Release 1.1.1 - Upgrade Web Server (archive)
This page describes how we upgraded libraries on the web server.
This page describes the original installs.
We decided against using python virtualenv on the web servers.
Since we are using mod_wsgi, if we wanted to use different version of python,
we would have to recompile mod_wsgi against that version of python.
virtualenv does not help with this issue and it adds a bit of complexity so decided to go without it.
install python 2.7.3
cd /usr/local/src sudo mkdir TARFILES sudo chown -R dev . cd TARFILES wget http://python.org/ftp/python/2.7.3/Python-2.7.3.tgz # ... some stdout cd .. tar xvfz TARFILES/Python-2.7.3.tgz cd Python-2.7.3 sudo yum install openssl-devel readline-devel ImageMagick sqllite-devel \ bzip2-devel gdbm-devel ncurses-devel curses-devel # ... lots of stdout ./configure --prefix=/usr/local/python27 --enable-shared --with-threads make sudo make install # make sure it runs /usr/local/python27/bin/python2.7 # Now, if you get errors about not being able to find libpython2.7.so.1.0, # add this # /usr/local/python27/lib # to this file # /etc/ld.so.conf.d/python2.7.conf # then run: sudo /sbin/ldconfig # again - make sure it runs /usr/local/python27/bin/python2.7 # if you want to reinstall, you can simply remove the old install this way rm -rf /usr/local/python27 # and the install it again Â
upgrade mod_wsgi
cd /usr/local/src/TARFILES wget http://modwsgi.googlecode.com/files/mod_wsgi-3.3.tar.gz cd ../ tar xvfz TARFILES/mod_wsgi-3.3.tar.gz cd mod_wsgi-3.3 ./configure --with-python=/usr/local/python27/bin/python make sudo make install
upgrade psycopg2
cd /usr/local/src/TARFILES/ wget http://www.psycopg.org/psycopg/tarballs/PSYCOPG-2-4/psycopg2-2.4.5.tar.gz cd ../ tar xvfz TARFILES/psycopg2-2.4.5.tar.gz cd psycopg2-2.4.5/ sudo /usr/local/python27/bin/python2.7 setup.py install /usr/local/python27/bin/python2.7 # echo should be as follows # Python 2.7.3 (default, May 16 2012, 09:40:25) # [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 # Type "help", "copyright", "credits" or "license" for more information. # check your work # >>> import psycopg2 # >>> psycopg2.__version__ # stdout should be # '2.4.5 (dt dec pq3 ext)'Â # # >>> exit()
upgrade proj.4
# find and remove old proj libraries (?) sudo find / -name "*proj*" sudo find / -name "*proj*" | grep -v eas_ | grep -v Python-2 | grep -v usr\/local\/src | grep -v \.gz | grep -v django # etc cd /usr/local/lib ls -l sudo rm libproj.so.0.6.6 # cd /usr/local/src/TARFILES wget ftp://ftp.remotesensing.org/proj/proj-4.8.0.tar.gz wget ftp://ftp.remotesensing.org/proj/proj-datumgrid-1.5.tar.gz cd ../ tar xvfz TARFILES/proj-4.8.0.tar.gz cd proj-4.8.0/nad tar xvfz ../../TARFILES/proj-datumgrid-1.5.tar.gz cd .. ./configure make sudo make install
upgrade geos
# find old geos programs and libs and remove them # do this iteratively with care sudo find / -type f -name "*geos*" | grep -v src | grep -v geosilk | grep -v \.py sudo find / -type f -name "*geos*" | grep -v src | grep -v geosilk | grep -v \.py | sudo xargs rm # install new geos cd /usr/local/src/TARFILES wget http://download.osgeo.org/geos/geos-3.3.3.tar.bz2 cd .. tar xvfj TARFILES/geos-3.3.3.tar.bz2 cd geos-3.3.3 # no python bindings ./configure make sudo make install
upgrade gdal
# find old gdal and remove sudo rm -rf /usr/local/share/gdal/ # inspect output of this find... sudo find / -name "*gdal*" | grep -v 'src\|python2.5' # then pipe to xargs rm sudo find / -name "*gdal*" | grep -v 'src\|python2.5' | sudo xargs rm # cd /usr/local/src/TARFILES wget http://download.osgeo.org/gdal/gdal-1.9.0.tar.gz cd ../ tar xvfz TARFILES/gdal-1.9.0.tar.gz cd gdal-1.9.0/ # set your PATH properly so we get the right version of python export PATH=/usr/local/python27/bin:$PATH ./configure --with-python make sudo PATH=/usr/local/python27/bin:$PATH make install
upgrade django
cd /usr/local/src/TARFILES wget http://www.djangoproject.com/m/releases/1.3/Django-1.3.1.tar.gz cd ../ tar xvfz TARFILES/Django-1.3.1.tar.gz cd Django-1.3.1/ sudo /usr/local/python27/bin/python2.7 setup.py install
check your work
To make sure everything is working as expected, use set_eas_mode.sh then visit the root URL.
