1.tornado的demo

首先写一个tornado的demo

在生产环境中，一般使用单个的进程启动，为了简单起见，这里我们使用multiprocessing模块启动多个进程，模拟生产环境

#!/usr/bin/python#-*-encodeing:utf-8-*-import tornado.webimport tornado.ioloopimport tornado.optionsimport multiprocessingfrom tornado.options import define,optionsimport os,sysdefine("port", default=9000, help="run on the given port", type=int)class BaseHandler(tornado.web.RequestHandler):    def get_current_user(self):        return self.get_secure_cookie('user')    def get_template_path(self):        return os.path.join(os.path.dirname(__file__),'templates')class MainHandler(BaseHandler):    @tornado.web.asynchronous    @tornado.web.authenticated    def get(self):        name=tornado.escape.xhtml_escape(self.current_user)        self.write('Hello'+self.current_user)        self.finish()class LoginHandler(BaseHandler):    def lower(self,string):        return string.lower()    def get(self):        self.write('''        
    
         Username:
         Password:
         
         
    
  '''),    def post(self):        if not self.request.headers.get('Cookie'):            self.write('Please enable your Cookie option of your broswer.')            return        self.set_secure_cookie('user',self.get_argument('username'),expires_days=1)        self.redirect('/')settings={    'static_path':os.path.join(os.path.dirname(__file__),'static'),    'cookie_secret':'F/hsxF7kTIWGO1F6HrH78Rf4bMRe5EyFhjtReh6x+/E=',    'login_url':'/login',    'debug':True,}app=tornado.web.Application([    (r'/',MainHandler),    (r'/login',LoginHandler),],**settings)if __name__ == '__main__':    tornado.options.parse_command_line()    def run(mid,port):        print "Process %d start" % mid        sys.stdout.flush()        app.listen(port)        tornado.ioloop.IOLoop.instance().start()    jobs=list()    for mid,port in enumerate(range(9010,9014)):        p=multiprocessing.Process(target=run,args=(mid,port))        jobs.append(p)        p.start()

2.配置nginx的反相代理

参考安装好nginx后

进入nginx的配置目录：

cd /usr/local/nginx/conf

备份原配置文件

mv nginx.conf  nginx.conf.bak20130507

使用编辑器打开nginx.conf

#user nginx;worker_processes 1;error_log /var/log/nginx/error.log;pid /var/run/nginx.pid;events {    worker_connections 1024;    use epoll;}http {    # Enumerate all the Tornado servers here    upstream frontends {        server 127.0.0.1:9010;        server 127.0.0.1:9011;        server 127.0.0.1:9012;        server 127.0.0.1:9013;    }    include /etc/nginx/mime.types;    default_type application/octet-stream;    access_log /var/log/nginx/access.log;    keepalive_timeout 65;    proxy_read_timeout 200;    sendfile on;    tcp_nopush on;    tcp_nodelay on;    gzip on;    gzip_min_length 1000;    gzip_proxied any;    gzip_types text/plain text/html text/css text/xml               application/x-javascript application/xml               application/atom+xml text/javascript;    # Only retry if there was a communication error, not a timeout    # on the Tornado server (to avoid propagating "queries of death"    # to all frontends)    proxy_next_upstream error;    server {        listen 80;        # Allow file uploads        client_max_body_size 50M;        location ^~ /static/ {            root /var/www;            if ($query_string) {                expires max;            }        }        location = /favicon.ico {            rewrite (.*) /static/favicon.ico;        }        location = /robots.txt {            rewrite (.*) /static/robots.txt;        }        location / {            proxy_pass_header Server;            proxy_set_header Host $http_host;            proxy_redirect false;            proxy_set_header X-Real-IP $remote_addr;            proxy_set_header X-Scheme $scheme;            proxy_pass http://frontends;        }    }}

/etc/init.d/nginx_init reload

在浏览器中打开服务器ip的80端口就可以访问tornado的demo应用了