[Tilecache] Re solutions issues
Yves Moisan
yves.moisan at boreal-is.com
Fri Nov 21 14:19:18 EST 2008
Salut Éric,
Thanx for the pointer. Googling around, I found this : "Note that these
directives shouldn't be required on the Windows platform as it
uses the Windows registry to find where the Python library files are
located". The "directives" in question are all the variety of
PythonPath, pythonhome and what not one can stick in a .conf file. In
fact, that sentence should read "whatever you do in your conf files,
Apache will only listen to your system registry".
Sure enough, when I pointed my REGISTRY PythonPath variable
to ...\Python24;...\Python24\Lib;...\Python24\DLLs where ... is my local
Python path everything worked.
Oh and back on the Tilecache.cgi comment I made in an earlier post. I
want to underscore a couple of findings of mine that might be useful to
others. I mentioned earlier that we have 2 map implementations : one OL
and another called pmapper (a PHPMapscript) that we want to replace with
OL. Pmapper is faster than OL to render a non-tiled GeoTiff image. It
is *also* faster than OL with TC/cgi! But now I know it is much slower
than OL with TC/mod_python. All TC implementations are really not
alike.
Yves
Le vendredi 21 novembre 2008 à 19:10 +0100, Eric Lemoine a écrit :
> Yves, have you tried setting PYTHONHOME in the Apache config? Eric
>
> 2008/11/21, Yves Moisan <yves.moisan at boreal-is.com>:
> > Chris,
> >
> > I half solved my issue. Here goes -- windows users listen ;-) -- :
> >
> > I installed mod_python with the windows installer. Since the Python I
> > use is *not* the system Python (C:\Python24), I had to manually edit the
> > registry so that files are copied in the right site-packages dir.
> > (Turns out you don't really need to do that : just copying the
> > site-packages mod_python dir to your local Python does the trick; see
> > below). The thing is, Apache still looks for files in my system Python
> > and of course it won't find mod_python in the system Python
> > site-packages because files were written to may local Python. To test,
> > I copied the mod_python dir into in my system Python site-packages dir
> > and ... Bingo. Indeed, the speed difference is staggering. Please
> > all : do not use tilecache.cgi (my humble recommendation) !
> >
> > Now, my problem is half-solved because I still can't get Apache to look
> > for the mod_python files on my "local" Python. I set a system
> > PYTHONPATH variable to point to my local Python and tried PassEnv
> > PYTHONPATH to Apache to no avail. It still wants the files on my system
> > Python. I tried setting PYTHONPATH to include also the site-packages
> > dir, both as an environment variable and in the registry to no avail.
> > Any Apache wizs ?
> >
> > Oh and how I came to do that I owe to this post :
> > http://www.mail-archive.com/python-dev@httpd.apache.org/msg01795.html,
> > section on "make_obcallback: could not import mod_python.apache" where
> > there is a mention how multiple Pythons on windows may lead to
> > mod_python issues.
> >
> > Cheers,
> >
> > Yves
> >
> > Le vendredi 21 novembre 2008 à 10:42 -0500, chris marx a écrit :
> >> I'm not an apache wiz, this is the first time i've installed it. i
> >> would forget about trying to run the tilecache, and just focus first
> >> on getting apache and mod_python installed correctly. what version of
> >> apache are you trying to run? is it a windows box or linux? which
> >> python installer did u use, and what version of python do you have
> >> installed?
> >>
> >> On Fri, Nov 21, 2008 at 10:33 AM, Yves Moisan
> >> <yves.moisan at boreal-is.com> wrote:
> >> Chris,
> >>
> >> I mentioned I had seen a comment to the effect TC wasn't
> >> working with
> >> 3.3.1. In fact, reading that comment just gave me the idea to
> >> try and
> >> downgrade mod_python and see if Apache would start then, which
> >> proved to
> >> be OK. So I'm not going to run TC with 3.3.1 because Apache
> >> 2.0.54
> >> won't take it, not because TC won't take it ( I can't try it
> >> out for
> >> obvious reasons).
> >>
> >> I can't get to http://mymachine/tilecache/tilecache.py.
> >> Looking at the
> >> how to you point to, I wonder why I need to run a setup ? I
> >> need to
> >> find out why I can't get tilecache.py to load first I guess.
> >>
> >> Thanx,
> >>
> >> Yves
> >> Le vendredi 21 novembre 2008 à 09:51 -0500, chris marx a
> >> écrit :
> >>
> >> > tilecache definitely works with 3.3.1, i just got it going
> >> on that
> >> > last night. did you see this great blog post?
