Raspberry Pi Deployment Flask+uwsgi+nginx process

Reproduced from
Http://blackgu.blogbus.com/logs/171363164.html
Slightly modified

1) Install Flask,uwsgi,nginx

Flask:sudo Apt-get Install Python-flask

Uwsgi:sudo apt-get installuwsgi uwsgi-plugin-python

Nginx:sudo Apt-get Install Nginx

2) Create Flask Project

Here is the simplest HelloWorld to create a project catalog: MyApp, which contains the following files:

File name: myapp.py

Code:

From flask import Flask

App = Flask (__name__)

@app. Route ('/')

def hello ():

Return ' Hello world '

if __name__ = = ' __main__ ':

App.run ()

3) configuration Uwsgi

In the MyApp directory you just created, create a UWSGI XML configuration file Myapp_config.xml:

<uwsgi>

<pythonpath>[the root directory of your project]</pythonpath>

<module>[module name, here with myapp]</module>

<callable>[because the app is the portal to start the whole service, so it's app]</callable>

<socket>/tmp/uwsgi.sock</socket> #注: Here the sock file is not a ready-made file, do not need to be created in advance, the runtime will be automatically created, the file name is self-determined, the path can be self-determined

<master/>

<processes>4</processes> #注: Run a few threads, here with 4 threads

<memory-report/>

</uwsgi>

Examples:

<uwsgi>

<pythonpath>/root/workspace_aptana/mytest/src/test/uwsgi</pythonpath>

<module>myapp</module>

<callable>app</callable>

<socket>/tmp/uwsgi.sock</socket>

<master/>

<processes>4</processes>

<memory-report/>

</uwsgi>

3) Configure Nginx

Under the/etc/nginx/sites-available/directory, create a Web file profile site:

server {

Listen 80;
server_name www.myapp.com;

Location/{
Include Uwsgi_params;
Uwsgi_pass Unix:/tmp/uwsgi.sock; #注: The sock file here and the Uwsgi sock file match the same file because Nginx and UWSGI need to interact through this socket
}
}

Or, simply modify the following in the defaut.conf directly:

server {
Listen 8081;
server_name localhost;

Location/{
Include Uwsgi_params;
Uwsgi_pass Unix:/tmp/uwsgi.sock;
}
}

Then use the LN command to create a link to/etc/nginx/sites-enable/, Link's name is also called site, delete the Sites-enable directory under the default link:

sudo ln-s/etc/nginx/sites-available/site/etc/nginx/sites-enabled/( Note: This is ln's lowercase command )

sudo rm/etc/nginx/sites-enabled/default

4) Start deployment

1. Start Uwsgi, command is sudo uwsgi-x myapp_config.xml, will play a lot of words, if not loaded project success can be seen from the information, and then do not close the terminal,

2. Open a new terminal, in the inside start Nginx:sudo/etc/init.d/nginx start, and then in the browser to access the localhost (see the configured nginx in the server listening port, such as the above 8),

3 At this time if the 502 page appears, you can look at the log, my log is in/var/log/nginx/error.log, if the display is sock file because of permissions problems can not be accessed, that is, as long as the chmod command to sock file assigned permissions: chmod 777/ Tmp/uwsgi.sock, then Uwsgi and Nginx reboot again, now visit localhost to see "Hello world! ", ok!

Raspberry Pi Deployment Flask+uwsgi+nginx process