Nginx + tornado + supervisor部署

参考链接：supervisor + Tornado + Nginx 使用详解, 用tornado ,Supervisord ,nginx架网站， tornado官方文档

项目文档树：

.
├── chnservices
│   └── channels.py
├── etc
│   ├── chnservices.conf
│   ├── nginx
│   │   └── nginx.conf
│   ├── supervisord.conf
│   └── supervisord.conf.original
└── venv
    ├── bin
    │   ├── activate
    │   ├── activate.csh
    │   ├── activate.fish
    │   ├── activate_this.py
    │   ├── easy_install
    │   ├── easy_install-2.7
    │   ├── pip
    │   ├── pip2
    │   ├── pip2.
    │   ├── python
    │   ├── python2 -> python
    │   └── python2. -> python
    ├── include
    │   └── python2. -> /usr/include/python2.
    ├── lib
    │   └── python2.
    └── local
        ├── bin -> /a/path/venv/bin
        ├── include -> /a/path/venv/include
        └── lib -> /a/path/venv/lib

supervisor.conf(部分)

[program:app-channels]
process_name=%(program_name)s-%(process_num)s
directory=/a/path/chnservices/
command=/a/path/venv/bin/python2.7 /a/path/chnservices/channels.py --port=%(process_num)s
numprocs=2
numprocs_start=8001
;umask=022
;priority=999
autostart=true
startsecs=2
;startretries=3
;autorestart=unexpected
;exitcodes=0,2
;stopsignal=QUIT
;stopwaitsecs=10
;stopasgroup=false
;killasgroup=false
user=www-data
redirect_stderr=true
stdout_logfile=/var/log/nginx/chn_stdout.log
;stdout_logfile_maxbytes=1MB
;stdout_logfile_backups=10
;stdout_capture_maxbytes=1MB
;stdout_events_enabled=false
stderr_logfile=/var/log/nginx/chn_stderr.log
;stderr_logfile_maxbytes=1MB
;stderr_logfile_backups=10
;stderr_capture_maxbytes=1MB
;stderr_events_enabled=false
;environment=A="",B=""
;serverurl=AUTO

channels.py

import tornado.ioloop
import tornado.web
from tornado.options import define, options

define("port", default=8006, help="run on the given port", type=int)

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")

def make_app():
    return tornado.web.Application([
        (r"/", MainHandler),
    ])  

if __name__ == "__main__":
    tornado.options.parse_command_line()
    # tornado.options.parse_config_file("/etc/chnservices.conf")
    print 'port:',options.port
    app = make_app()
    app.listen(options.port)
    tornado.ioloop.IOLoop.current().start()

nginx.conf（tornado推荐配置修改）

user www-data;
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 127.0.0.1:8001;
        server 127.0.0.1:8002;
    }

    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;
    proxy_next_upstream error;

    server {
        listen 8000;

        # Allow file uploads
        client_max_body_size 50M;

        location ^~ /static/ {
            root /var/www/tornado/;
            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 off;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Scheme $scheme;
            proxy_pass http://frontends;
        }
    }
}

安装：

使用supervisor做进程管理，使用Nginx做反向代理；supervisor可以使用源码安装和yum安装(CentOS)，使用pip安装和源码安装是一样的道理：

sudo pip install supervisor

supervisor默认会从(/usr/local/etc/supervisord.conf, /usr/local/supervisord.conf, supervisord.conf, etc/supervisord.conf, /etc/supervisord.conf)寻找配置文件，为了方便，我们生成配置文件并修改后，链接到/etc/supervisord.conf。
生成配置文件：

echo_supervisord_conf > /a/path/etc/supervisord.conf

按示例修改，修改后链接到指定位置：

sudo ln -s /a/path/etc/chnservices.conf /etc/chnservices.conf

将Nginx配置文件修改后链接到默认位置：

sudo ln -s /a/path/etc/nginx/nginx.conf /etc/nginx/nginx.conf

使Nginx中设置的静态目录与项目的静态目录保持一致：

ln -s  /a/path/chnservices /var/www/tornado

启动supervisor:

sudo supervisord -c /etc/supervisord.conf
sudo supervisorctl start all
sudo supervisorctl reload all
sudo supervisorctl restart all

此时，浏览器访问http://127.0.0.1:8001/和http://127.0.0.1:8002/应该就可以看到“Hello, world”了.
启动nginx：

sudo service nginx restart

此时，浏览器访问http://127.0.0.1:8000/就可以看到从tornado经nginx的“Hello, world”了.

添加开机启动：

tornado代码遇到异常退出时supervisor会自动重新启动我们的python代码，但是现在supervisor不是开机启动的，编辑/etc/rc.local， 在exit 0之前添加sudo supervisord即可。