浅谈Nginx七层反向代理和负载均衡

 server {

    listen    80;

    server_name cloud.beyond.com;

    index index.php;

    location / {

    proxy_pass http://192.168.254.250:8000;

    proxy_set_header host $host;

    proxy_set_header X-Forwarded-For $remote_addr;

    client_body_buffer_size  4K;

    proxy_connect_timeout  90;

    proxy_send_timeout  90;

    proxy_read_timeout  90;

    proxy_buffer_size  4K;

    proxy_buffers   4 32K;

    proxy_busy_buffers_size 64K;

    proxy_temp_file_write_size 64K;
}
  }

 server {

    listen    80;

    server_name film.beyond.com;

    index index.php;

    location / {

    proxy_pass http://web;

    proxy_set_header host $host;

    proxy_set_header X-Forwarded-For $remote_addr;

    client_body_buffer_size  4K;

    proxy_connect_timeout  90;

    proxy_send_timeout  90;

    proxy_read_timeout  90;

    proxy_buffer_size  4K;

    proxy_buffers   4 32K;

    proxy_busy_buffers_size 64K;

    proxy_temp_file_write_size 64K;

}
  }

 server {

    listen    80;

    server_name mail.beyond.com;

    index index.php;

    location / {

    proxy_pass http://192.168.254.250:80;

    proxy_set_header host $host;

    proxy_set_header X-Forwarded-For $remote_addr;

    client_body_buffer_size  4K;

    proxy_connect_timeout  90;

    proxy_send_timeout  90;

    proxy_read_timeout  90;

    proxy_buffer_size  4K;

    proxy_buffers   4 32K;

    proxy_busy_buffers_size 64K;

    proxy_temp_file_write_size 64K;
}

  }

 server {

    listen    80;

    server_name monitor.beyond.com;

    index index.php;

    location / {

    proxy_pass http://192.168.254.220;

    proxy_set_header host $host;

    proxy_set_header X-Forwarded-For $remote_addr;

    client_body_buffer_size  4K;

    proxy_connect_timeout  90;

    proxy_send_timeout  90;

    proxy_read_timeout  90;

    proxy_buffer_size  4K;

    proxy_buffers   4 32K;

    proxy_busy_buffers_size 64K;

    proxy_temp_file_write_size 64K;

 

}

  }

 server {

    listen    80;

    server_name www.beyond.com;

    root /usr/local/nginx/html/www;

    index index.html;

    access_log logs/current/www.beyond.com-access.log main;

    error_log logs/current/www.beyond.com-error.log;

     error_page  500 501 502 503 504 /error/5-error.html;  

    error_page 400 403 404 405 408 410 411 412 413 414 415 /error/4-error.html;

 

    location ~ .*.(gif|jpg|jpeg|png|bmp|swf)$ {

        expires 30d;

    }

 

    location ~.*.(js|css|javascript|fluash)$ {

        expires 24h;

    }

    location /error {

    root /usr/local/nginx/logs/error;

    }

 

  }

注意每个server是一个.conf的文件

upstream.conf文件：

upstream web {

server 192.168.254.253 weight=1 max_fails=2 fail_timeout=10s ;

server 192.168.254.252 weight=1 max_fails=2 fail_timeout=10s ;

server 192.168.254.251 weight=1 max_fails=2 fail_timeout=10s ;

}