$ sudo ./set_eas_mode.sh SHOW_ENV
Then visit the URL of the web server and you should see something like this in the browser:
python version info: 2.7.3 (default, May 16 2012, 09:40:25) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] django version info: (1, 3, 1, 'final', 0) psycopg2 version info: 2.4.5 (dt dec pq3 ext) mod_wsgi version info: (3, 3) gdal version info: (1, 9, 0) geos version info: {'major': '3', 'subminor': '3', 'version': '3.3.3', 'capi_version': '1.7.4', 'release_candidate': None, 'minor': '3'}
If you see an internal server you probably just need to ldconfig...
sudo /sbin/ldconfig
OBSOLETE - install virtualenv 2.7
$ wget http://python-distribute.org/distribute_setup.py $ sudo /usr/local/python27/bin/python distribute_setup.py $ wget https://raw.github.com/pypa/pip/master/contrib/get-pip.py $ sudo /usr/local/python27/bin/python get-pip.py $ sudo /usr/local/python27/bin/pip install virtualenv $ sudo ln -s /usr/local/python27/bin/virtualenv /usr/local/bin/virtualenv-2.7Â
OBSOLETE - setting up a virtualenv
$ mkdir virtualenvs $ cd virtualenvs $ virtualenv-2.7 --no-site-packages --python=/usr/local/python27/bin/python python27_paul $ . ~/virtualenvs/python27_paul/bin/activate (python27)$ deactivate $
OBSOLETE - install gdal 1.8.1 into a virtualenv
$ . ~/virtualenvs/python27/bin/activate (python27_paul)$ cd /usr/local/src/gdal-1.8.1/ (python27_paul)$ ./configure --prefix=/home/dev/virtualenvs/python27_paul (python27_paul)$ make && make install (python27_paul)$ pip install --no-install GDAL==1.8.1 (python27_paul)$ vim ~/virtualenvs/python27_paul/build/GDAL/setup.py # # replace # extra_link_args = [] # with # extra_link_args = ['-Wl,-R/home/dev/virtualenvs/python27_paul/lib'] # (python27_paul)$ cd virtualenvs/python27_paul/build/GDAL (python27_paul)$ python setup.py build_ext --gdal-config=gdal-config --library-dirs=/home/dev/virtualenvs/python27_paul/lib --include-dirs=/home/dev/virtualenvs/python27_paul/include install # # confirm linked library is correct # $ ldd /home/dev/virtualenvs/python27/lib/python2.7/site-packages/GDAL-1.8.1-py2.7-linux-x86_64.egg/osgeo/_gdal.so # # should be pointing to the correct version of the libs # # if you start python in the GDAL dir, and try to import gdal you get an error # (python27_paul)$ pwd /home/dev/virtualenvs/python27_paul/build/GDAL (python27_paul)$ python Python 2.7.3 (default, May 9 2012, 14:28:18) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] ... >>> import gdal ImportError: No module named _gdal >>> exit() # # therefore do not start python in build/GDAL! # (python27_paul)$ cd ~ (python27_paul)$ pwd /home/dev (python27_paul)$ python ... >>> import gdal >>> exit() (python27_paul)$ deactivate $
OBSOLETE - email from Jeff Frost
We win! Here's how I got it to work. Recreated our virtualenv with --no-site-packages just to be clean (I don't think that was necessary, but just in case): rm -rf ~/virtualenvs/python27 virtualenv-2.6 --no-site-packages --python=/usr/local/python27/bin/python python27 . ~/virtualenvs/python27/bin/activate As you recall, we installed gdal-1.8.1 in the virtualenv like so: ./configure --prefix=/home/dev/virtualenvs/python27 --with-python make && make install Well, this time I installed it without the --with-python option: ./configure --prefix=/home/dev/virtualenvs/python27 make && make install EDIT: I decided