为什么uWSGI的工人停止响应SIGHUP？

import time import os import signal import threading import datetime import uwsgi to_be_killed = {} def print_still_alive(): now = time.time() still_alive_pids = set(w['pid'] for w in uwsgi.workers() if w['pid'] > 0) print datetime.datetime.now(), ('STILL ALIVE: %r' % {k: int(now - v) for k, v in to_be_killed.iteritems() if k in still_alive_pids}) class PeriodicTimer(threading._Timer): def run(self): while not self.finished.is_set(): self.finished.wait(self.interval) if not self.finished.is_set(): self.function(*self.args, **self.kwargs) def cycle(): print_still_alive() for w in uwsgi.workers(): if w['pid'] <= 0: continue pid = w['pid'] to_be_killed.setdefault(pid, time.time()) os.kill(pid, signal.SIGHUP) print datetime.datetime.now(), 'Sent HUP to %s' % pid if uwsgi.masterpid() == os.getpid(): timer = PeriodicTimer(5, cycle, ()) timer.setDaemon(True) timer.start() def application(env, start_response): start_response('200 OK', [('Content-Type', 'text/html')]) return ['Hello World %s: %s' % (os.getpid(), time.time())]

$ uwsgi --http :8003 --wsgi simple_th:application --honour-stdin --master --workers 5 --py-auto-reload=1 --enable-threads *** Starting uWSGI 2.0.8 (64bit) on [Wed Nov 19 15:43:35 2014] *** compiled with version: 4.8.2 on 14 November 2014 19:44:37 os: Linux-3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 nodename: dmugtasimov-ThinkPad-T520 machine: x86_64 clock source: unix detected number of CPU cores: 4 current working directory: /home/dmugtasimov/gitrep/apigateway/tmp detected binary path: /home/dmugtasimov/gitrep/apigateway/ENV/bin/uwsgi !!! no internal routing support, rebuild with pcre support !!! your processes number limit is 63268 your memory page size is 4096 bytes detected max file descriptor number: 1024 lock engine: pthread robust mutexes thunder lock: disabled (you can enable it with --thunder-lock) uWSGI http bound on :8003 fd 4 uwsgi socket 0 bound to TCP address 127.0.0.1:36063 (port auto-assigned) fd 3 Python version: 2.7.6 (default, Mar 22 2014, 23:03:41) [GCC 4.8.2] Python main interpreter initialized at 0x1f0f350 python threads support enabled your server socket listen backlog is limited to 100 connections your mercy for graceful operations on workers is 60 seconds mapped 436608 bytes (426 KB) for 5 cores *** Operational MODE: preforking *** WSGI app 0 (mountpoint='') ready in 0 seconds on interpreter 0x1f0f350 pid: 21265 (default app) *** uWSGI is running in multiple interpreter mode *** spawned uWSGI master process (pid: 21265) spawned uWSGI worker 1 (pid: 21267, cores: 1) spawned uWSGI worker 2 (pid: 21268, cores: 1) spawned uWSGI worker 3 (pid: 21269, cores: 1) spawned uWSGI worker 4 (pid: 21270, cores: 1) spawned uWSGI worker 5 (pid: 21271, cores: 1) spawned uWSGI http 1 (pid: 21272) Python auto-reloader enabled 2014-11-19 15:43:40.553574 STILL ALIVE: {} 2014-11-19 15:43:40.554045 Sent HUP to 21267 Gracefully killing worker 1 (pid: 21267)... 2014-11-19 15:43:40.554127 Sent HUP to 21268 Gracefully killing worker 2 (pid: 21268)... Gracefully killing worker 3 (pid: 21269)... 2014-11-19 15:43:40.555841 Sent HUP to 21269 2014-11-19 15:43:40.555936 Sent HUP to 21270 Gracefully killing worker 5 (pid: 21271)... Gracefully killing worker 4 (pid: 21270)... 2014-11-19 15:43:40.560523 Sent HUP to 21271 Respawned uWSGI worker 1 (new pid: 21281) Respawned uWSGI worker 2 (new pid: 21282) Respawned uWSGI worker 3 (new pid: 21283) Respawned uWSGI worker 4 (new pid: 21284) Respawned uWSGI worker 5 (new pid: 21285) Python auto-reloader enabled 2014-11-19 15:43:45.561159 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21281)... 