Nginx

使用 gunicorn 和 Nginx 服務多個套接字會導致 NotFound 錯誤

  • April 1, 2021

我正在嘗試使用 Nginx 作為反向代理來提供兩個 Flask 應用程序。在我default.conf 重新載入的sudo service nginx restart我有：

   location /app2loc/ {
           include proxy_params;
           proxy_pass http://unix:/var/www/html/app2/app.sock;
   }
   location / {
           include proxy_params;
           proxy_pass http://unix:/var/www/html/app1/app.sock;
   }

當app1我在www.mydomain.com. 第二個應用程序app2似乎執行有任何錯誤作為證據，這是輸出sudo systemctl status app2.service：

● app2.service - Gunicorn instance to serve Flask app2.
  Loaded: loaded (/etc/systemd/system/capitcatalog.service; enabled; vendor preset: enabled)
  Active: active (running) since Thu 2021-04-01 18:11:28 CEST; 26min ago
Main PID: 24762 (gunicorn)
   Tasks: 25 (limit: 4423)
  CGroup: /system.slice/capitcatalog.service
          ├─24762 /var/www/html/app2/env/bin/python3.6 /var/www/html/app2/env/bin/gunicorn --chdir /var/www/html/app2/ -w 3 -b unix:app.sock -m 007 
          ├─24778 /var/www/html/app2/env/bin/python3.6 /var/www/html/app2/env/bin/gunicorn --chdir /var/www/html/app2/ -w 3 -b unix:app.sock -m 007 
          ├─24779 /var/www/html/app2/env/bin/python3.6 /var/www/html/app2/env/bin/gunicorn --chdir /var/www/html/app2/ -w 3 -b unix:app.sock -m 007 
          └─24780 /var/www/html/app2/env/bin/python3.6 /var/www/html/app2/env/bin/gunicorn --chdir /var/www/html/app2/ -w 3 -b unix:app.sock -m 007

但是，當我嘗試使用它訪問它時，www.mydomain.com/app2loc我有一個

Not Found
The requested URL was not found on the server. If you entered the URL manually please check your spelling and try again.

我想知道可能是什麼錯誤。為什麼第二個套接字似乎無法訪問？

這是的輸出nginx -T：

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
# configuration file /etc/nginx/nginx.conf:
user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
   worker_connections 768;
   # multi_accept on;
}

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;
   # server_name_in_redirect off;

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

   ##
   # SSL Settings
   ##

   ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
   ssl_prefer_server_ciphers on;

   ##
   # Logging Settings
   ##

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

   ##
   # Gzip Settings
   ##

   gzip on;

   # 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/javascript text/xml application/xml application/xml+rss text/javascript;

   ##
   # Virtual Host Configs
   ##

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

   # ADDED FOR UV VIEWR
   proxy_cache_key $scheme$proxy_host$uri;
   fastcgi_cache_key "$scheme$host$uri";


}


#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;
#   }
#}

# configuration file /etc/nginx/modules-enabled/50-mod-http-geoip.conf:
load_module modules/ngx_http_geoip_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-http-image-filter.conf:
load_module modules/ngx_http_image_filter_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-http-xslt-filter.conf:
load_module modules/ngx_http_xslt_filter_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-mail.conf:
load_module modules/ngx_mail_module.so;

# configuration file /etc/nginx/modules-enabled/50-mod-stream.conf:
load_module modules/ngx_stream_module.so;

# configuration file /etc/nginx/mime.types:

types {
   text/html                             html htm shtml;
   text/css                              css;
   text/xml                              xml;
   image/gif                             gif;
   image/jpeg                            jpeg jpg;
   application/javascript                js;
   application/atom+xml                  atom;
   application/rss+xml                   rss;

   text/mathml                           mml;
   text/plain                            txt;
   text/vnd.sun.j2me.app-descriptor      jad;
   text/vnd.wap.wml                      wml;
   text/x-component                      htc;

