Web Server Setup for Linux
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Introduction
------------We are unsing centos.
- uname -a
Linux sfmaps_web 2.6.18.8-xenU #1 SMP Mon Aug 18 14:00:41 PDT 2008 x86_64 x86_64 x86_64 GNU/Linux
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It is important that at every step you specify the right versions.
Since you may have 2 version of python, its very easy to get a python component wrong.
Not that this ever happened to me.
For example, when installing mod_wsgi, if you do not explicitly specify the
right version, the default version will be used. This may cause problems
that are difficult to trouble shoot.
System Administration Essentials
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You will need a moderate amount of unix foo (fu) to do this.
If you are a real unix sys-admin, skip this section.
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In real life, there are usually variations to the above pattern,
sometimes significant variations.
Preliminaries
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Install development packages for apache httpd
- sudo yum install apr-devel.x86_64
- sudo yum install httpd-dev.x86_64
- sudo yum install glibc-common
- sudo yum install zlib-devel.x86_64
PYTHON2.5
--------- http://www.python.org/ftp/python/2.5.4/Python-2.5.4.tgz
Compile and install 2.5.4 along side what ever python version is already installed.
Using "altinstall" allows mutliple versions to be installed.
When using "altinstall" note that you must type "python2.5" and not "python" to get
the right version. Enable 4 byte unicode so it plays nice with psycopg2.
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Links http://effbot.org/pyfaq/when-importing-module-x-why-do-i-get-undefined-symbol-pyunicodeucs2.htm http://www.fishandcross.com/blog/?p=610
MOD_
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WSGI
http://modwsgi.googlecode.com/files/mod_wsgi-2.5.tar.gz
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Configure Apache to use mod_wsgi
First we need to check if apache is loading mod_python, search the httpd configs in /etc/httpd/
recursively for the string "python_module". If this module is loaded, commented comment it out.
In the main httpd config file: /etc/httpd/httpd.conf, include the eas config file mad.htconf.
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Links http://code.google.com/p/modwsgi/
PSYCOPG2
-------- http://initd.org/psycopg/tarballs/PSYCOPG-2-0/psycopg2-2.0.12.tar.gz
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- sudo python2.5 setup.py install
Take great care here to use the right version of python.
Note that this was ever an issue for me.
links http://initd.org/
GEOS
http://download.osgeo.org/geos/geos-3.1.1.tar.bz2
preliminary
- yum install gcc-c++
- sudo yum install python-devel (to support python bindings)
- sudo yum install swig (to support python bindings)
install
- ./configure (or ./configure --enable-python)
- ./make (or just make)
- sudo ./make install
links http://geodjango.org/docs/install.html
PROJ.4
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A bit unusual; follow these instructions:
http://geodjango.org/docs/install.html#proj4
links http://geodjango.org/docs/install.html
GDAL
http://download.osgeo.org/gdal/gdal-1.6.2.tar.gz
http://geodjango.org/docs/install.html
Without GDAL, geodjango wfs does not work.
We build without the gdal python bindings because geodjango has its own.
The install is bog standard; make takes a good while.
- ./configure ./configure --with-python
- make
- sudo make install links http://geodjango.org/docs/install.html
DJANGO
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Since this is pure python, you can copy this into the python site-packages.
Or install as you see fit.
- sudo python2.5 setup.py install
JOGGING
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Download Jogging v0.2.2 http://github.com/zain/jogging/zipball/v0.2.2
or
Http://github.com/zain/jogging/tarball/v0.2.2
in Windows: unzip file, copy the content folder called "jogging" to C:\Python25\Lib\site-packages or /usr/local/lib/python2.5/site-packages
in Linux: get gz file, unzip, untar, then run from jogging directory: $ python2.5 setup.py install
For the Change Notification process, the xmit_daemon.py script uses a system variable called MAD_HOME.
MAD_HOME is set by xmit_change_notifications.bsh; it must point to the path where the web application is deployed.
MAD_HOME is used to access the django settings.py.
This daemon process runs outside of the web server.
ADMIN
You want to make sure the web server starts on reboot.
To accomplish this:
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