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-rw-r--r--python.d/fail2ban.chart.py91
1 files changed, 91 insertions, 0 deletions
diff --git a/python.d/fail2ban.chart.py b/python.d/fail2ban.chart.py
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+++ b/python.d/fail2ban.chart.py
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+# -*- coding: utf-8 -*-
+# Description: fail2ban log netdata python.d module
+# Author: l2isbad
+
+from base import LogService
+from re import compile
+try:
+ from itertools import filterfalse
+except ImportError:
+ from itertools import ifilterfalse as filterfalse
+from os import access as is_accessible, R_OK
+
+priority = 60000
+retries = 60
+regex = compile(r'([A-Za-z-]+\]) enabled = ([a-z]+)')
+
+ORDER = ['jails_group']
+
+
+class Service(LogService):
+ def __init__(self, configuration=None, name=None):
+ LogService.__init__(self, configuration=configuration, name=name)
+ self.order = ORDER
+ self.log_path = self.configuration.get('log_path', '/var/log/fail2ban.log')
+ self.conf_path = self.configuration.get('conf_path', '/etc/fail2ban/jail.local')
+ self.default_jails = ['ssh']
+ try:
+ self.exclude = self.configuration['exclude'].split()
+ except (KeyError, AttributeError):
+ self.exclude = []
+
+
+ def _get_data(self):
+ """
+ Parse new log lines
+ :return: dict
+ """
+
+ # If _get_raw_data returns empty list (no new lines in log file) we will send to Netdata this
+ self.data = {jail: 0 for jail in self.jails_list}
+
+ try:
+ raw = self._get_raw_data()
+ if raw is None:
+ return None
+ elif not raw:
+ return self.data
+ except (ValueError, AttributeError):
+ return None
+
+ # Fail2ban logs looks like
+ # 2016-12-25 12:36:04,711 fail2ban.actions[2455]: WARNING [ssh] Ban 178.156.32.231
+ self.data = dict(
+ zip(
+ self.jails_list,
+ [len(list(filterfalse(lambda line: (jail + '] Ban') not in line, raw))) for jail in self.jails_list]
+ ))
+
+ return self.data
+
+ def check(self):
+
+ # Check "log_path" is accessible.
+ # If NOT STOP plugin
+ if not is_accessible(self.log_path, R_OK):
+ self.error('Cannot access file %s' % (self.log_path))
+ return False
+
+ # Check "conf_path" is accessible.
+ # If "conf_path" is accesible try to parse it to find enabled jails
+ if is_accessible(self.conf_path, R_OK):
+ with open(self.conf_path, 'rt') as jails_conf:
+ jails_list = regex.findall(' '.join(jails_conf.read().split()))
+ self.jails_list = [jail[:-1] for jail, status in jails_list if status == 'true']
+ else:
+ self.jails_list = []
+ self.error('Cannot access jail.local file %s.' % (self.conf_path))
+
+ # If for some reason parse failed we still can START with default jails_list.
+ self.jails_list = [jail for jail in self.jails_list if jail not in self.exclude]\
+ if self.jails_list else self.default_jails
+ self.create_dimensions()
+ self.info('Plugin succefully started. Jails: %s' % (self.jails_list))
+ return True
+
+ def create_dimensions(self):
+ self.definitions = {'jails_group':
+ {'options':
+ [None, "Jails ban statistics", "bans/s", 'Jails', 'jail.ban', 'line'], 'lines': []}}
+ for jail in self.jails_list:
+ self.definitions['jails_group']['lines'].append([jail, jail, 'absolute'])