python – uwsgi / nginx上的Flask应用程序 – 在启动时不会创建unix套接字文件

我正在尝试在uwsgi / Nginx上使用Flask应用程序.

以下
http://uwsgi-docs.readthedocs.org/en/latest/tutorials/Django_and_nginx.html
和
http://www.markjberger.com/flask-with-virtualenv-uwsgi-nginx/,我可以制作wiki.ini文件,

[uwsgi]
vhost = true
socket = /tmp/flask_app.sock
venv = /home/ubuntu/webapp/flask/hello/.env
chdir = /home/ubuntu/webapp/flask/hello
module = flaskapp
callable = app
chmod-socket = 666

我检查了wiki.ini文件与uwsgi –ini wiki.ini一起正常工作.

然后,我尝试在启动时启动Flask应用程序.

从sudo update-rc.d uwsgi enable,我可以在启动时启动uwsgi服务,并将wiki.ini文件复制到/ etc / uwsgi / apps-enabled目录中.

这是Nginx的conf文件.

server {
    listen       80;
    server_name wiki.example.com;
    access_log  /var/log/Nginx/uwsgi_access.log;
    error_log /var/log/Nginx/uwsgi_error.log;

    location / { try_files $uri @riki; }
    location @riki {
        include uwsgi_params;
        uwsgi_pass unix:/tmp/flask_app.sock;
    }

    error_page  404              /404.html;
}

但是,当我重新启动我的ubuntu服务器时,Flask应用程序无法运行.
我检查了错误日志以找到此错误消息.

2015/11/07 17:48:17 [crit] 1055#0: *1 connect() to 
unix:/tmp/flask_app.sock Failed (2: No such file or directory) 
while connecting to upstream, client: 68.203.30.28, server: wiki.example.com,

我创建了/tmp/flask_app.sock文件并运行chown -R www-data：www-data /tmp/flask_app.sock以使应用程序正常工作.

> touch /tmp/flask_app.sock
> sudo chown www-data:www-data /tmp/flask_app.sock 
> sudo service uwsgi restart
> sudo service Nginx restart

但是,我有另一个连接拒绝错误.

2015/11/07 17:50:38 [error] 1055#0: *4 connect() to 
unix:/tmp/flask_app.sock Failed (111: Connection refused) while 
connecting to upstream, client: 68.203.30.28, 
server: wiki.example.com, request: "GET / HTTP/1.1", 
upstream: "uwsgi://unix:/tmp/flask_app.sock:", host: "wiki.example.com"

可能有什么问题？如何教uwsgi创建unix域套接字？另外,如何使连接工作？我使用的是ubuntu 14.04.

编辑

删除/tmp/flask_app.sock并运行uwsgi –ini /etc/uwsgi/apps-enabled/wiki.ini使应用程序正常工作.

解决方法:

主要问题似乎来自uwsgi服务;它只是不起作用.

我找到了另一种在启动时启动uwsgi的方法：upstart和uwsgi –emperor来自http://uwsgi-docs.readthedocs.org/en/latest/Upstart.html和http://upstart.ubuntu.com

该过程只是在/ etc / init目录中创建一个flask.conf文件. uwsgi –emperor控制uwsgi目录中的所有ini文件.

# simple uWsgi script
# http://uwsgi-docs.readthedocs.org/en/latest/Upstart.html

description "uwsgi tiny instance"
start on runlevel [2345]
stop on runlevel [06]

respawn

exec uwsgi --emperor /etc/uwsgi/apps-enabled

我还必须sudo update-rc.d uwsgi disable,以便禁用uwsgi服务.

我也发现这个网站http://flaviusim.com/blog/Deploying-Flask-with-nginx-uWSGI-and-Supervisor/在启动时调用uswgi,但我没有测试它.