nginx怎么配置反向代理

## Basic reverse proxy server ##
## Apache backend for www.redis.com.cn ##
upstream apachephp  {
    server ip:8080; #Apache
}

## Start www.redis.com.cn ##
server {
    listen 80;
    server_name  www.redis.com.cn;

    access_log  logs/redis.access.log  main;
    error_log  logs/redis.error.log;
    root   html;
    index  index.html index.htm index.php;

    ## send request back to apache ##
    location / {
        proxy_pass  http://apachephp;

        #Proxy Settings
        proxy_redirect     off;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
        proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
        proxy_max_temp_file_size 0;
        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;
   }
}
## End www.redis.com.cn ##