Nginx 和 uWSGI 的内部服务器错误

Question

我正在尝试在 Linode.com 上使用 Nginx 托管一个应用程序，但我在 uWSGI 配置上遇到了早期问题。

我使用了"Getting Started" guide 和"WSGI using uWSGI and nginx on Ubuntu 12.04 (Precise Pangolin)" guide，并且成功部署了 Nginx（在浏览器中收到了 Nginx 欢迎消息）。

虽然上面的教程适用于 Ubuntu 12.04，但我使用的是 14.04。

当我进行 uWSGI 配置和“Hello World”Python 应用程序时，问题就开始了。在浏览器中转到location / 会返回Failed to load resource: the server responded with a status of 500 (Internal Server Error)，并且服务器error.log 中不会记录任何内容。 location /static 可以正常工作，并且可以顺利提供文件。

我尝试了很多东西，并在 Google 和 Stackoverflow 上广泛寻找修复方法，但一无所获，我现在有点沮丧。

感谢您的帮助。

这是我的配置文件（我已经隐藏了我的域和 ip）：

/etc/hosts

127.0.0.1   localhost
127.0.1.1   ubuntu
XX.XX.XX.XXX mars

# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

/etc/nginx/sites-enabled/example.com

server {
    listen      80;
    server_name $hostname;
    access_log  /srv/www/example.com/logs/access.log;
    error_log   /srv/www/example.com/logs/error.log;

    location / {
        #uwsgi_pass 127.0.0.1:9001;
        uwsgi_pass  unix:///run/uwsgi/app/example.com/example.com.socket;
        include     uwsgi_params;
        uwsgi_param UWSGI_SCHEME $scheme;
        uwsgi_param SERVER_SOFTWARE nginx/$nginx_version;
    }

    location /static {
        root        /srv/www/example.com/public_html/;
        index       index.html index.htm;
    }

}

/etc/uwsgi/apps-enabled/example.com.xml

<uwsgi>
    <plugin>python</plugin>
    <socket>/run/uwsgi/app/example.com/example.com.socket</socket>
    <pythonpath>/srv/www/example.com/application/</pythonpath>
    <app mountpoint="/">

        <script>wsgi_configuration_module</script>

    </app>
    <master/>
    <processes>4</processes>
    <harakiri>60</harakiri>
    <reload-mercy>8</reload-mercy>
    <cpu-affinity>1</cpu-affinity>
    <stats>/tmp/stats.socket</stats>
    <max-requests>2000</max-requests>
    <limit-as>512</limit-as>
    <reload-on-as>256</reload-on-as>
    <reload-on-rss>192</reload-on-rss>
    <no-orphans/>
    <vacuum/>
</uwsgi>

/srv/www/example.com/application/wsgi_configuration_module.py

import os
import sys
sys.path.append('/srv/www/example.com/application')
os.environ['PYTHON_EGG_CACHE'] = '/srv/www/example.com/.python-egg'

def application(environ, start_response):
    start_response('200 OK', [('Content-Type', 'text/html')])

    return 'Hello world!'

last access log

XX.XX.XX.XXX - - [05/Jul/2015:10:03:37 -0400] "GET / HTTP/1.1" 500 32 "-" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36"
XX.XX.XX.XXX - - [05/Jul/2015:10:03:38 -0400] "GET /favicon.ico HTTP/1.1" 500 32 "http://example.com/" "Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.130 Safari/537.36"

only error log I've got only one time when trying to fix this

2015/07/05 08:49:06 [crit] 25301#0: *17 connect() to unix:///run/uwsgi/app/example.com/example.com.socket failed (2: No such file or directory) while connecting to upstream, client: XX.XX.XX.XXX, server: mars, request: "GET / HTTP/1.1", upstream: "uwsgi://unix:///run/uwsgi/app/example.com/example.com.socket:", host: "example.com"
2015/07/05 08:49:07 [crit] 25301#0: *17 connect() to unix:///run/uwsgi/app/example.com/example.com.socket failed (2: No such file or directory) while connecting to upstream, client: XX.XX.XX.XXX, server: mars, request: "GET /favicon.ico HTTP/1.1", upstream: "uwsgi://unix:///run/uwsgi/app/example.com/example.com.socket:", host: "example.com", referrer: "http://example.com/"

Answer 1

我不明白 /etc/nginx/sites-enabled/dev.host.in 是什么？如何或为什么 *.in？ 我觉得你应该试试

step 1.

create project.ini file

# django_project.ini file
[uwsgi]

# Django-related settings
# the base directory (full path)
chdir           = /home/username/django_project
# Django's wsgi file
module          = blog.wsgi
# the virtualenv (full path)
home            = /home/username/Env/project
# process-related settings
master          = true
pidfile         = /tmp/proj_uwsgi.pid
# maximum number of worker processes
processes       = 5
# the socket
socket          = :8001
# ... with appropriate permissions - may be needed
# chmod-socket    = 664
# clear environment on exit
vacuum           = true
# background the process
daemonize        = /home/username/django_project/error_uwsgi.log


step 2.

create mysite.conf in nginx, vim /etc/nginx/conf.d/mysite.conf

upstream django {
    #server unix:///home/username/django_project/djproj.sock; # for a file socket
    server 127.0.0.1:8001; # for a web port socket (we'll use this first)
}

# configuration of the server
server {
    # the port your site will be served on
    listen      80;
    # the domain name it will serve for
    server_name localhost mysite.com www.mysite.com; # substitute your machine's IP address or FQDN
    charset     utf-8;

    # max upload size
    client_max_body_size 75M;   # adjust to taste

    # Django media
    location /media  {        alias /home/username/django_project/media;  # your Django project's media files - amend as required
    }

    location /static {        alias /home/username/django_project/static; # your Django project's static files - amend as required
    }

    # Finally, send all non-media requests to the Django server.
    location / {
        uwsgi_pass  127.0.0.1:8001;#project;        
        include     /home/username/django_project/uwsgi_params; # the uwsgi_params file you installed
    }
}



step 3.

ln -s /etc/nginx/uwsgi_params /home/username/django_project/

step 4.

uwsgi --ini django_project.ini

uwsgi --stop /tmp/proj_uwsgi.pid
uwsgi --reload /tmp/proj_uwsgi.pid