2014-11-19 15:43:45.561491 Sent HUP to 21281 Gracefully killing worker 2 (pid: 21282)... 2014-11-19 15:43:45.562548 Sent HUP to 21282 Gracefully killing worker 3 (pid: 21283)... 2014-11-19 15:43:45.562621 Sent HUP to 21283 2014-11-19 15:43:45.562665 Sent HUP to 21284 Gracefully killing worker 5 (pid: 21285)... Gracefully killing worker 4 (pid: 21284)... 2014-11-19 15:43:45.569720 Sent HUP to 21285 Respawned uWSGI worker 1 (new pid: 21292) Respawned uWSGI worker 2 (new pid: 21293) Respawned uWSGI worker 3 (new pid: 21294) Respawned uWSGI worker 4 (new pid: 21295) Respawned uWSGI worker 5 (new pid: 21296) Python auto-reloader enabled 2014-11-19 15:43:50.570273 STILL ALIVE: {} 2014-11-19 15:43:50.570476 Sent HUP to 21292 Gracefully killing worker 1 (pid: 21292)... 2014-11-19 15:43:50.570516 Sent HUP to 21293 Gracefully killing worker 2 (pid: 21293)... 2014-11-19 15:43:50.570572 Sent HUP to 21294 2014-11-19 15:43:50.570622 Sent HUP to 21295 Gracefully killing worker 4 (pid: 21295)... 2014-11-19 15:43:50.570673 Sent HUP to 21296 Gracefully killing worker 5 (pid: 21296)... Gracefully killing worker 3 (pid: 21294)... Respawned uWSGI worker 1 (new pid: 21304) Respawned uWSGI worker 2 (new pid: 21305) Respawned uWSGI worker 3 (new pid: 21306) Respawned uWSGI worker 4 (new pid: 21307) Respawned uWSGI worker 5 (new pid: 21308) Python auto-reloader enabled 2014-11-19 15:43:55.571036 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21304)... 2014-11-19 15:43:55.571167 Sent HUP to 21304 Gracefully killing worker 2 (pid: 21305)... 2014-11-19 15:43:55.571200 Sent HUP to 21305 2014-11-19 15:43:55.571232 Sent HUP to 21306 2014-11-19 15:43:55.571260 Sent HUP to 21307 2014-11-19 15:43:55.571290 Sent HUP to 21308 Gracefully killing worker 3 (pid: 21306)... Gracefully killing worker 4 (pid: 21307)... Gracefully killing worker 5 (pid: 21308)... Respawned uWSGI worker 1 (new pid: 21317) Python auto-reloader enabled Respawned uWSGI worker 2 (new pid: 21322) Respawned uWSGI worker 3 (new pid: 21323) Respawned uWSGI worker 4 (new pid: 21324) Respawned uWSGI worker 5 (new pid: 21325) 2014-11-19 15:44:00.571999 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21317)... 2014-11-19 15:44:00.572323 Sent HUP to 21317 2014-11-19 15:44:00.572408 Sent HUP to 21322 Gracefully killing worker 2 (pid: 21322)... 2014-11-19 15:44:00.572461 Sent HUP to 21323 2014-11-19 15:44:00.572516 Sent HUP to 21324 Gracefully killing worker 5 (pid: 21325)... 2014-11-19 15:44:00.572568 Sent HUP to 21325 Gracefully killing worker 3 (pid: 21323)... Gracefully killing worker 4 (pid: 21324)... Respawned uWSGI worker 2 (new pid: 21331) Respawned uWSGI worker 3 (new pid: 21332) Respawned uWSGI worker 5 (new pid: 21333) Respawned uWSGI worker 1 (new pid: 21337) Respawned uWSGI worker 4 (new pid: 21338) Python auto-reloader enabled 2014-11-19 15:44:05.572873 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21337)... 2014-11-19 15:44:05.575816 Sent HUP to 21337 2014-11-19 15:44:05.575888 Sent HUP to 21331 Gracefully killing worker 3 (pid: 21332)... 2014-11-19 15:44:05.579080 Sent HUP to 21332 2014-11-19 15:44:05.579159 Sent HUP to 21338 2014-11-19 15:44:05.579189 Sent HUP to 21333 Gracefully killing worker 5 (pid: 21333)... Gracefully killing worker 2 (pid: 21331)... Gracefully killing worker 4 (pid: 21338)... Respawned uWSGI worker 2 (new pid: 21342) Respawned uWSGI worker 3 (new pid: 21343) Respawned uWSGI worker 5 (new pid: 21344) Respawned uWSGI worker 1 (new pid: 21345) Respawned uWSGI worker 4 (new pid: 21346) Python auto-reloader enabled 2014-11-19 15:44:10.579536 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21345)... 