LINUX+DJANGO+PYTHON+WSGI configuration Process

Configuring the Apache+mod_wsgi+django environment under Linux

(YBW 2011-09-23)

A Installation Environment

Operating system: CentOS release 5.5

Kernel version: Linux svn-168-1-11 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT (x86_64 x86_64 x86_64 gnu/linux

Python version:python 2.4.3

Apche version:httpd-2.2.3

Mod_wsgi version:mod_wsgi-3.2-1.el5.x86_64.rpm

Django version:Django-1.2.4

Two Software Installation

Python uses the default rpm installation path

Install Apache:

Yum–y install httpd (httpd-2.2.3-53.el5.centos.1.x86_64.rpm)

Install mod_wsgi:

RPM–IVH mod_wsgi-3.2-1.el5.x86_64.rpm

To install Django:

TAR–ZXVF django-1.2.4.tar.gz

CD Django-1.2.4

Python setup.py Install

Installing MYSQLDB

Wget-q http://peak.telecommunity.com/dist/ez_setup.py

wget Http://pypi.python.org/packages/2.4/s/setuptools/setuptools-0.6c11-py2.4.egg

Python ez_setup.py

TAR–ZXVF mysql-python-1.2.3.tar.gz

CD mysql-python-1.2.3

Python setup.py Build

Python setup.py Install

Successful Installation verification:

Shell> python

Python 2.4.3 (#1, May 5 2011, 16:39:10)

[GCC 4.1.2 20080704 (Red Hat 4.1.2-50)] on linux2

Type "Help", "copyright", "credits" or "license" for more information.

>>> Import Django

>>> Django. VERSION

(1, 2, 4, ' final ', 0)

>>> Import MySQLdb

>>>

Shell>ls/etc/httpd/conf.d

proxy_ajp.conf README welcome.conf wsgi.conf

Shell> ls/etc/httpd/modules/| grep Mod_wsgi

Mod_wsgi.so

Three Project deployment

1. Packaging Compression Development code :d ajie.zip

2. upload to server and unzip to directory /var/www/html

Shell> ls/var/www/html/

Dajie

3. Modify The apche configuration file httpd.conf

Shell> vi/etc/httpd/conf/httpd.conf

# # # at the end add the following content

<virtualhost *:80>

ServerName mice.operation.dajie-inc.com

Documentroot/var/www/html/dajie

Wsgiscriptalias//var/www/html/dajie/apache/django.wsgi

<directory/>

Order Deny,allow

Allow from all

</Directory>

<Directory/apache>

Allow from all

</Directory>

</VirtualHost>

4. Create and configure the wsgi configuration file:

Shell>cd/var/www/html/dajie

Shell>mkdir Apache

Shell>touch Django.wsgi

Shell>cat Django.wsgi

Import OS, sys

#Calculate the path based on the WSGI script.

apache_configuration= Os.path.dirname (__file__)

Project = Os.path.dirname (apache_configuration)

Workspace = Os.path.dirname (Project)

Sys.path.append (Workspace)

os.environ[' django_settings_module '] = ' dajie.settings '

os.environ[' python_egg_cache ' = '/tmp '

Import Django.core.handlers.wsgi

application = Django.core.handlers.wsgi.WSGIHandler ()

Print >> Sys.stderr, Sys.path

Shell>chmod a+x Django.wsgi

5. Modify The configuration file for the Django Project /var/www/html/dajie/settings.py, mainly in the following two places:

DATABASES = {

' Default ': {

' ENGINE ': ' Django.db.backends.mysql ',

' NAME ': ' Dajieod ',

' USER ': ' Dajieod ',

' PASSWORD ': ' dajieod123 ',

' HOST ': ' 127.0.0.1 ',

' PORT ': ' 3306 ',}

}

Template_dirs = (

# Put strings here, like "/home/html/django_templates" or "c:/www/django/templates".

# Always use forward slashes, even on Windows.

# Don ' t forget to the use of absolute paths, not relative paths.

'/var/www/html/dajie/templates ',

)

Four Start Project

Shell>service httpd Restart

Access test:

http://192.168.1.11

Project Deployment ok~

Five Problem set

1. Install mysql-python execution:python setup.py build error: Environmenterror:mysql_config not found

Method Solution: Ln-s/usr/local/mysql/bin/mysql_config/usr/local/bin/mysql_config
Link mysql_confi from your installation directory to the /usr/local/bin directory, so you can access it in any directory (or you can put it in /usr/bin )

2. Import MYSQLDB Error: Importerror:libmysqlclient_r.so.16:cannot open Shared object file:no such file or directory

Workaround: mysql/lib all so files about libmysqlclient to /usr/lib the next.
Ln-s/usr/local/mysql/lib/mysql/libmysqlclient*/usr/lib
Ldconfig
So when import MySQLdb , it won't go wrong.

3. After installing Django,mysqldb in the system environment , it is no problem to execute import , but start Apache when the browser accesses the error:

Error loading MYSQLDB module:importerror:libmysqlclient_r.so.16:cannot Open shared object file:permission denied

WORKAROUND: Here Apache Permission denied problem is caused by SELinux, close selinux can be. Close Selinux:vi/etc/selinux/config===selinux=disabled, then restart the system

(Do not restart settings Selinux:setenforce 0 view selinux:getenforce)

LINUX+DJANGO+PYTHON+WSGI configuration Process