain', 'incremental'],
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['nms_non_auth_answer', 'non_auth_answer', 'incremental'],
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['nms_auth_answer', 'auth_answer', 'incremental'],
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['nms_dropped_queries', 'dropped_queries', 'incremental'],
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]},
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'incoming_queries': {
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'options': [None, 'Incoming Queries', 'queries', 'incoming queries', 'bind_rndc.incoming_queries', 'line'],
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'lines': [
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]},
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'outgoing_queries': {
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'options': [None, 'Outgoing Queries', 'queries', 'outgoing queries', 'bind_rndc.outgoing_queries', 'line'],
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'lines': [
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]},
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'named_stats_size': {
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'options': [None, 'Named Stats File Size', 'MB', 'file size', 'bind_rndc.stats_size', 'line'],
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'lines': [
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['stats_size', None, 'absolute', 1, 1 << 20]
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]
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}
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}
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NMS = {
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'nms_requests': [
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'IPv4 requests received',
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'IPv6 requests received',
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'TCP requests received',
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'requests with EDNS(0) receive'
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],
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'nms_responses': [
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'responses sent',
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'truncated responses sent',
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'responses with EDNS(0) sent',
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'requests with unsupported EDNS version received'
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],
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'nms_failure': [
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'other query failures',
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'queries resulted in SERVFAIL'
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],
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'nms_auth_answer': ['queries resulted in authoritative answer'],
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'nms_non_auth_answer': ['queries resulted in non authoritative answer'],
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'nms_nxrrset': ['queries resulted in nxrrset'],
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'nms_success': ['queries resulted in successful answer'],
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'nms_nxdomain': ['queries resulted in NXDOMAIN'],
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'nms_recursion': ['queries caused recursion'],
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'nms_duplicate': ['duplicate queries received'],
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'nms_rejected_queries': [
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'auth queries rejected',
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'recursive queries rejected'
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],
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'nms_dropped_queries': ['queries dropped']
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}
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STATS = ['Name Server Statistics', 'Incoming Queries', 'Outgoing Queries']
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class Service(SimpleService):
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def __init__(self, configuration=None, name=None):
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SimpleService.__init__(self, configuration=configuration, name=name)
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self.order = ORDER
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self.definitions = CHARTS
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self.named_stats_path = self.configuration.get('named_stats_path', '/var/log/bind/named.stats')
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self.rndc = find_binary('rndc')
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self.data = dict(nms_requests=0, nms_responses=0, nms_failure=0, nms_auth=0,
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nms_non_auth=0, nms_nxrrset=0, nms_success=0, nms_nxdomain=0,
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nms_recursion=0, nms_duplicate=0, nms_rejected_queries=0,
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nms_dropped_queries=0)
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def check(self):
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if not self.rndc:
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self.error('Can\'t locate "rndc" binary or binary is not executable by netdata')
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return False
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if not (os.path.isfile(self.named_stats_path) and os.access(self.named_stats_path, os.R_OK)):
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self.error('Cannot access file %s' % self.named_stats_path)
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return False
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run_rndc = Popen([self.rndc, 'stats'], shell=False)
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run_rndc.wait()
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if not run_rndc.returncode:
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return True
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self.error('Not enough permissions to run "%s stats"' % self.rndc)
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return False
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def _get_raw_data(self):
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"""
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Run 'rndc stats' and read last dump from named.stats
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:return: dict
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"""
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result = dict()
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try:
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current_size = os.path.getsize(self.named_stats_path)
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run_rndc = Popen([self.rndc, 'stats'], shell=False)
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run_rndc.wait()
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if run_rndc.returncode:
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return None
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with open(self.named_stats_path) as named_stats:
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named_stats.seek(current_size)
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result['stats'] = named_stats.readlines()
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result['size'] = current_size
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return result
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except (OSError, IOError):
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return None
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def _get_data(self):
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"""
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Parse data from _get_raw_data()
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:return: dict
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"""
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raw_data = self._get_raw_data()
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if raw_data is None:
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return None
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parsed = dict()
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for stat in STATS:
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parsed[stat] = parse_stats(field=stat,
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named_stats=raw_data['stats'])
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self.data.update(nms_mapper(data=parsed['Name Server Statistics']))
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for elem in zip(['Incoming Queries', 'Outgoing Queries'], ['incoming_queries', 'outgoing_queries']):
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parsed_key, chart_name = elem[0], elem[1]
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for dimension_id, value in queries_mapper(data=parsed[parsed_key],
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add=chart_name[:9]).items():
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if dimension_id not in self.data:
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dimension = dimension_id.replace(chart_name[:9], '')
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if dimension_id not in self.charts[chart_name]:
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self.charts[chart_name].add_dimension([dimension_id, dimension, 'incremental'])
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self.data[dimension_id] = value
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self.data['stats_size'] = raw_data['size']
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return self.data
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def parse_stats(field, named_stats):
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"""
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:param field: str:
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:param named_stats: list:
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:return: dict
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Example:
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filed: 'Incoming Queries'
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names_stats (list of lines):
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++ Incoming Requests ++
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1405660 QUERY
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3 NOTIFY
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++ Incoming Queries ++
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1214961 A
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75 NS
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2 CNAME
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2897 SOA
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35544 PTR
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14 MX
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5822 TXT
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145974 AAAA
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371 SRV
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++ Outgoing Queries ++
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...
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result:
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{'A', 1214961, 'NS': 75, 'CNAME': 2, 'SOA': 2897, ...}
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"""
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data = dict()
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ns = iter(named_stats)
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for line in ns:
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if field not in line:
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continue
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while True:
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try:
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line = next(ns)
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except StopIteration:
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break
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if '++' not in line:
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if '[' in line:
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continue
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v, k = line.strip().split(' ', 1)
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data[k] = int(v)
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continue
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break
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break
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return data
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def nms_mapper(data):
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"""
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:param data: dict
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:return: dict(defaultdict)
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"""
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result = defaultdict(int)
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for k, v in NMS.items():
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for elem in v:
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result[k] += data.get(elem, 0)
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return result
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def queries_mapper(data, add):
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"""
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:param data: dict
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:param add: str
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:return: dict
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"""
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return dict([(add + k, v) for k, v in data.items()])
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