2014-11-19 15:44:10.582839 Sent HUP to 21345 2014-11-19 15:44:10.583022 Sent HUP to 21342 2014-11-19 15:44:10.583111 Sent HUP to 21343 2014-11-19 15:44:10.583188 Sent HUP to 21346 Gracefully killing worker 4 (pid: 21346)... Gracefully killing worker 5 (pid: 21344)... 2014-11-19 15:44:10.586615 Sent HUP to 21344 Gracefully killing worker 3 (pid: 21343)... Gracefully killing worker 2 (pid: 21342)... Respawned uWSGI worker 2 (new pid: 21353) Respawned uWSGI worker 3 (new pid: 21354) Respawned uWSGI worker 5 (new pid: 21355) Respawned uWSGI worker 1 (new pid: 21356) Respawned uWSGI worker 4 (new pid: 21357) Python auto-reloader enabled 2014-11-19 15:44:15.587064 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21356)... 2014-11-19 15:44:15.587251 Sent HUP to 21356 2014-11-19 15:44:15.587290 Sent HUP to 21353 2014-11-19 15:44:15.587324 Sent HUP to 21354 Gracefully killing worker 3 (pid: 21354)... 2014-11-19 15:44:15.587356 Sent HUP to 21357 2014-11-19 15:44:15.587390 Sent HUP to 21355 Gracefully killing worker 4 (pid: 21357)... Gracefully killing worker 2 (pid: 21353)... Gracefully killing worker 5 (pid: 21355)... Respawned uWSGI worker 2 (new pid: 21367) Respawned uWSGI worker 3 (new pid: 21368) Respawned uWSGI worker 5 (new pid: 21369) Respawned uWSGI worker 1 (new pid: 21370) Respawned uWSGI worker 4 (new pid: 21371) Python auto-reloader enabled 2014-11-19 15:44:20.588180 STILL ALIVE: {} Gracefully killing worker 1 (pid: 21370)... 2014-11-19 15:44:20.588577 Sent HUP to 21370 Gracefully killing worker 2 (pid: 21367)... 2014-11-19 15:44:20.588658 Sent HUP to 21367 2014-11-19 15:44:20.588704 Sent HUP to 21368 Gracefully killing worker 3 (pid: 21368)... 2014-11-19 15:44:20.588749 Sent HUP to 21371 Gracefully killing worker 5 (pid: 21369)... 2014-11-19 15:44:20.588797 Sent HUP to 21369 gateway "uWSGI http 1" has been buried (pid: 21272) ...gracefully killing workers... respawned uWSGI http 1 (pid: 21380) worker 2 killed successfully (pid: 21367) Respawned uWSGI worker 2 (new pid: 21381) worker 3 killed successfully (pid: 21368) Respawned uWSGI worker 3 (new pid: 21382) worker 5 killed successfully (pid: 21369) Respawned uWSGI worker 5 (new pid: 21383) worker 1 killed successfully (pid: 21370) Respawned uWSGI worker 1 (new pid: 21384) Python auto-reloader enabled 2014-11-19 15:44:25.589164 STILL ALIVE: {21371: 5} 2014-11-19 15:44:25.589327 Sent HUP to 21384 Gracefully killing worker 1 (pid: 21384)... 2014-11-19 15:44:25.589356 Sent HUP to 21381 2014-11-19 15:44:25.589381 Sent HUP to 21382 2014-11-19 15:44:25.589421 Sent HUP to 21371 2014-11-19 15:44:25.589450 Sent HUP to 21383 Gracefully killing worker 2 (pid: 21381)... Gracefully killing worker 3 (pid: 21382)... Gracefully killing worker 5 (pid: 21383)... Respawned uWSGI worker 2 (new pid: 21390) Respawned uWSGI worker 3 (new pid: 21391) Respawned uWSGI worker 5 (new pid: 21392) Respawned uWSGI worker 1 (new pid: 21393) Python auto-reloader enabled 2014-11-19 15:44:30.589732 STILL ALIVE: {21371: 10}

^CThe process id is 21265 SIGINT/SIGQUIT received...killing workers... The process id is 21371 SIGINT/SIGQUIT received...killing workers... gateway "uWSGI http 1" has been buried (pid: 21380) gateway "uWSGI http 1" has been buried (pid: 21380) worker 2 buried after 1 seconds worker 3 buried after 1 seconds worker 5 buried after 1 seconds worker 1 buried after 1 seconds 2014-11-19 15:45:15.629073 STILL ALIVE: {21371: 55} 2014-11-19 15:45:15.629531 Sent HUP to 21371

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