# Getting GEO information from Nginx access.log by IP's. # Alexey Nizhegolenko 2018 # Parts added by Remko Lodder, 2019. # Added: IPv6 matching, make query based on geoip2 instead of # geoip, which is going away r.s.n. # Added possibility of processing more than one Nginx log file, # by adding threading support. 2022 July by Alexey Nizhegolenko import os import re import sys import time import geohash import logging import logging.handlers import geoip2.database import configparser from influxdb import InfluxDBClient from influxdb_client import InfluxDBClient as InfluxDBClient2 from influxdb_client.client.write_api import SYNCHRONOUS from IPy import IP as ipadd import threading class SyslogBOMFormatter(logging.Formatter): def format(self, record): result = super().format(record) return "ufeff" + result handler = logging.handlers.SysLogHandler('/dev/log') formatter = SyslogBOMFormatter(logging.BASIC_FORMAT) handler.setFormatter(formatter) root = logging.getLogger(__name__) root.setLevel(os.environ.get("LOGLEVEL", "INFO")) root.addHandler(handler) def logparse(LOGPATH, WEBSITE, MEASUREMENT, GEOIPDB, INODE, INFLUXDB_VERSION, INFLUXHOST=None, INFLUXPORT=None, URL=None, INFLUXDBDB=None, INFLUXUSER=None, INFLUXUSERPASS=None, INFLUXDBTOKEN=None, INFLUXDBBUCKET=None, INFLUXDBORG=None): # NOQA # Preparing variables and params IPS = {} COUNT = {} GEOHASH = {} HOSTNAME = os.uname()[1] if INFLUXDB_VERSION == "1": CLIENT = InfluxDBClient(host=INFLUXHOST, port=INFLUXPORT, username=INFLUXUSER, password=INFLUXUSERPASS, database=INFLUXDBDB) # NOQA elif INFLUXDB_VERSION == "2": CLIENT = InfluxDBClient(url=URL, token=INFLUXDBTOKEN, org=INFLUXDBORG) # NOQA re_IPV4 = re.compile('(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})') re_IPV6 = re.compile('(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))') # NOQA GI = geoip2.database.Reader(GEOIPDB) # Main loop that parses log file in tailf style with sending metrics out with open(LOGPATH, "r") as FILE: STR_RESULTS = os.stat(LOGPATH) ST_SIZE = STR_RESULTS[6] FILE.seek(ST_SIZE) while True: METRICS = [] WHERE = FILE.tell() LINE = FILE.readline() INODENEW = os.stat(LOGPATH).st_ino if INODE != INODENEW: return if not LINE: time.sleep(1) FILE.seek(WHERE) else: if re_IPV4.match(LINE): m = re_IPV4.match(LINE) IP = m.group(1) elif re_IPV6.match(LINE): m = re_IPV6.match(LINE) IP = m.group(1) if ipadd(IP).iptype() == 'PUBLIC' and IP: INFO = GI.city(IP) if INFO is not None: HASH = geohash.encode(INFO.location.latitude, INFO.location.longitude) # NOQA COUNT['count'] = 1 GEOHASH['geohash'] = HASH GEOHASH['host'] = HOSTNAME GEOHASH['website'] = WEBSITE GEOHASH['country_code'] = INFO.country.iso_code GEOHASH['country_name'] = INFO.country.name GEOHASH['city_name'] = INFO.city.name IPS['tags'] = GEOHASH IPS['fields'] = COUNT IPS['measurement'] = MEASUREMENT METRICS.append(IPS) # Sending json data itto InfluxDB try: if INFLUXDB_VERSION == "1": CLIENT.write_points(METRICS) elif INFLUXDB_VERSION == "2": write_api = CLIENT.write_api(write_options=SYNCHRONOUS) # NOQA write_api.write(INFLUXDBBUCKET, INFLUXDBORG, record=METRICS) # NOQA except Exception: logging.exception("Cannot establish connection with InfluxDB server: ") # NOQA def main(): # Preparing for reading the config file PWD = os.path.abspath(os.path.dirname(os.path.realpath(__file__))) CONFIG = configparser.ConfigParser() CONFIG.read(f'{PWD}/settings.ini') # Get the InfluxDB version so we can parse only needed part of config INFLUXDB_VERSION = CONFIG.get('INFLUXDB_VERSION', 'version') if INFLUXDB_VERSION == "1": # Getting params from config for version 1 GEOIPDB = CONFIG.get('GEOIP', 'geoipdb') LOGPATH = CONFIG.get('NGINX_LOGS', 'logpath').split() INFLUXHOST = CONFIG.get('INFLUXDB1', 'host') INFLUXPORT = CONFIG.get('INFLUXDB1', 'port') INFLUXDBDB = CONFIG.get('INFLUXDB1', 'database') INFLUXUSER = CONFIG.get('INFLUXDB1', 'username') MEASUREMENT = CONFIG.get('INFLUXDB1', 'measurement') INFLUXUSERPASS = CONFIG.get('INFLUXDB1', 'password') elif INFLUXDB_VERSION == "2": # Getting params from config for version 2 GEOIPDB = CONFIG.get('GEOIP', 'geoipdb') LOGPATH = CONFIG.get('NGINX_LOGS', 'logpath').split() URL = CONFIG.get('INFLUXDB2', 'url') INFLUXDBTOKEN = CONFIG.get('INFLUXDB2', 'token') INFLUXDBBUCKET = CONFIG.get('INFLUXDB2', 'bucket') MEASUREMENT = CONFIG.get('INFLUXDB2', 'measurement') INFLUXDBORG = CONFIG.get('INFLUXDB2', 'organization') # Parsing log file and sending metrics to Influxdb while True: logs = [] thread_names = [] for logitem in LOGPATH: logs.append(logitem.split(":")) for website, log in logs: # Get inode from log file if os.path.exists(log): INODE = os.stat(log).st_ino else: logging.info('Nginx log file %s not found', log) print('Nginx log file %s not found' % log) return if INFLUXDB_VERSION == "1": # Run the main loop and grep data in separate threads t = website if os.path.exists(log): t = threading.Thread(target=logparse, args=[log, website, INFLUXDB_VERSION, INFLUXHOST, INFLUXPORT, INFLUXDBDB, INFLUXUSER, INFLUXUSERPASS, MEASUREMENT, GEOIPDB, INODE], daemon=True, name=website) # NOQA for thread in threading.enumerate(): thread_names.append(thread.name) if website not in thread_names: t.start() else: logging.info('Nginx log file %s not found', log) print('Nginx log file %s not found' % log) elif INFLUXDB_VERSION == "2": # Run the main loop and grep data in separate threads t = website if os.path.exists(log): t = threading.Thread(target=logparse, args=[log, website, INFLUXDB_VERSION, URL, INFLUXDBTOKEN, INFLUXDBBUCKET, INFLUXDBORG, MEASUREMENT, GEOIPDB, INODE], daemon=True, name=website) # NOQA for thread in threading.enumerate(): thread_names.append(thread.name) if website not in thread_names: t.start() else: logging.info('Nginx log file %s not found', log) print('Nginx log file %s not found' % log) if __name__ == '__main__': try: main() except Exception: logging.exception("Exception in main(): ") except KeyboardInterrupt: logging.exception("Exception KeyboardInterrupt: ") sys.exit(0)