​​ 

proxy_redirect off;
proxy_http_version 1.1;
proxy_set_header Host $host:$server_port;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
client_max_body_size 50m;
client_body_buffer_size 256k;
proxy_connect_timeout 30;
proxy_send_timeout 30;
proxy_read_timeout 60;

proxy_buffer_size 64k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
proxy_max_temp_file_size 128m;

html.conf

location ~ .*\.(js|css) {
    expires 3d;
}

location ~ .*\.(ico|jpg|jpeg|gif|png|swf|flv) {
    expires 7d;
}

location = /favicon.ico {
    access_log off; 
    log_not_found off;
}

location = /robots.txt  { 
    access_log off; 
    log_not_found off; 
}

error.conf

error_page 400 401 402 403 404 405 /40x.html;
location = /40x.html {
    root html;
}

error_page 500 502 503 504 /50x.html;
location = /50x.html {
    root html;
}

location ~ /\.(svn|git|htaccess) {
    deny all;
}

php.conf

location / {
        try_files $uri $uri/ /index.php?$args;
}

location ~ .*\.php {
        fastcgi_pass 127.0.0.1:9000;
        # fastcgi_pass webservers;

        fastcgi_keep_conn on;
        fastcgi_index index.php;
        include fastcgi_params;

        set $script    $uri;
        set $path_info  "/";
        if ($uri ~ "^(.+\.php)(/.+)") {
                set $script     $1;
                set $path_info  $2;
        }

        fastcgi_param PATH_INFO $path_info;
        fastcgi_param SCRIPT_FILENAME  $document_root/$script;
        fastcgi_param SCRIPT_NAME $script;
}

block_ips.conf

allow   192.168.0.0/24;
deny    all;

upstream.conf

upstream php_server {
    server 192.168.1.100:9000 weight=40;
    server 192.168.1.101:9000 weight=40;
}

vhosts/default.conf

server {
    listen 80;
    server_name _;

    root /home/webapps/default.site;
    index index.html index.php;

    location /test {
          proxy_pass http://192.168.1.100:9001;
    }

    include php.conf;
    include html.conf;
    include error.conf;
}

nginx.conf

user  nobody;
worker_processes  1;
pid        logs/nginx.pid;
events {
    use epoll;
    worker_connections  1024;
}

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"';

    access_log /dev/null;
    error_log logs/error.log;

    sendfile        on;
    tcp_nopush      on;
    tcp_nodelay     on;
    keepalive_timeout  65;

    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;

    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;

    include block_ips.conf;
    include proxy.conf;
    include upstream.conf;
    include vhosts/*.conf;
}