使用Postgres和Gunicorn + Nginx作为反向代理的Django应用程序中'类型inet的输入语法无效'db错误

Question

您能帮我破译这个比较深奥的错误吗？ 启动应用程序时一切正常，但是尝试login崩溃。

在/ login /的DatabaseError

类型inet的输入语法无效：“” LINE 1：... 00101 Firefox / 41.0'，'2015-12-12 09：39：55.590036 + 00：00'，''）

异常位置：/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py在执行中，第54行

我知道inet数据类型接受IPv4和IPv6主机和网络（但不接受域名）。

追溯如下：

Traceback:
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
  187.                 response = middleware_method(request, response)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/user_sessions/middleware.py" in process_response
  46.                     request.session.save()
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/user_sessions/backends/db.py" in save
  86.                     obj.save(force_insert=must_create, using=using)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/base.py" in save
  546.                        force_update=force_update, update_fields=update_fields)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/base.py" in save_base
  650.                 result = manager._insert([self], fields=fields, return_id=update_pk, using=using, raw=raw)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/manager.py" in _insert
  215.         return insert_query(self.model, objs, fields, **kwargs)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/query.py" in insert_query
  1661.     return query.get_compiler(using=using).execute_sql(return_id)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/models/sql/compiler.py" in execute_sql
  937.             cursor.execute(sql, params)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/backends/util.py" in execute
  41.             return self.cursor.execute(sql, params)
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py" in execute
  58.             six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])
File "/home/mhb11/.virtualenvs/redditpk/local/lib/python2.7/site-packages/django/db/backends/postgresql_psycopg2/base.py" in execute
  54.             return self.cursor.execute(query, args)

Exception Type: DatabaseError at /login/
Exception Value: invalid input syntax for type inet: ""
LINE 1: ...00101 Firefox/41.0', '2015-12-12 09:39:55.590036+00:00', '')

urls.py中的/ login /网址是url(r'^login/$', 'django.contrib.auth.views.login', {'template_name': 'login.html'}, name="login"),

环境是：

具有postgresql后端的 Django 1.5.1 ，位于Ubuntu 14.04计算机上。 特别要注意的是，在我将nginx设置为gunicorn后的反向代理之后 （使用端口80进行此设置），此错误开始出现。 事情完全工作时，我使用的端口8080 仅 gunicorn（和女服务员，另一纯Python Web服务器）。

/ etc / nginx / sites-available / myproject：

server {
    listen 80;
    server_name example.cloudapp.net;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /home/mhb11/folder/myproject;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/home/mhb11/folder/myproject/myproject.sock;
    }
   error_page 500 502 503 504 /500.html;
   location = /500.html {
        root /home/mhb11/folder/myproject/templates/;
   }
}

/ etc / nginx / proxy_params：

proxy_set_header Host $http_host;
proxy_set_header User-Agent $http_user_agent;
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 $scheme;

/etc/nginx/nginx.conf：

user www-data;
worker_processes 4;
pid /run/nginx.pid;

env ON_AZURE=1;
env awsaccesskeyid=something;
env awssecretkey=something;

events {
        worker_connections 1024;
        multi_accept on;
        use epoll;
}

http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##
        gzip on;
        gzip_disable "msie6";

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascrip$

        ##
        # nginx-naxsi config
        ##
        # Uncomment it if you installed nginx-naxsi
        ##

        #include /etc/nginx/naxsi_core.rules;

        ##
        # nginx-passenger config
        ##
        # Uncomment it if you installed nginx-passenger
        ##

        #passenger_root /usr;
        #passenger_ruby /usr/bin/ruby;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}


#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}

这是怎么回事？

注意：如果需要，请询问我更多信息，例如我的gunicorn.conf和nginx.conf的外观，安装的软件包或您是否需要数据库相关的东西。 随便问吧！

Answer 1

您没有转发代理IP。 这是我在nginx配置中设置的一组转发标头：

location / {
    proxy_set_header    Host                    $http_host;
    proxy_set_header    User-Agent              $http_user_agent;
    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       $scheme;
    proxy_pass          ......;
}

Nginx文档中的更多选项-http: //nginx.org/zh/docs/http/ngx_http_proxy_module.html#proxy_set_header

然后在Django中，您可以执行以下操作：

user_ip = request.META['HTTP_X_REAL_IP`] or request.META['REMOTE_ADDR']

请注意，在将Django与SSL结合使用时，必须使用X-Forwarded-Proto ，在这种情况下，您还需要对Django进行一些配置：

SECURE_PROXY_SSL_HEADER = ('HTTP_X_FORWARDED_PROTO', 'https')

Django文档中的更多内容-https://docs.djangoproject.com/zh/1.9/ref/settings/#std:setting- SECURE_PROXY_SSL_HEADER

Answer 2

您的程序正在尝试向具有空远程IP的某些日志记录表中添加一行。 我想当您使用反向代理时，程序不知道远程IP，因为它被代理IP遮盖了。

由于它为空，我想程序正在尝试忽略代理的IP，但没有发现更好的结果。 它应该使用X-Forwarded-For标头。

如果没有可记录的IP，则程序应简单地将“ NULL”记录为IP。

Answer 3

添加自定义中间件可以解决该问题：

class XForwardedForMiddleware():
    def process_request(self, request):
        if request.META.has_key("HTTP_X_FORWARDED_FOR"):
            request.META["HTTP_X_PROXY_REMOTE_ADDR"] = request.META["REMOTE_ADDR"]
            parts = request.META["HTTP_X_FORWARDED_FOR"].split(",", 1)
            request.META["REMOTE_ADDR"] = parts[0]