   image/png                             png;
   image/tiff                            tif tiff;
   image/vnd.wap.wbmp                    wbmp;
   image/x-icon                          ico;
   image/x-jng                           jng;
   image/x-ms-bmp                        bmp;
   image/svg+xml                         svg svgz;
   image/webp                            webp;

   application/font-woff                 woff;
   application/java-archive              jar war ear;
   application/json                      json;
   application/mac-binhex40              hqx;
   application/msword                    doc;
   application/pdf                       pdf;
   application/postscript                ps eps ai;
   application/rtf                       rtf;
   application/vnd.apple.mpegurl         m3u8;
   application/vnd.ms-excel              xls;
   application/vnd.ms-fontobject         eot;
   application/vnd.ms-powerpoint         ppt;
   application/vnd.wap.wmlc              wmlc;
   application/vnd.google-earth.kml+xml  kml;
   application/vnd.google-earth.kmz      kmz;
   application/x-7z-compressed           7z;
   application/x-cocoa                   cco;
   application/x-java-archive-diff       jardiff;
   application/x-java-jnlp-file          jnlp;
   application/x-makeself                run;
   application/x-perl                    pl pm;
   application/x-pilot                   prc pdb;
   application/x-rar-compressed          rar;
   application/x-redhat-package-manager  rpm;
   application/x-sea                     sea;
   application/x-shockwave-flash         swf;
   application/x-stuffit                 sit;
   application/x-tcl                     tcl tk;
   application/x-x509-ca-cert            der pem crt;
   application/x-xpinstall               xpi;
   application/xhtml+xml                 xhtml;
   application/xspf+xml                  xspf;
   application/zip                       zip;

   application/octet-stream              bin exe dll;
   application/octet-stream              deb;
   application/octet-stream              dmg;
   application/octet-stream              iso img;
   application/octet-stream              msi msp msm;

   application/vnd.openxmlformats-officedocument.wordprocessingml.document    docx;
   application/vnd.openxmlformats-officedocument.spreadsheetml.sheet          xlsx;
   application/vnd.openxmlformats-officedocument.presentationml.presentation  pptx;

   audio/midi                            mid midi kar;
   audio/mpeg                            mp3;
   audio/ogg                             ogg;
   audio/x-m4a                           m4a;
   audio/x-realaudio                     ra;

   video/3gpp                            3gpp 3gp;
   video/mp2t                            ts;
   video/mp4                             mp4;
   video/mpeg                            mpeg mpg;
   video/quicktime                       mov;
   video/webm                            webm;
   video/x-flv                           flv;
   video/x-m4v                           m4v;
   video/x-mng                           mng;
   video/x-ms-asf                        asx asf;
   video/x-ms-wmv                        wmv;
   video/x-msvideo                       avi;
}

# configuration file /etc/nginx/conf.d/default.conf:

server {
       server_name www.mydomain.com;
       listen 80;
       root /var/www/html/;

   # this is working properly 
   location /vrt/ {
           alias /var/www/html/vrt/; 
       }

   location /app2/ {
               include proxy_params;
               proxy_pass http://unix:/var/www/html/app2/app.sock;
       }

}        

# configuration file /etc/nginx/proxy_params:
proxy_set_header Host $http_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 $scheme;

第二個是可訪問的，並且該套接字上的應用伺服器返回“未找到”錯誤。

最有可能發生這種情況是因為 nginx 會將請求轉發/app2loc到您的第二個應用程序伺服器。

將 app2 的更改proxy_pass為：

location /app2loc/ {
   proxy_pass http://app2/;
}

upstream app2 {
   server unix:/var/www/html/app2/app.sock;
}

/末尾的額外內容proxy_pass使 nginxapp2loc從傳遞給上游的 URI 中剝離前綴。

還要記住配置應用程序的基本 URL 以包含app2loc前綴。

引用自：https://serverfault.com/questions/1059094

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