.. _kernel-installation-centos: CentOS ====== :Authors: Nicolas Bozon, GĂ©rald Fenoy, Jeff McKenna :Last Updated: $Date: 2011-08-11 17:05:38 +0000 (Thu, 11 Aug 2011) $ .. contents:: Table of Contents :depth: 2 :backlinks: top .. note:: This documentation was created thanks to Guillaume Sueur from Neogeo Technologies which took time to test installing the ZOO-Kernel on a CentOS 5.5 environment. Requirements ------------ Install some standard tools to be able to run ZOO-Kernel on your platform : :: yum install apache2 yum install build-essentials yum install gcc-c++ yum install zlib-devel yum install libxml2-devel yum install bison yum install openssl yum install python-devel yum install subversion Compile then install FastCGI library from source :: wget http://www.fastcgi.com/dist/fcgi.tar.gz tar xzf fcgi-2.4.0.tar.gz ./configure make make install echo /usr/local/lib >> /etc/ld.so.conf.d/local.conf ldconfig Compile then install the autoconf tools : :: wget http://ftp.gnu.org/gnu/autoconf/autoconf-latest.tar.gz tar xzf autoconf-latest.tar.gz ./configure --prefix=/usr make make install Compile then install the flex tool : :: wget http://downloads.sourceforge.net/project/flex/flex/flex-2.5.35/flex-2.5.35.tar.gz?r=http%3A%2F%2Fflex.sourceforge.net%2F&ts=1292529005&use_mirror=switch tar xzf flex-2.5.35.tar.gz cd flex-2.5.35 ./configure --prefix=/usr make make install Using the curl provided in the CentOS distribution will produce a ZOO-Kernel unable to run any Service. Indeed, some segmentation faults occur when trying to run ``Execute`` requests on the ZOO-Kernel, compiling the ZOO-Kernel setting ``USE_GDB`` flag in the ``CFLAGS`` of your ``Makefile`` will let you run ZOO-Kernel from gdb and be able to get more information on what is going wrong with your ZOO-Kernel. Doing this we can figure out that code on `line 173 `__ and `line 175 `__ have to be commented in the ``ulinet.c`` file to get a ZOO-Kernel working using the curl available in CentOS (curl version 7.15.5). If you don't apply the modification, you will get an error from a gdb session pointing segfault in ``Curl_cookie_clearall``. You can optionally compile then install curl from source : :: wget http://curl.haxx.se/download/curl-7.21.3.tar.bz2 tar xjf curl-7.21.3.tar.bz2 cd curl-7.21.3 ./configure --prefix=/usr make make install Compile then install Python : :: wget http://www.python.org/ftp/python/2.6.6/Python-2.6.6.tar.bz2 tar xjf Python-2.6.6.tar.bz2 cd Python-2.6.6 ./configure make make install Compile then install your own GDAL library : :: wget http://download.osgeo.org/gdal/gdal-1.7.3.tar.gz tar xzf gdal-1.7.3.tar.gz cd gdal-1.7.3 ./configure # add your options here make make install Install the Sun JAVA SDK into ``/usr/share`` then use the following command to ensure that the ``libjvm.so`` will be found at runtime from any context. :: echo /usr/share/java-1.6.0-openjdk-1.6.0.0/jre/lib/i386/client/ >> /etc/ld.so.conf.d/jvm.conf ldconfig Compile ZOO-Kernel and ZOO-Services ----------------------------------- Compile then install ZOO-Kernel and your first ZOO-Services. First of all, compile the cgic library providen in the SVN source tree: :: svn co http://svn.zoo-project.org/svn/trunk zoo-project cd zoo-project/thirds/cgic206 make Compile then install ZOO-Kernel. :: cd ../../zoo-kernel ./configure --with-java=/usr/share/jdk1.6.0_23/ --with-python make zoo_loader.cgi cp main.cfg /var/www/cgi-bin/ cp zoo_loader.cgi /var/www/cgi-bin/ Compile then deploy your first ZOO-ServicesProviders (simple HelloPy, line 1 and 2, and the OGR base-vect-ops ServiceProvider, line 3 to 6): :: cp ../zoo-services/hello-py/cgi-env/*.zcfg /var/www/cgi-bin/ cp ../zoo-services/hello-py/test_service.py /var/www/cgi-bin/ cd ../ogr/base-vect-ops/ make cp ./cgi-env/* /var/www/cgi-bin/ vi /var/www/cgi-bin/main.cfg --> set your own informations here To ensure that the ``libjvm.so`` will be found from apache, please restart it : :: /etc/init.d/httpd restart Testing your ZOO-Kernel ----------------------- Test your ZOO-Kernel from command line: :: cd /var/www/cgi-bin ./zoo_loader.cgi "request=Execute&service=WPS&version=1.0.0&Identifier=HelloPy&DataInputs=a=Djay" ./zoo_loader.cgi "request=Execute&service=WPS&version=1.0.0&Identifier=Buffer&DataInputs=BufferDistance=1@datat