无法启动uwsgi进程

Question

无法通过ini标志启动uwsgi进程

uwsgi --ini file.ini

没有任何uwsgi pids

ps aux | grep uwsgi
root     31605  0.0  0.3   5732   768 pts/0    S+   06:46   0:00 grep uwsgi

file.ini

[uwsgi]

chdir =/var/www/lvpp/site

wsgi-file =/var/www/lvpp/lvpp.wsgi

master = true

processes = 1

chmod-socket=664

socket = /var/www/lvpp/lvpp.sock

pidfile= /var/www/lvpp/lvpp.pid

daemonize =/var/www/lvpp/logs/lvpp.log

vacuum = true

uid = www

gid = www

env = DJANGO_SETTINGS_MODULE=settings

文件lvpp.log

*** Starting uWSGI 2.0.10 (32bit) on [Wed Apr  8 06:46:15 2015] ***
compiled with version: 4.4.7 20120313 (Red Hat 4.4.7-11) on 17 March   2015 21:29:09
os: Linux-2.6.32-431.29.2.el6.i686 #1 SMP Tue Sep 9 20:14:52 UTC 2014
machine: i686
clock source: unix
pcre jit disabled
detected number of CPU cores: 1
current working directory: /var/www/lvpp
writing pidfile to /var/www/lvpp/lvpp.pid
detected binary path: /var/www/lvpp/site/env/bin/uwsgi
setgid() to 503
setuid() to 501
chdir() to /var/www/lvpp/site/
your processes number limit is 1812
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)
error removing unix socket, unlink(): Permission denied [core/socket.c  line 198]
bind(): Address already in use [core/socket.c line 230]

它工作得很早.但是当我调用kill -9 uwsgi.pid时,我无法再次启动uwsgi进程.

请告诉我,为什么我可以再次启动uwsgi进程？谢谢

Answer 1

关键是:删除unix socket时出错,unlink():权限被拒绝[core/socket.c第198行]

您(很可能)以前以root身份运行uwsgi实例,创建具有root权限的unix套接字文件.

现在你的实例(作为www运行)无法重新绑定()该套接字,因为它无法取消链接(没有权限)

只需删除套接字文件并重试即可.

Answer 2

我遇到了一个非常类似的问题,除非删除套接字文件后仍然无法正常工作.原来这是因为uWSGI不能创建一个新的(这不仅是因为我跑uwsgi自己存在).非常简单的解决方案是chmod包含套接字文件的目录,允许www用户在那里创建和修改文件.现在很明显,但也许这将有助于将来可怜的闷棍撞在墙上,因为我今天已经玩了太多时间.

root@srv16:/var/run/uwsgi> ls -la
total 0
drwxr-xr-x  2 root    root      60 Jul 16 07:11 .          #<-- problem
drwxr-xr-x 25 root    root     880 Jul 19 09:14 ..
srw-rw----  1 www-app www-data   0 Jul 16 07:11 app.socket 
               #^-- no idea how www-app managed to create that file

root@simsrv16:/var/run/uwsgi> chmod 777 .                  #<-- fix