uWSGI is a high-performance web application server that can be used to deploy Python, Ruby, PHP, and Node.js web applications. In this tutorial, we will learn how to install uWSGI on Clear Linux Latest.
Before we begin, make sure that you have:
uWSGI has a few dependencies that need to be installed first. To install them, open your terminal and execute the following command:
sudo swupd bundle-add devpkg-libpcre devpkg-openssl openssl
sudo pip3 install uwsgi
The above command will install the required dependencies and the uWSGI server.
To test if uWSGI is correctly installed, we will set up a simple Python application. Create a new file called hello.py and paste the following code into it:
def application(env, start_response):
start_response('200 OK', [('Content-Type','text/html')])
return [b"Hello World"]
This code creates a Python function that returns a "Hello world" message when accessed.
To test uWSGI, we need to start uWSGI and tell it to use our test application. To do this, execute the following command:
uwsgi --http :8000 --wsgi-file hello.py
This command starts the uWSGI server and tells it to listen on port 8000 and use the hello.py file as the entry point for our application.
You can check if the test application is working or not by opening your browser and navigating to http://localhost:8000. You should see "Hello world" displayed in your browser.
If you want to run multiple uWSGI instances simultaneously, you need to configure uWSGI in emperor mode. In emperor mode, uWSGI will automatically start and stop its worker processes according to the configuration files stored in a directory.
To run uWSGI in emperor mode, create a directory, let's say /etc/uwsgi, and create a configuration file for your application. For example, you can create a file called myapp.ini in the uwsgi directory with the following content:
[uwsgi]
http = :8000
wsgi-file = /path/to/your/application.py
Replace /path/to/your/application.py with the path to your own application.
Now run uwsgi in emperor mode with the following command:
uwsgi --emperor /etc/uwsgi
This command tells uWSGI to start monitoring the /etc/uwsgi directory and automatically start and stop worker processes according to the configuration files present in it.
In this tutorial, we learned how to install uWSGI on Clear Linux Latest and test it with a simple Python application. We also learned how to run uWSGI in emperor mode to enable concurrent execution of multiple uWSGI applications.
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