cat /usr/local/nginx/conf/nginx.conf

user  www www;

worker_processes auto;

error_log  /home/wwwlogs/nginx_error.log  crit;
pid        /usr/local/nginx/logs/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;
        multi_accept on;
    }

http
    {
        include       mime.types;
        default_type  application/octet-stream;

        log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                          '$status $body_bytes_sent "$http_referer" '
                          '"$http_user_agent" "$http_x_forwarded_for"';

        server_names_hash_bucket_size 128;
        client_header_buffer_size 64k;
        large_client_header_buffers 4 64k;
        client_max_body_size 30m;

        sendfile   on;
        tcp_nopush on;
        keepalive_timeout 120;
        tcp_nodelay on;

        upstream backend {
           server 192.168.1.100:80 weight=5 max_fails=5 fail_timeout=15s;
           server 192.168.1.99:80 weight=5 max_fails=5 fail_timeout=15s;
           keepalive 600;
        }

        gzip on;
        gzip_min_length  1k;
        gzip_buffers     4 64k;
        gzip_http_version 1.1;
        gzip_comp_level 4;
        gzip_types     text/plain application/javascript application/x-javascript text/javascript text/css application/xml application/xml+rss;
        gzip_vary on;
        gzip_proxied   expired no-cache no-store private auth;
        gzip_disable   "MSIE [1-6]\.";

        limit_conn_zone $binary_remote_addr zone=conip:50m;
        limit_req_zone $binary_remote_addr zone=reqip:50m rate=100r/s;

        server_tokens off;
        access_log off;

        open_file_cache max=204800 inactive=20s; 
        open_file_cache_valid 30s; 
        open_file_cache_min_uses 1; 
        open_file_cache_errors on; 

        proxy_temp_path   /home/proxy_temp;
        proxy_cache_path  /home/proxy_cache levels=1:2 keys_zone=cache_one:500m inactive=99s max_size=1g;        

        #include guolv_ip.conf;
        include vhost/*.conf;
}