Andreas, thank you very much for your time in the instructions,now the display of tiles worked properly for Berkeley databases. I have followed the instructions for the Apache Server. However, I'm using Nginx and change the permissions of the Group and user as follows:
sudo chown nginx:nginx /tmp/foo & sudo chmod - Rfv g+rwx /tmp/foo Again many thanks for your help. I have checked all types of caches, and seems to work faster with Berkeley databases. regards, Samuel Mesa. 2014-01-28 Eichner, Andreas - SID-NLKM <[email protected]> > > Andreas, thanks for the explanation about the Berkeley Database. > > However, I have made several changes of permissions and owner of the > > files produced by mapcache_seed, and I still get the same error on > > the OpenLayers demo. > > > > I don't know if others users have had the same error with Mapcache > > and Berkeley Databases in Ubuntu Server. > > > > Have you build mapcache yourself or do you use a prebuild one? Today I > build mapcache with BerkeleyDB support on a Debian Testing box. Basically, > this is what I did: > > * check out latest master > * apt-get install libdb5.1-dev > * follow the install instructions in INSTALL, add -DWITH_BERKELEY_DB=ON to > "cmake .." and make sure "* Berkeley DB: /usr/lib/..." is listed under > "Optional components" > * add the following config element to mapcache.xml if it does not exist > yet: > <cache name="bdb" type="bdb"> > <!-- base (required) > absolute filesystem path where the berkeley db database file is > to be stored. > this directory must exist, and be writable > --> > <base>/tmp/foo/</base> > <!-- key_template (optional) > string template used to create the key for a tile entry in the > database. > defaults to the value below. you should include {tileset}, {grid} > and {dim} here > unless you know what you are doing, or you will end up with mixed > tiles > <key_template>{tileset}-{grid}-{dim}-{z}-{y}-{x}.{ext}</key_template> > --> > </cache> > * create the base directory and grant access to web server: > # mkdir /tmp/foo && chgrp www-data /tmp/foo && chmod g+rwx /tmp/foo > * set the <cache> element to "bdb" in a tileset > * populate the cache by seeding a tileset that uses a bdb-cache > * the base should look something like this: > # ls -l /tmp/foo/ > insgesamt 11528 > -rw-r--r-- 1 www-data www-data 9764864 Jan 28 13:30 bdb.db > -rw-r----- 1 www-data www-data 24576 Jan 28 13:35 __db.001 > -rw-r----- 1 www-data www-data 253952 Jan 28 13:35 __db.002 > -rw-r----- 1 www-data www-data 1318912 Jan 28 13:35 __db.003 > -rw-r----- 1 www-data www-data 811008 Jan 28 13:35 __db.004 > > * to verify this worked use the strings command on the bdb.db and grep for > the tileset name: # strings /tmp/foo/bdb.db|grep MyTilesetName > * use the demo service to check if it is working > > > -- --- .~. / v \ // \\ /( )\ ^`~'^
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