to go back and test after creating a pristine virtualenv, and you don't have to do anything but: pip-install GDAL==1.8.1 (python27)[dev@easdevweb python27]$ python Python 2.7.3 (default, May 9 2012, 14:28:18) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import gdal >>> So, I think what happened is that allowing access to the site-packages also allowed access to the other rpaths and thus linked against the wrong gdal at runtime. Read on for more interesting info though: So, how to change the rpath for the python module? pip install --no-install GDAL==1.8.1 cd build/GDAL/ vim setup.py Just gotta add some extra_link_args. Here's a diff, so you can see what I changed: (python27)[dev@easdevweb GDAL]$ diff setup.py setup.py.orig 165c165 < extra_link_args = ['-Wl,-R/home/dev/virtualenvs/python27/lib'] --- > extra_link_args = [] python setup.py build_ext --gdal-config=gdal-config --library-dirs=/home/dev/virtualenvs/python27/lib --include-dirs=/home/dev/virtualenvs/python27/include and voila: (python27)[dev@easdevweb GDAL]$ ldd build/lib.linux-x86_64-2.7/osgeo/_gdal_array.so libgdal.so.1 => /home/dev/virtualenvs/python27/lib/libgdal.so.1 (0x00002ae0b273c000) libstdc++.so.6 => /usr/lib64/libstdc++.so.6 (0x00002ae0b329e000) libm.so.6 => /lib64/libm.so.6 (0x00002ae0b359e000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00002ae0b3822000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00002ae0b3a30000) libc.so.6 => /lib64/libc.so.6 (0x00002ae0b3c4b000) libgeos_c.so.1 => /usr/local/lib/libgeos_c.so.1 (0x00002ae0b3fa3000) libsqlite3.so.0 => /usr/lib64/libsqlite3.so.0 (0x00002ae0b41ba000) libexpat.so.0 => /lib64/libexpat.so.0 (0x00002ae0b4415000) libpq.so.4 => /usr/lib64/libpq.so.4 (0x00002ae0b4638000) libz.so.1 => /usr/lib64/libz.so.1 (0x00002ae0b485a000) librt.so.1 => /lib64/librt.so.1 (0x00002ae0b4a6e000) libdl.so.2 => /lib64/libdl.so.2 (0x00002ae0b4c78000) /lib64/ld-linux-x86-64.so.2 (0x00000039f2e00000) libgeos-3.1.1.so => /usr/local/lib/libgeos-3.1.1.so (0x00002ae0b4e7c000) libssl.so.6 => /lib64/libssl.so.6 (0x00002ae0b51dd000) libcrypto.so.6 => /lib64/libcrypto.so.6 (0x00002ae0b5429000) libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00002ae0b577a000) libcrypt.so.1 => /lib64/libcrypt.so.1 (0x00002ae0b5a10000) libresolv.so.2 => /lib64/libresolv.so.2 (0x00002ae0b5c48000) libnsl.so.1 => /lib64/libnsl.so.1 (0x00002ae0b5e5d000) libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 (0x00002ae0b6076000) libcom_err.so.2 => /lib64/libcom_err.so.2 (0x00002ae0b62a4000) libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x00002ae0b64a6000) libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 (0x00002ae0b66cc000) libkeyutils.so.1 => /lib64/libkeyutils.so.1 (0x00002ae0b68d4000) libselinux.so.1 => /lib64/libselinux.so.1 (0x00002ae0b6ad7000) libsepol.so.1 => /lib64/libsepol.so.1 (0x00002ae0b6cef000) python setup.py build_ext --gdal-config=gdal-config --library-dirs=/home/dev/virtualenvs/python27/lib --include-dirs=/home/dev/virtualenvs/python27/include install (python27)[dev@easdevweb site-packages]$ python Python 2.7.3 (default, May 9 2012, 14:28:18) [GCC 4.1.2 20080704 (Red Hat 4.1.2-48)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import gdal >>> -- Jeff Frost <jeff@pgexperts.com> CTO, PostgreSQL Experts, Inc. Phone: 1-888-PG-EXPRT x506 FAX: 415-762-5122 http://www.pgexperts.com/