python - pip-installed uWSGI ./python_plugin.so error

32
votes

I've installed uWSGI using pip and start it up with an XML to load my application. The XML config contains <plugin>python</plugin>. On my new server it leads to an error:

open("./python_plugin.so"): No such file or directory [core/utils.c line 3321]
!!! UNABLE to load uWSGI plugin: ./python_plugin.so: cannot open shared object file: No such file or directory !!!

I can find the .c and the .o versions:

sudo find / -name 'python_plugin.c'
/srv/www/li/venv/build/uwsgi/build/uwsgi/plugins/python/python_plugin.c
/srv/www/li/venv/build/uwsgi/plugins/python/python_plugin.c
sudo find / -name 'python_plugin.o'
/srv/www/li/venv/build/uwsgi/build/uwsgi/plugins/python/python_plugin.o
/srv/www/li/venv/build/uwsgi/plugins/python/python_plugin.o
sudo find / -name 'python_plugin.so'

But no .so found. My previous system had a uwsgi install through apt-get, but that's really old (and I'm quite sure it uses the pip installed uwsgi normally, but maybe not for shared objects then?)

Some background info:

  • Ubuntu 12.0.4 LTS
  • Python 2.7 (virtualenv)
  • I've installed uWSGI in my venv, using the normal pip install uwsgi (no sudo)

So I'm a tad clueless :( I can't be the only person in the world to have this, right? Should I compile the .so objects myself? (If so, how?) Or is there another great solution?

5
pythonuwsgi
So... I removed the <plugin>python</plugin> from the xml file and now it loads... but I do not understand why/when it is needed. Still have to check also whether it really works now - Carst

5 Answers

51
votes

Distros should package uWSGI in a modular way, with each feature as a plugin. But when you install using language specific ways (pip, gem...) the relevant language is embedded, so you do not need to load the plugin

50
votes

For anyone that is having trouble with this, basically you need to remove lines that state your plugin from your configuration files if you change from a distro package to a pypi or gem install. I was previously using the Ubuntu/Debian package for uwsgi, but it was old so I upgraded to use pip instead.

So, in my configuration .ini file, I had the following line:

plugin = python

Removing that line fixes the problem.

11
votes

Maybe you forgot this command

$ apt-get install uwsgi-plugin-python

If you're using Python3, try this command instead:

$ apt-get install uwsgi-plugin-python3
0
votes

Install all available plugins: sudo apt-get install uwsgi-plugins-all

0
votes

As of 6/2018 the yum package name was updated from uwsgi-plugin-python to uwsgi-plugin-python2 https://src.fedoraproject.org/rpms/uwsgi/pull-request/4#

The new install command is therefore yum install uwsgi-plugin-python2