First off, I’m biased against old, slow, antiquated package management systems. Yes
yum, I’m talking about you. Not only is
yum horrible, but the default repositories are completely filled with out of date packages.
yum itself depends on Python 2.4, which was released way back in November 2004. What version would I like to use? Avoiding my love of the bleeding edge I would say 2.7 would be an adequate version, especially for our Django1 / MongoDB2 backed API. Here we will list the steps required to create a fully functional installation of Python 2.7, latest Django (development), and PyMongo.
Installing Python 2.7 on CentOS
First off you need to recognize
yum‘s dependency on Python 2.4. Simply replacing this will break your passing semblance of a package manager. We will be using this later so not breaking is the preferred path. Python versions can live in relative harmony together. Download the Python source and untar it to some directory. I use
~/source for all of my non-native additions. You can choose whatever you want.
[root@server]$ tar -xf Python-2.7.1.tgz [root@server]$ yum install gcc [root@server]$ ./configure [root@server]$ make [root@server]$ make altinstall
altinstall part is key, as it will resist installing the binary to the default
/usr/bin/python path, overriding the needed 2.4 version of Python. On my CentOS installation it put it in
/usr/local/bin/python2.7. Now you have a fully functional installation of Python residing happily on your system. It should be accessible by using
python2.7 wherever you use
[root@server]$ python Python 2.4.3 (#1, Nov 11 2010, 13:30:19) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>>
Installing Django 1.3 beta 1 on CentOS with Python 2.7
Installing Django is a trivial step after that. Simply grab your desired version, unpack the tar, and run
setup.py with your alternate
[root@server]$ tar -xf Django-1.3-beta-1.tar.gz [root@server]$ cd Django-1.3-beta-1/ [root@server]$ python2.7 setup.py install
You can check your Django installation as well:
[root@server]$ python2.7 Python 2.7.1 (r271:86832, Feb 4 2011, 11:30:52) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import django >>> django.get_version <function get_version at 0x2ae6ecd82c80> >>> django.get_version() '1.3 beta 1' >>>
Easy parts are now out of the way
Installing PyMongo on CentOS under Python 2.7
There is a
pymongo package for CentOS available under
yum. The only downside is it will by default install to the
/usr/lib64/python2.4/site-packages location instead of our new Python 2.7 location. That’s okay though, we can deal with that after the fact.
[root@server]$ yum install pymongo.x86_64 [root@server]$ cp -R /usr/lib64/python2.4/site-packages/pymongo /usr/local/lib/python2.7/site-packages/ [root@server]$ cp -R /usr/lib64/python2.4/site-packages/bson /usr/local/lib/python2.7/site-packages/
You have to copy both the
bson folder to your new Python installation.
That’s it, you should now have a better version of Python (2.7), Django, and PyMongo all living happily on your shitty CentOS box. Want to not waste time with this? Use Ubuntu 10.04 LTS and do everything with aptitude.