详解nginx反向代理配置及优化

/usr/sbin/groupadd www
/usr/sbin/useradd -g www www

wget ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-7.8.tar.gz
tar zxvf pcre-7.8.tar.gz
cd pcre-7.8/
./configure
make && make install

wget http://sysoev.ru/nginx/nginx-0.7.58.tar.gz
tar zxvf nginx-0.7.58.tar.gz
cd nginx-0.7.58/
./configure --user=www --group=www --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --with-cc-opt='-O2' --with-cpu-opt=opteron
make && make install

user  www www;
worker_processes 4;

# [ debug | info | notice | warn | error | crit ]
error_log  /usr/local/webserver/nginx/logs/nginx_error.log  crit;
pid        /usr/local/webserver/nginx/nginx.pid;
#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 51200;
events
{
     use epoll;
     worker_connections 51200;
}

http
{
     include       mime.types;
     default_type  application/octet-stream;
     source_charset GB2312;
     server_names_hash_bucket_size 256;
     client_header_buffer_size 256k;
     large_client_header_buffers 4 256k;

     #size limits
     client_max_body_size       50m;
     client_body_buffer_size    256k;
     client_header_timeout   3m;
     client_body_timeout 3m;
     send_timeout       3m;
#参数都有所调整.目的是解决代理过程中出现的一些502 499错误   
     sendfile on;
     tcp_nopush     on;
     keepalive_timeout 120; #参数加大,以解决做代理时502错误
     tcp_nodelay on;
    
     include          vhosts/upstream.conf;
     include          vhosts/bbs.linuxtone.conf; 

}

upstream.conf
      upstream bbs.linuxtone.com {
         server 192.168.1.4:8099;
       }

bbs.linuxtone.conf
server
   {
      listen       80;
      server_name  bbs.linuxtone.conf;
      charset GB2312;
      index index.html index.htm;
      root  /date/wwwroot/linuxtone/;

        location ~ ^/NginxStatus/ {
            stub_status on;
            access_log off;
         }

     location / {
       root  /date/wwwroot/linuxtone/;
       proxy_redirect off ;
       proxy_set_header Host $host;
       proxy_set_header X-Real-IP $remote_addr;
       proxy_set_header REMOTE-HOST $remote_addr;
       proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
       client_max_body_size 50m;
       client_body_buffer_size 256k;
       proxy_connect_timeout 30;
       proxy_send_timeout 30;
       proxy_read_timeout 60;
       proxy_buffer_size 256k;
       proxy_buffers 4 256k;
       proxy_busy_buffers_size 256k;
       proxy_temp_file_write_size 256k;
       proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
       proxy_max_temp_file_size 128m;
       proxy_pass  http://bbs.linuxtone.com;
      }

#Add expires header for static content
   location ~* \.(jpg|jpeg|gif|png|swf)$ {
     if (-f $request_filename) {
       root /date/wwwroot/linuxtone/;
       expires      1d;
       break;
      }
   }

     log_format  access  '$remote_addr - $remote_user [$time_local] "$request" '
                         '$status $body_bytes_sent "$http_referer" '
                         '"$http_user_agent" $http_x_forwarded_for';
    access_log  /exp/nginxlogs/bbs.linuxtone_access.log  access;
  
}

location / {
      proxy_pass  http://192.168.1.4:8099/;
      proxy_redirect default ;
      }

        location /linuxtone/ {
              proxy_pass  http://192.168.1.4:8099/linuxtone/;
              proxy_redirect default ;
         }

<VirtualHost 192.168.1.4:8099>
    ServerAdmin liuyu105#gmail.com
    DocumentRoot /date/wwwroot/linuxtone
    ServerName bbs.linuxtone.com
    ErrorLog logs/linuxtone_error_log
   CustomLog "|/usr/local/sbin/cronolog logs/linuxtone_access_log.%Y%m%d" combined
</VirtualHost>

<IfModule mpm_prefork_module>
    StartServers          15
    MinSpareServers       15
    MaxSpareServers      30
    ServerLimit         2536
    MaxClients          2048
    MaxRequestsPerChild   1500
</IfModule>

Timeout 120  #与nginx的保持一至
KeepAlive On
MaxKeepAliveRequests 400
KeepAliveTimeout 7

wget http://bart.eaccelerator.net/source/0.9.5.3/eaccelerator-0.9.5.3.tar.bz2
tar jxvf eaccelerator-0.9.5.3.tar.bz2
cd eaccelerator-0.9.5.3/
/usr/local/webserver/php/bin/phpize
./configure --enable-eaccelerator=shared --with-php-config=/usr/local/php5/bin/php-config
make
make install

sed -i 's#extension_dir = "./"#extension_dir = "/usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/"\nextension = "memcache.so"\n#' /etc/php.ini
sed -i 's#output_buffering = Off#output_buffering = On#' /etc/php.ini
sed -i "s#; always_populate_raw_post_data = On#always_populate_raw_post_data = On#g" /etc/php.ini

mkdir -p /usr/local/webserver/eaccelerator_cache
vi /etc/php.ini

[eaccelerator]
zend_extension="/usr/local/php5/lib/php/extensions/no-debug-non-zts-20060613/eaccelerator.so"
eaccelerator.shm_size="128"
eaccelerator.cache_dir="/usr/local/webserver/eaccelerator_cache"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="300"
eaccelerator.shm_prune_period="120"
eaccelerator.shm_only="0"
eaccelerator.compress="1"
eaccelerator.compress_level="9"

ulimit -SHn 51200
/usr/local/webserver/nginx/sbin/nginx -t 
/usr/local/webserver/nginx/sbin/nginx

#!/bin/bash
# This script run at 00:00

# The Nginx logs path
logs_path="/exp/nginxlogs/"

mkdir -p ${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/
mv ${logs_path}bbs.linuxtone_access.log ${logs_path}$(date -d "yesterday" +"%Y")/$(date -d "yesterday" +"%m")/bbs.linuxtone_access_$(date -d "yesterday" +"%Y%m%d").log
kill -USR1 `cat /usr/local/webserver/nginx/nginx.pid`