[root@data conf]# vim nginx.conf 
user www www; 
worker_processes 10; 
  
error_log /var/log/nginx/nginx_error.log; 
  
pid    logs/nginx.pid; 
  
worker_rlimit_nofile 65535 
events { 
  use epoll; 
  worker_connections 65535; 
} 
  
http { 
  include    mime.types; 
  default_type application/octet-stream; 
   
  server_names_hash_bucket_size 128; 
  client_header_buffer_size 32k; 
  large_client_header_buffers 4 32k; 
  sendfile    on; 
  tcp_nopush   on; 
  
  keepalive_timeout 65; 
  fastcgi_connect_timeout 300; 
  fastcgi_send_timeout 300; 
  fastcgi_read_timeout 300; 
  fastcgi_buffer_size 64k; 
  fastcgi_buffers 4 64k; 
  fastcgi_busy_buffers_size 128k; 
  fastcgi_temp_file_write_size 128k; 
  
  gzip on; 
  gzip_min_length 1k; 
  gzip_buffers   4 16k; 
  gzip_http_version 1.0; 
  gzip_comp_level 2; 
  gzip_types    text/plain application/x-javascript text/css application/xml; 
  gzip_vary on; 
  
  client_max_body_size 300m;  #允許客戶端請求的最大單個文件字節(jié)數(shù) 
  client_body_buffer_size 128k; #緩沖區(qū)代理緩沖用戶端請求的最大字節(jié)數(shù) 
  proxy_connect_timeout 600;  #跟后端服務器連接超時時間，發(fā)起握手等候響應超時時間 
  proxy_read_timeout  600;  #連接成功后，等候后端服務器響應時間，在后端排隊中等候 
  proxy_send_timeout 600; #后端服務器數(shù)據(jù)回傳時間，就是在規(guī)定時間內后端服務器必須傳完所有數(shù) 
  proxy_buffer_size 16k; #代理請求緩存區(qū)，這個緩存區(qū)間會保存用戶的信息以供nginx進行規(guī)則處理，一般只要能保存下頭信息即可 
  proxy_buffers 4 32k; #同上，告訴nginx保存單個用的幾個Buffer最大用多大空間 
  proxy_busy_buffers_size 54k; #如果系統(tǒng)很忙可以申請用的幾個更大的proxy_buffer 
  proxy_temp_file_write_size 64k; #緩存臨時文件大小 
  
  upstream php_server_pool { 
  server 192.168.1.100:80 weight=4 max_fails=2 fail_timeout=30s; 
  server 192.168.1.101:80 weight=4 max_fails=2 fail_timeout=30s; 
  server 192.168.1.102:80 weight=4 max_fails=2 fail_timeout=30s; 
} 
  upstream message_server_pool { 
  server 192.168.1.103:3245; 
  server 192.168.1.104:3245 down; 
} 
  upstream bbs_server_pool { 
  server 192.168.1.105:80 weight=4 max_fails=2 fail_timeout=30s; 
  server 192.168.1.106:80 weight=4 max_fails=2 fail_timeout=30s; 
  server 192.168.1.107:80 weight=4 max_fails=2 fail_timeout=30s; 
  server 192.168.1.108:80 weight=4 max_fails=2 fail_timeout=30s; 
} 
#第一個虛擬主機，反向代理php_server_pool這組服務器 
  server { 
    listen    80; 
    server_name www.chlinux.net; 
    access_log /var/log/nginx/www.chlinux.net_access.log main; 
    location / { 
#如果后端服務器返回502、504、執(zhí)行超時等錯誤，自動將請求轉發(fā)到upstream負載均衡池中的另一臺服務器，實現(xiàn)故障轉移。 
   proxy_next_upstream http_502 http_504 error timeout invalid_header; 
   proxy_pass http://php_server_pool; 
   proxy_set_header Host www.chlinux.net; 
   proxy_set_header X-Forwarded-For $remote_addr; 
    } 
  } 
#第二個虛擬主機 
  server { 
    listen    80; 
    server_name bbs.chlinux.net; 
    access_log /var/log/nginx/www.chlinux.net_access.log main; 
#訪問http://bbs.chlinux.net/message/***地址，反向代理message_server_pool這組服務器 
    location /message/ { 
     proxy_pass http://message_server_pool; 
     proxy_set_header Host $host; 
    }   
#訪問除了/message/之外的http://bbs.chlinux.net/***地址，反向代理php_server_pool這組服務器 
  location /message/ { 
     proxy_pass http://bbs_server_pool; 
     proxy_set_header Host $host; 
   proxy_set_header X-Forwarded-For $remote_addr; 
    }   
   } 
#第三個虛擬主機 
  server { 
    listen    80; 
    server_name forum.chlinux.net; 
    access_log /var/log/nginx/www.chlinux.net_access.log main; 
    location / { 
  
     proxy_next_upstream http_502 http_504 error timeout invalid_header; 
     proxy_pass http://php_server_pool; 
     proxy_set_header Host www.chlinux.net; 
     proxy_set_header X-Forwarded-For $remote_addr; 
    } 
  } 
}