Postfix 之七 从apache移植到nginx后台

前面搭建好了postfix整套系统,现在就将它的web端从apache移置到nginx后台.
extmail extman放在/var/www/extsuite目录下。
extmail extman的FCGI脚本是要启动/var/www/extsuite/extmail/dispatch-init，并且配置端口为8888。

需要先安装：# echo "install FCGI" |perl -MCPAN -e shell
#/var/www/extsuite/extmail/dispatch-init start


#vi /usr/local/nginx/conf/nginx.conf

worker_processes  1;
worker_rlimit_nofile 51200;
events {
     use epoll;
      worker_connections 51200;
}
http {
    include       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  logs/access.log  main;
    sendfile        on;
    #tcp_nopush     on;
    send_timeout  3m;
    keepalive_timeout  65;
    #gzip  on;
server {
        listen       80;
        server_name mail.test.com;
        root /var/www/extsuite/extmail/html;
        index index.html index.htm index.php;
        access_log  logs/mail.harrytest.log  main;
        keepalive_timeout  60;
        fastcgi_connect_timeout 300;
        fastcgi_buffer_size 128k;
        fastcgi_buffers 16 128k ;
        fastcgi_send_timeout 300;
        fastcgi_read_timeout 300;
        fastcgi_busy_buffers_size 128k;
        fastcgi_temp_file_write_size 128k;
        #     charset gb2312;
        if (-d $request_filename){
                 rewrite ^/(.*)([^/])$ http://$host/$1$2/ permanent;
                }

        location /extmail/cgi {
              #fastcgi_pass  unix:/tmp/php-cgi.sock;
                fastcgi_pass  127.0.0.1:8888;
                fastcgi_index index.cgi;
                fastcgi_param  SCRIPT_FILENAME /var/www/extsuite/extmail/cgi/$fastcgi_script_name;
                include fastcgi.conf;
          }
    location ^~ /extmail {
                alias  /var/www/extsuite/extmail/html/;
         }
    location /extman/cgi {
                fastcgi_pass  127.0.0.1:8888;
                fastcgi_index         index.cgi;
                fastcgi_param  SCRIPT_FILENAME   /var/www/extsuite/extman/cgi/$fastcgi_script_name;
                include fastcgi.conf;
        }
       location ^~ /extman {
                alias  /var/www/extsuite/extman/html/;
         }
#------ nginx.conf  phpadmin --------#
        location  /phpadmin{                 root  /var/www/;                 index index.php ;         }        location ~ ^/phpadmin/.*\.(php|php5)?$        {                root /var/www/;                fastcgi_pass  127.0.0.1:9000;                fastcgi_index index.php;                include fastcgi.conf;        }#------ nginx.conf  phpadmin end --------#

    location ~ .*\.(php|php5)?$

     {
      fastcgi_pass  127.0.0.1:9000;
      fastcgi_index index.php;
       include fastcgi.conf;
     }

    #location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
    # 
{
    #            expires      30d;
    #  }

   #location ~ .*\.(js|css)?$
    #   {
    #   expires      1h;
    #   }
  }
}

更改为：

worker_processes 2;
worker_rlimit_nofile 51200;
events {
     use epoll;
      worker_connections 51200;
}
http {
    include 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 logs/access.log main;
    sendfile on;
    #tcp_nopush on;
    send_timeout 3m;
    keepalive_timeout 65;
    #gzip on;
server {
        listen 80;
        server_name mail.madeforchina.com;
        root /var/www/extsuite/extmail/html/;
        index index.html index.htm index.php index.cgi;

        access_log logs/mail.madeforchina.log main;
        keepalive_timeout 60;

        fastcgi_connect_timeout 300;
        fastcgi_buffer_size 128k;
        fastcgi_buffers 16 128k ;
        fastcgi_send_timeout 300;
        fastcgi_read_timeout 300;
        fastcgi_busy_buffers_size 128k;
        fastcgi_temp_file_write_size 128k;
        # charset gb2312;

        if (-d $request_filename){
                 rewrite ^/(.*)([^/])$ http://$host/$1$2/ permanent;
               }
         location  /extmail {
                alias /var/www/extsuite/extmail/html/;
         }

