在配置有django,gunicorn,supervisor和Nginx的这些服务器上运行非常高的流量.但很多时候我倾向于看到502错误.所以我检查了Nginx日志以查看错误,这是记录的内容：

[error] 2388#0: *208027 connect() to unix:/tmp/gunicorn-ourapp.socket Failed (11: Resource temporarily unavailable) while connecting to upstream

任何人都可以帮助调试可能导致这种情况发生的原因吗

这是我们的Nginx配置：

sendfile on;
tcp_nopush on;
tcp_nodelay off;

listen 80 default_server;
server_name imp.ourapp.com;
access_log /mnt/ebs/Nginx-log/ourapp-access.log;
error_log /mnt/ebs/Nginx-log/ourapp-error.log;

charset utf-8;
keepalive_timeout 60;
client_max_body_size 8m;

gzip_types text/plain text/xml text/css application/javascript application/x-javascript application/json;

location / {
    proxy_pass http://unix:/tmp/gunicorn-ourapp.socket;
    proxy_pass_request_headers on;
    proxy_read_timeout 600s;
    proxy_connect_timeout 600s;
    proxy_redirect http://localhost/ http://imp.ourapp.com/;
    #proxy_set_header Host              $host;
    #proxy_set_header X-Real-IP         $remote_addr;
    #proxy_set_header X-Forwarded-For   $proxy_add_x_forwarded_for;
    #proxy_set_header X-Forwarded-Proto $my_scheme;
    #proxy_set_header X-Forwarded-Ssl   $my_ssl;
}

我们已将Django配置为在Gunicorn中作为通用WSGI应用程序运行. Supervisord用于发射炮兵工人：

home/user/virtenv/bin/python2.7 /home/user/virtenv/bin/gunicorn –config /home/user/shared/etc/gunicorn.conf.py daggr.wsgi:application

这就是gunicorn.conf.py的样子：

import multiprocessing

bind = 'unix:/tmp/gunicorn-ourapp.socket'
workers = multiprocessing.cpu_count() * 3 + 1
timeout = 600
graceful_timeout = 40

有谁知道我可以从哪里开始挖掘,看看可能导致问题的原因是什么？

这是我的ulimit -a输出在服务器上的样子：

core file size          (blocks,-c) 0
data seg size           (kbytes,-d) unlimited
scheduling priority             (-e) 0
file size               (blocks,-f) unlimited
pending signals                 (-i) 59481
max locked memory       (kbytes,-l) 64
max memory size         (kbytes,-m) unlimited
open files                      (-n) 50000
pipe size            (512 bytes,-p) 8
POSIX message queues     (bytes,-q) 819200
real-time priority              (-r) 0
stack size              (kbytes,-s) 8192
cpu time               (seconds,-t) unlimited
max user processes              (-u) 1024
virtual memory          (kbytes,-v) unlimited
file locks                      (-x) unlimited