百度百科说：
#运行用户
#user nobody;
#此参数修改为与CPU个数一致
worker_processes 1;
#error_log logs/error.log;
#error_log logs/error.log notice;
#error_log logs/error.log info;
pid logs/nginx.pid;
#后添的
worker_rlimit_nofile 51200;
events {
#单个后台worker process进程的最大并发链接数
worker_connections 51200;
}
#设定http服务器，利用它的反向代理功能提供负载均衡支持
http {
#设定mime类型,类型由mime.type文件定义
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"';
#access_log logs/access.log main;
server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
#充许客户端请求的最大单个文件字节数
client_max_body_size 10m;
client_body_buffer_size 128k;
#跟后端服务器连接的超时时间 s
proxy_connect_timeout 5;
#连接成功后等候后端服务器响应时间
proxy_read_timeout 60;
#后端服务器数据回传时间
proxy_send_timeout 30;
#代理请求缓存区
proxy_buffer_size 8k;
#同上，保存用几个buffer每个最大空间是多少
proxy_buffers 4 32k;
#如果系统很忙时可以申请更大的proxy_buffers，官方推荐*2
proxy_busy_buffers_size 64k;
#缓存临时文件的大小
proxy_temp_file_write_size 128k;
#sendfile 指令指定 nginx 是否调用 sendfile 函数（zero copy 方式）来输出文件，对于普通应用，
#必须设为 on,如果用来进行下载等应用磁盘IO重负载应用，可设置为 off，以平衡磁盘与网络I/O处理速度，降低系统的uptime.
sendfile on;
#tcp_nopush on;
#连接超时时间
#keepalive_timeout 0;
keepalive_timeout 60;
tcp_nodelay on;
#开启gzip压缩
#gzip on;
# gzip_disable "MSIE [1-6]\.(?!.*SV1)";
#gzip on;
#gzip_min_length 1k;
#gzip_buffers 4 16k;
#gzip_http_version 1.1;
#gzip_comp_level 2;
#gzip_types text/plain application/x-javascript text/css application/xml;
#gzip_vary on;
upstream test_nginx {
#ip_hash;
least_conn; #最少连接
server 127.0.0.1:8080 max_fails=2 fail_timeout=30s;
server 192.168.137.128:8080 max_fails=2 fail_timeout=30s ;
}
server {
listen 9999;#监听的端口号 一般是80端口
server_name test_nginx;
proxy_redirect off;
access_log logs/tset_nginx.log combined;
#charset koi8-r;
#access_log logs/host.access.log main;
location / {
root /root;#定义服务器的默认网站根目录位置
index index.html index.htm;
proxy_pass http://test_nginx;
proxy_set_header Host $host;
proxy_set_header X-Real-Ip $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
location /status{
stub_status on;
access_log off;
auth_basic "NginxStatus";
auth_basic_user_file htpasswd;
}
location ~ \.jsp$ {
proxy_pass http://test_nginx;
}
location ~ \.(html|js|css|png|gif)$ {
#root html;
proxy_pass http://test_nginx;
# root /var/www/virtual/htdocs;
#过期30天，静态文件不怎么更新，过期可以设大一点，如果频繁更新，则可以设置得小一点。
expires 30d;
}
#error_page 404 /404.html;
# redirect server error pages to the static page /50x.html
#
error_page 404 500 502 503 504 /50x.html;
location = /50x.html {
root html;
}
# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
# proxy_pass http://127.0.0.1;
#}
# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
# root html;
# fastcgi_pass 127.0.0.1:9000;
# fastcgi_index index.php;
# fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name;
# include fastcgi_params;
#}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
}
# another virtual host using mix of IP-, name-, and port-based configuration
#
#server {
# listen 8000;
# listen somename:8080;
# server_name somename alias another.alias;
# location / {
# root html;
# index index.html index.htm;
# }
#}
# HTTPS server
#
#server {
# listen 443;
# server_name localhost;
# ssl on;
# ssl_certificate cert.pem;
# ssl_certificate_key cert.key;
# ssl_session_timeout 5m;
# ssl_protocols SSLv2 SSLv3 TLSv1;
# ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
# ssl_prefer_server_ciphers on;
# location / {
# root html;
# index index.html index.htm;
# }
#}
}