[OSM-dev] Need help with Mapnik error message: UserWarning: Could not create datasource. No plugin found for type 'postgis' in layer 'leisure'

[Ralf Zimmermann]

I spent a whole day on setting up a virtual machine with Debian 4.0 r5 with 
Mapnik and posgres-postgis. My goal is to render my own tiles for a project.

At the moment it looks like I have a working postgis install, populating the 
database with osm2pgsql seems to work fine - it shows me Node, Way and Relation 
stats at the end of that run. No error messages.

But when I run Mapnik, I am stuck right now. I googeled for a while but really 
found nothing that gave me an idea of what is going wrong.

Here is the error message (I re-typed it from the screen - so there might be a 
typo somewhere) from generate_tiles.py:
---------------------------
mapnik at debian:~/mapnik$ ./generate_tiles.py
render_tiles( (11.4, 48.07, 11.699999999999999, 48.219999999999999) 
/home/mapnik/mapnik/osm.xml /home/mapnik/mapnik/tiles/ 1 12 Muenchen )

Traceback (most recent call last):
   File "./generate_tiles.py", line 135, in ?
     render_tiles(bbox, mapfile, tile_dir, 1, 12, "Muenchen")
   File "./generate_tiles.py", line 53, in render_tiles
     load_map(m,mapfile)
UserWarning: Could not create datasource. No plugin found for type 'postgis' in 
layer 'leisure'
mapnik at debian:~/mapnik$
---------------------------

Does anyone have a quick idea what I am doing wrong here? I think I am almost 
where I want to be - feels like it is only a little thing missing now.

Any hints would be welcome. My Linux skills are not that super.

RalfZ
Munich, Germany


I have run "strace ./generate_tiles.py 2>&1 | grep input" as I have seen it in 
another post where somebody had a similar issue. My problem is that I have no 
idea if this should tell me anything useful for my problem. Ich checked that the 
files mentioned below do exist.

stat64("/usr/local/lib/mapnik/input", {st_mode=S_IFDIR|S_ISGID|0755, 
st_size=4096, ...}) = 0
stat64("/usr/local/lib/mapnik/input", {st_mode=S_IFDIR|S_ISGID|0755, 
st_size=4096, ...}) = 0
open("/usr/local/lib/mapnik/input", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_DIRECTORY) = 4
stat64("/usr/local/lib/mapnik/input/shape.input", {st_mode=S_IFREG|0755, 
st_size=203855, ...}) = 0
open("/usr/local/lib/mapnik/input/shape.input", O_RDONLY) = 5
stat64("/usr/local/lib/mapnik/input/raster.input", {st_mode=S_IFREG|0755, 
st_size=68289, ...}) = 0
open("/usr/local/lib/mapnik/input/raster.input", O_RDONLY) = 5