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该站点使用 nginx 和一个 uwsgi（烧瓶应用程序）和 shellinabox 终端运行。每 20 或 30 分钟后，shellinabox 终端没有被加载并且 nginx 日志显示这个 -

2012/05/26 14:20:27 [error] 4547#0: *117 readv() failed (104: Connection reset by peer) while reading upstream, client: 192.168.122.128, server: _, request: "POST /login/ HTTP/1.1", upstream: "uwsgi://127.0.0.1:1973", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/login/"

2012/05/26 14:20:31 [crit] 4547#0: *105 mkdir() "/var/lib/nginx/tmp/proxy/3/00" failed (13: Permission denied) while reading upstream, client: 192.168.122.128, server: _, request: "GET /terminal/proxy/ShellInABox.js HTTP/1.1", upstream: "http://127.0.0.1:4200/ShellInABox.js", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/proxy/index/"

2012/05/26 14:21:06 [error] 4547#0: *103 upstream timed out (110: Connection timed out) while reading response header from upstream 
, client: 192.168.122.128, server: _, request: "POST /terminal/proxy/? HTTP/1.1", upstream: "http://127.0.0.1:4200/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/proxy/index/"

2012/05/26 14:21:06 [error] 4547#0: *103 open() "/var/www/MYwebapp/templates/50x.html" failed (13: Permission denied), client: 192.168.122.128, server: _, request: "POST /terminal/proxy/? HTTP/1.1", upstream: "http://127.0.0.1:4200/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/proxy/index/"

2012/05/26 14:22:31 [error] 4547#0: *136 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.122.128, server: _, request: "GET /terminal/proxy/index/ HTTP/1.1", upstream: "http://127.0.0.1:4200/index/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/"

2012/05/26 14:22:31 [error] 4547#0: *136 open() "/var/www/MYwebapp/templates/50x.html" failed (13: Permission denied), client: 192.168.122.128, server: _, request: "GET /terminal/proxy/index/ HTTP/1.1", upstream: "http://127.0.0.1:4200/index/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/"

我试图设置一些超时值......到目前为止没有任何帮助。由于我对 nginx/uwsgi/shellinabox 非常陌生，因此我目前对此感到困惑。
这是我的 nginx.conf 文件-

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

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/MYwebapp_access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
    
    #
    # The default server
    #
    server {
        listen       80;
        server_name  _;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location /terminal/proxy {
          rewrite           ^/terminal/proxy/(.*)$ /$1 break;
          proxy_pass        http://localhost:4200/index;
          proxy_set_header  X-Real-IP $remote_addr;
      #proxy_read_timeout 3000;
      uwsgi_connect_timeout 6000;
      uwsgi_read_timeout 6000;
      uwsgi_send_timeout 6000;
        }

        location / { try_files $uri @MYwebapp; }
        location @MYwebapp {
          include     uwsgi_params;
          uwsgi_pass  localhost:1973;
      uwsgi_connect_timeout 6000;
      uwsgi_read_timeout 6000;
      uwsgi_send_timeout 6000;
        }

        error_page  404              /404.html;
        location = /404.html {
            root   /var/www/MYwebapp/templates;
        }

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /var/www/MYwebapp/templates;
        }

        
    }

    # Load config files from the /etc/nginx/conf.d directory
    include /etc/nginx/conf.d/*.conf;


2012/05/26 14:21:06 [error] 4547#0: *103 upstream timed out (110: Connection timed out) while reading response header from upstream 
, client: 192.168.122.128, server: _, request: "POST /terminal/proxy/? HTTP/1.1", upstream: "http://127.0.0.1:4200/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/proxy/index/"
2012/05/26 14:21:06 [error] 4547#0: *103 open() "/var/www/MYwebapp/templates/50x.html" failed (13: Permission denied), client: 192.168.122.128, server: _, request: "POST /terminal/proxy/? HTTP/1.1", upstream: "http://127.0.0.1:4200/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/proxy/index/"

2012/05/26 14:22:31 [error] 4547#0: *136 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 192.168.122.128, server: _, request: "GET /terminal/proxy/index/ HTTP/1.1", upstream: "http://127.0.0.1:4200/index/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/"
2012/05/26 14:22:31 [error] 4547#0: *136 open() "/var/www/MYwebapp/templates/50x.html" failed (13: Permission denied), client: 192.168.122.128, server: _, request: "GET /terminal/proxy/index/ HTTP/1.1", upstream: "http://127.0.0.1:4200/index/", host: "www.MYwebapp.org", referrer: "http://www.MYwebapp.org/terminal/"
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