tornado + nginx 线上部署

为什么需要nginx

• tornado 内置的web http server 功能受限
• python的多线程 是解释器GIL的大锁 实际是一个线程运行
• 充分利用多核能力

nginx

点击查看代码

user nginx;
worker_processes 5;
error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;
events {
    worker_connections 1024;
    use epoll;
}
proxy_next_upstream error;
    upstream tornadoes {
    server 127.0.0.1:8000;
    server 127.0.0.1:8001;
    server 127.0.0.1:8002;
    server 127.0.0.1:8003;
}
server {
    listen 80;
    server_name www.example.org *.example.org;
    location /static/ {
        root /var/www/static;
        if ($query_string) {
        expires max;
        }
    }
    location / {
        proxy_pass_header Server;
        proxy_set_header Host $http_host;
        proxy_redirect off;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Scheme $scheme;
        proxy_pass http://tornadoes;
    }
}

守护进程 supervisor

点击查看代码

[program:tornado-8000]
command=python /var/www/main.py --port=8000
directory=/var/www
user=www-data
autorestart=true
redirect_stderr=true
stdout_logfile=/var/log/tornado.log
loglevel=info

[program:tornado-8001]
command=python /var/www/main.py --port=8001
directory=/var/www
user=www-data
autorestart=true
redirect_stderr=true
stdout_logfile=/var/log/tornado.log
loglevel=info

[program:tornado-8002]
command=python /var/www/main.py --port=8001
directory=/var/www
user=www-data
autorestart=true
redirect_stderr=true
stdout_logfile=/var/log/tornado.log
loglevel=info

[program:tornado-8003]
command=python /var/www/main.py --port=8001
directory=/var/www
user=www-data
autorestart=true
redirect_stderr=true
stdout_logfile=/var/log/tornado.log
loglevel=info

tornado app.py

点击查看代码

package tornados

tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web

from tornado.options import define, options


define("port", default = 8000, help = "run on the given port", type = int)

class IndexHandler(tornado.web.RequestHandler):
	def get(self):
		greeting = self.get_argument('greeting', 'Hello')
		self.write(greeting + ', friendly user!')

if __name__ == "__main__":
	tornado.options.parse_command_line()
	app = tornado.web.Application(handlers = [(r"/", IndexHandler)])
	http_server = tornado.httpserver.HTTPServer(app)
	http_server.listen(options.port)
	tornado.ioloop.IOLoop.instance().start()