Wednesday, March 7th, 2012

Completed server migration

I just completed my server migration, a server full of Django apps, to a new server over the past few hours.

I needed to migrate to a new server due to a network latency issue on my Rackspace Cloud server. It was degrading the upstream network performance. Meaning some of my sites tended to time-out during longer requests, and updating the Linux packages was a pain, as it took forever.

It didn't all end bad though, in the process of the migration, I upgraded the version of nginx I am using, and instead of using FastCGI, I went for uWSGI using Fastrouter and a few other goodies uWSGI has to offer. I would completely recommend reading Jeremy Bowers | Django, Nginx and uWSGI in production, as it explains how to get up and running with uWSGI rather quickly on most Linux platforms. I used part of this tutorial, and a custom options from uWSGI to tailor it to my needs.

What is your preferred way of hosting Python web applications?

Comment #1: Posted 2 years, 9 months ago by Samat

Never really understood the benefits of µWSGI… other than it can operate in a language-agnostic manner, why would you use it over plain old WSGI?

Comment #2: Posted 2 years, 9 months ago by George Kappel

Just did nginx and uwsgi setup for an upcoming beta test

For nginx if you use SSL, the following makes a big diff
ssl_ciphers HIGH:!kEDH!aNULL:!MD5; #excluding DH Ephemeral for performance reasons

To make sure things are aok the following free load testing tool is pretty helpful
http://blitz.io/

Comment #3: Posted 2 years, 9 months ago by roberto

@Samat the name 'uWSGI' is the most unfortunate choice ever. for tons of reasons. uWSGI is an application server, uwsgi is a communication protocol (the one supported by nginx) and WSGI is one of the standard it supports. So, uWSGI is not a substitute for WSGI, is an implementation of it.

Comment #4: Posted 2 years, 9 months ago by Kevin Veroneau

Hello Samat. Thank you for the comment. uWSGI has some very powerful features which are not available in standard server configurations. I would recommend looking at their Examples page, especially the example labeled "Massive Django hosting with automagic config and lower resource impact", it explains how a hosting provider can easily provide Django hosting with minimal server configuration. FastRouter is definitely a selling point of uWSGI.

Comment #5: Posted 2 years, 9 months ago by hlynr

I strongly suggest reading this: http://blog.dscpl.com.au/2009/05/blocking-requests-and-nginx-version-of.html

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