Created
September 16, 2010 23:27
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# NginxStats | |
# python nginxstats.py --servers="http://meuservido.com.br/nginx_status" --time=5 | |
import os, sys, atexit, getopt | |
import re | |
import sys | |
import time | |
import urllib | |
class NginxStats(): | |
def __init__(self, servers, time): | |
self.servers = servers | |
self.prev = {'accepted':0, 'requests':0} | |
self.total = {'connections':0, 'accepted':0, 'requests':0, 'reading':0, 'writing':0, 'waiting':0} | |
self.count = 0 | |
self.TIME_SLEEP = time | |
def parse(self, content): | |
result = {} | |
match1 = re.search(r'Active connections:\s+(\d+)', content) | |
match2 = re.search(r'\s*(\d+)\s+(\d+)\s+(\d+)', content) | |
match3 = re.search(r'Reading:\s*(\d+)\s*Writing:\s*(\d+)\s*' | |
'Waiting:\s*(\d+)', content) | |
if not match1 or not match2 or not match3: | |
raise Exception('Unable to parse %s' % content) | |
result['connections'] = int(match1.group(1)) | |
result['accepted'] = int(match2.group(1)) | |
result['requests'] = int(match2.group(3)) | |
result['reading'] = int(match3.group(1)) | |
result['writing'] = int(match3.group(2)) | |
result['waiting'] = int(match3.group(3)) | |
return result | |
def get_stats(self): | |
stats = {'connections':0, 'accepted':0, 'requests':0, 'reading':0, 'writing':0, 'waiting':0} | |
for server in self.servers: | |
data = urllib.urlopen(server) | |
content = data.read() | |
result = self.parse(content) | |
for k,v in result.iteritems(): stats[k] += v | |
return stats | |
def loop(self): | |
self.print_header() | |
self.prev = self.get_stats() | |
time.sleep(self.TIME_SLEEP) | |
try: | |
while True: | |
nginx_stats = self.get_stats() | |
self.print_stats(nginx_stats) | |
self.prev = nginx_stats | |
for k,v in self.total.iteritems(): self.total[k] += nginx_stats[k] | |
self.count += 1 | |
time.sleep(self.TIME_SLEEP) | |
except KeyboardInterrupt: | |
self.print_footer() | |
def print_stats(self, stats): | |
print '%8d %10.2f %10.2f %5d %5d %5d' % (stats['connections'], | |
float(stats['accepted'] - self.prev['accepted']) / self.TIME_SLEEP, | |
float(stats['requests'] - self.prev['requests']) / self.TIME_SLEEP, | |
stats['reading'], | |
stats['writing'], | |
stats['waiting']) | |
def print_footer(self): | |
print '-------- ---------- ---------- ----- ----- -----' | |
print '%8d %10.2f %10.2f %5d %5d %5d' % tuple([v / self.count for k,v in self.total.iteritems()]) | |
def print_header(self): | |
print '%-8s %-10s %-10s %-5s %-5s %-5s' % ('Conn', 'Conn/s', 'Request/s', 'Read', 'Write', 'Wait') | |
print '-------- ---------- ---------- ----- ----- -----' | |
def usage(): | |
print "\nNginx Stats Monitor:" | |
print "usage: nginxstats.py [--servers=HOST1,HOST2] [--time=TIME_SLEEP] [--help]" | |
def main(): | |
try: | |
optlists, command = getopt.getopt(sys.argv[1:], "hst", ["help", "servers=", "time="]) | |
except getopt.GetoptError, err: | |
print str(err) # will print something like "option -a not recognized" | |
usage() | |
sys.exit(2) | |
servers = [] | |
time = 5 | |
for opt, value in optlists: | |
if opt in ("-h", "--help"): | |
usage() | |
sys.exit() | |
elif opt in ("-s", "--servers"): | |
servers = [s.strip() for s in value.split(",")] | |
elif opt in ("-t", "--time"): | |
time = int(value) | |
nStats = NginxStats(servers, time) | |
nStats.loop() | |
if __name__ == "__main__": | |
main() |
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If you're using Python 3.6, you'll need to use this version instead :