netdata/python.d/fail2ban.chart.py at master · pjz/netdata · GitHub

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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'])

netdata/python.d/fail2ban.chart.py at master · pjz/netdata · GitHub

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