        location /extmail/cgi {
                alias /var/www/extsuite/extmail/cgi/;
                #fastcgi_pass 127.0.0.1:8888;
                #fastcgi_index index.cgi;
                #fastcgi_param SCRIPT_FILENAME /var/www/extsuite/extmail/cgi/$fastcgi_script_name;
                #include fastcgi.conf;
          }
        location ~.*\.cgi$ {

             fastcgi_pass 127.0.0.1:8888;
             fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
             include fastcgi.conf;
        }

         location  /extman {
                alias /var/www/extsuite/extman/html/;
         }
        location /extman/cgi {
                alias /var/www/extsuite/extman/cgi/;
                #fastcgi_pass 127.0.0.1:8888;
                #fastcgi_index index.cgi;
                #fastcgi_param SCRIPT_FILENAME /var/www/extsuite/extman/cgi/$fastcgi_script_name;
                #include fastcgi.conf;
        }

        location ~ .*\.(php|php5)?$ {
                fastcgi_pass 127.0.0.1:9000;
                fastcgi_index index.php;
                include fastcgi.conf;
        }

        location /NginxStatus {
                        stub_status             on;
                        access_log              off;
                        allow 1.2.3.4;
                        deny all;
                }

 }

}

#vi /usr/local/nginx/conf/fastcgi.conf

fastcgi_param  SCRIPT_FILENAME    $document_root$fastcgi_script_name;
fastcgi_param  QUERY_STRING       $query_string;
fastcgi_param  REQUEST_METHOD     $request_method;
fastcgi_param  CONTENT_TYPE       $content_type;
fastcgi_param  CONTENT_LENGTH     $content_length;

fastcgi_param  SCRIPT_NAME        $fastcgi_script_name;
fastcgi_param  REQUEST_URI        $request_uri;
fastcgi_param  DOCUMENT_URI       $document_uri;
fastcgi_param  DOCUMENT_ROOT      $document_root;
fastcgi_param  SERVER_PROTOCOL    $server_protocol;

fastcgi_param  GATEWAY_INTERFACE  CGI/1.1;
fastcgi_param  SERVER_SOFTWARE    nginx/$nginx_version;

fastcgi_param  REMOTE_ADDR        $remote_addr;
fastcgi_param  REMOTE_PORT        $remote_port;
fastcgi_param  SERVER_ADDR        $server_addr;
fastcgi_param  SERVER_PORT        $server_port;
fastcgi_param  SERVER_NAME        $server_name;

# PHP only, required if PHP was built with --enable-force-cgi-redirect
fastcgi_param  REDIRECT_STATUS    200;

修改dispatch-init，这里需要注意postfix的用户和组：
#vi /var/www/extsuite/extmail/dispatch-init

MAXFORK=10
MINFORK=2
MAXREQS=25
TIMEOUT=360
PORT=8888
SU_UID=vmail
SU_GID=vmail

PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/local/sbin
BASE=/var/www/extsuite/extmail
BIN=dispatch.fcgi
PID_FILE=/$BASE/$BIN.pid

export PATH=$PATH

........

ExtMail中sort2name问题:  
参考：
问题：Undefined subroutine &Ext::Utils::sort2name called at /var/www/extsuite/extmail/libs/Ext/App/Folders.pm line 387
这个问题一般出现在webmail和后台都同时配置了FCGI或cgi server，然后在某个时刻先访问了后台再访问webmail，造成@INC问题后就容易再次出现了！

最后查出来最可能的原因是持续环境下，Webmail和后台的同名perl模块Utils.pm内容不一致导致的。后台的Utils.pm里没有 sort2name和name2sort函数的定义，在Perl持续环境下，@INC中第一个能找到Ext::Utils的路径如果不是 extmail/libs而是extman/libs，那么对sort2name的调用就因为找不到对应的定义而报上面的错。

如何解决？
问题一旦确定是搜索路径下Utils.pm缺少sort2name的定义，那么解决就很容易了，无非有几个：
1）将extmail的Utils拷贝到extman目录下，保持两边同步
2）将Webmail和后台公共用到的模块抽出来放到一个公共目录，避免名字空间重叠的现象
3）模块改名，例如extman/libs/Ext/Utils.pm可以改为extman/libs/Ext/ManUtils.pm，避免名字空间重叠