[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數   client_body_buffer_size 128k; #緩沖區代理緩沖用戶端請求的最大字節數   proxy_connect_timeout 600;  #跟后端服務器連接超時時間，發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; #后端服務器數據回傳時間，就是在規定時間內后端服務器必須傳完所有數   proxy_buffer_size 16k; #代理請求緩存區，這個緩存區間會保存用戶的信息以供nginx進行規則處理，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、執行超時等錯誤，自動將請求轉發到upstream負載均衡池中的另一臺服務器，實現故障轉移。    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;     }   } }