利用nginx作tornado的反向代理

時間 2019-12-12

原文原文鏈接

1.tornado的demo

首先寫一個tornado的demo javascript

在生產環境中，通常使用單個的進程啓動，爲了簡單起見，這裏咱們使用multiprocessing模塊啓動多個進程，模擬生產環境 css

#!/usr/bin/python
#-*-encodeing:utf-8-*-
import tornado.web
import tornado.ioloop
import tornado.options
import multiprocessing
from tornado.options import define,options
import os,sys

define("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('''
<html>
  <head><title>MyDemo</title></head>
  <body>
    <form action='/login' method='post'>
    Username:<input type='text' name='username'/>
    Password:<input type='password' name='password'/>
    <input type='submit' value='Submit'/>
    </form>
  </body>
</html>
'''),

    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()

運行後,會啓動4個進程

2.配置nginx的反相代理

參考http://my.oschina.net/chenlei123/blog/128299安裝好nginx後 html

進入nginx的配置目錄： java

cd /usr/local/nginx/conf node

備份原配置文件 python

mv nginx.conf nginx.conf.bak20130507 nginx

使用編輯器打開nginx.conf web

#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;
        }
    }
}

重啓nginx

/etc/init.d/nginx_init reload shell

在瀏覽器中打開服務器ip的80端口就能夠訪問tornado的demo應用了瀏覽器