> >> >
> >> >
> >>
> >> http://oegeo.wordpress.com/2008/03/10/tilecache-on-windows-part-2-mod_python/#comment-84
> >> >
> >> > it appears that the tilecache files have been updated, i
> >> didnt even
> >> > need to make the change on line 33-
> >> > chris-
> >> >
> >> > On Fri, Nov 21, 2008 at 9:43 AM, Yves Moisan
> >> > <yves.moisan at boreal-is.com> wrote:
> >> > > compared to mod_python which has a fairly
> >> fire-and-forget
> >> > install
> >> > > under apache.
> >> >
> >> >
> >> > Well not under windows ... First thing I did is try
> >> to
> >> > install
> >> > mod_python 3.3.1 (currently the latest mod_python)
> >> for Python
> >> > 2.4 and
> >> > Apache 2.0.x. Apache wouldn't start. Logs were not
> >> obvious.
> >> > Anyway I
> >> > came across a post that mentioned TC didn't work
> >> with 3.3.x so
> >> > I went
> >> > and installed the latest 3.2 (3.2.7). Now Apache
> >> works.
> >> >
> >> > Following the TC readme file, I add the required
> >> bits in
> >> > httpd.conf :
> >> >
> >> > <Directory "...apache2php521/tilecache-2.03/">
> >> > AddHandler python-program .py
> >> > PythonHandler TileCache.Service
> >> > PythonOption TileCacheConfig
> >> > ".../apache2php521/tilecache-2.03/tilecache.cfg"
> >> > </Directory>
> >> >
> >> > Ellipsis for short.
> >> >
> >> > Then I change tilecache.cgi for tilecache.py in my
> >> html file :
> >> >
> >> > var Ikonos_TC = new OpenLayers.Layer.WMS(
> >> > "Ikonos",
> >> > "http://" + SERVER_BASE_URL +
> >> >
> >> ":8292/tilecache/tilecache.py?map=.../mymapfile.map",
> >> > {layers: 'Ikonos',
> >> > transparent: false,
> >> > singleTile: false,
> >> > srs: 'EPSG:29194',
> >> > format: 'image/jpeg'},
> >> > {isBaseLayer: true,
> >> > buffer:0,
> >> > transitionEffect:'resize'});
> >> >
> >> >
> >> > I get pink tiles. Pasting the address of one in a
> >> new tab, I
> >> > get :
> >> >
> >> > Internal Server Error
> >> > The server encountered an internal error or
> >> misconfiguration
> >> > and was
> >> > unable to complete your request.
> >> >
> >> > Please contact the server administrator ...
> >> >
> >> >
> >>
> >> ________________________________________________________________________
> >> > Apache/2.0.54 (Win32) mod_python/3.2.7 Python/2.4.4
> >> PHP/5.2.1
> >> >
> >> > Apache log says :
> >> >
> >> > [Fri Nov 21 09:16:16 2008] [error] make_obcallback:
> >> could not
> >> > import
> >> > mod_python.apache.\n
> >> > [Fri Nov 21 09:16:16 2008] [error] python_handler:
> >> no
> >> > interpreter
> >> > callback found.
> >> > [Fri Nov 21 09:16:16 2008] [error] [client
> >> 192.168.5.186]
> >> > python_handler: Can't get/create interpreter.,
> >> referer: ...
> >> >
> >> > I installed mod_python as per instructions so I'm
> >> clueless as
> >> > to what to
> >> > do next. Tilecache.cgi worksbut .py doesn't. Or do
> >> I have to
> >> > move all
> >> > the TC code in htdocs ?
> >> >
> >> > TIA,
> >> >
> >> > YVes
> >> >
> >> >
> >> >
> >> >
> >> > _______________________________________________
> >> > Tilecache mailing list
> >> > Tilecache at openlayers.org
> >> > http://openlayers.org/mailman/listinfo/tilecache
> >> >
> >> >
> >> >
> >> >
> >> > --
> >> >
> >> > Chris Marx
> >> > Programmer/Analyst
> >> > Cornell Lab of Ornithology
> >> > 159 Sapsucker Woods Rd.
> >> > Ithaca, NY 14850
> >> > t. 1.607.254.1142
> >> > http://www.birds.cornell.edu/
> >>
> >>
> >>
> >>
> >>
> >> --
> >>
> >> Chris Marx
> >> Programmer/Analyst
> >> Cornell Lab of Ornithology
> >> 159 Sapsucker Woods Rd.
> >> Ithaca, NY 14850
> >> t. 1.607.254.1142
> >> http://www.birds.cornell.edu/
> >
> > _______________________________________________
> > Tilecache mailing list
> > Tilecache at openlayers.org
> > http://openlayers.org/mailman/listinfo/tilecache
> >
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