The following instructions explain how to create a Nominatim database
from an OSM planet file and how to keep the database up to date. It
is assumed that you have already sucessfully installed the Nominatim
-software itself, if not return to the [prerequisites page](Prerequisites.md).
+software itself, if not return to the [installation page](Installation.md).
Configuration setup in settings/local.php
-----------------------------------------
@define('CONST_Osm2pgsql_Flatnode_File', '/path/to/flatnode.file');
+Replace the second part with a suitable path on your system and make sure
+the directory exists. There should be at least 35GB of free space.
Downloading additional data
---------------------------
wget http://www.nominatim.org/data/gb_postcode_data.sql.gz
-Initial Import of the Data
+Initial import of the data
--------------------------
-**Important:** first try the import with a small excerpt, for example from Geofabrik.
+**Important:** first try the import with a small excerpt, for example from
+[Geofabrik](http://download.geofabrik.de).
Download the data to import and load the data with the following command:
The --osm2pgsql-cache parameter is optional but strongly recommended for
planet imports. It sets the node cache size for the osm2pgsql import part
(see -C parameter in osm2pgsql help). 28GB are recommended for a full planet
-imports, for excerpts you can use less.
-Adapt to your available RAM to avoid swapping.
+import, for excerpts you can use less. Adapt to your available RAM to
+avoid swapping, never give more than 2/3 of RAM to osm2pgsql.
-The import will take as little as an hour for a small country extract
-and as much as 10 days for a full-scale planet import on less powerful
-hardware.
-
-Loading Additional Datasets
+Loading additional datasets
---------------------------
-The following commands will create additional entries for countries and POI searches:
+The following commands will create additional entries for POI searches:
+
+ ./utils/specialphrases.php --wiki-import > specialphrases.sql
+ psql -d nominatim -f specialphrases.sql
+
+
+Installing Tiger housenumber data for the US
+============================================
+
+Nominatim is able to use the official TIGER address set to complement the
+OSM housenumber data in the US. You can add TIGER data to your own Nominatim
+instance by following these steps:
+
+ 1. Install the GDAL library and python bindings
+
+ * Ubuntu: `sudo apt-get install python-gdal`
+ * CentOS: `sudo yum install gdal-python`
+
+ 2. Get the TIGER 2015 data. You will need the EDGES files
+ (3,234 zip files, 11GB total). Choose one of the two sources:
+
+ wget -r ftp://ftp2.census.gov/geo/tiger/TIGER2015/EDGES/
+ wget -r ftp://mirror1.shellbot.com/census/geo/tiger/TIGER2015/EDGES/
+
+ The first one is the original source, the second a considerably faster
+ mirror.
+
+ 3. Convert the data into SQL statements (stored in data/tiger):
+
+ ./utils/imports.php --parse-tiger <tiger edge data directory>
+
+ 4. Import the data into your Nominatim database:
+
+ ./utils/setup.php --import-tiger-data
+
+ 5. Enable use of the Tiger data in your `settings/local.php` by adding:
+
+ @define('CONST_Use_US_Tiger_Data', true);
+
+ 6. Apply the new settings:
+
+ ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+
+Be warned that the import can take a very long time, especially if you
+import all of the US. The entire US adds about 10GB to your database.
+
+
+Updates
+=======
+
+There are many different possibilities to update your Nominatim database.
+The following section describes how to keep it up-to-date with osmosis.
+For a list of other methods see the output of `./utils/update.php --help`.
+
+Installing the newest version of osmosis
+----------------------------------------
+
+The version of osmosis that comes with your distribution should be sufficient
+in most cases.
+
+If you want to install it by hand, get the latest version from the
+[Osmosis website](http://wiki.openstreetmap.org/wiki/Osmosis). Then
+tell Nominatim to use this version by adding the following line to
+your `settings/local.php`:
+
+ @define('CONST_Osmosis_Binary', '/usr/local/bin/osmosis');
+
+Setting up the update process
+-----------------------------
+
+Next the update needs to be initialised. By default Nominatim is configured
+to update using the global minutely diffs.
+
+If you want a different update source you will need to add some settings
+to `settings/local.php`. For example, to use the daily country extracts
+diffs for Ireland from geofabrik add the following:
+
+ // base URL of the replication service
+ @define('CONST_Replication_Url', 'http://download.geofabrik.de/europe/ireland-and-northern-ireland-updates');
+ // Process each update separately, osmosis cannot merge multiple updates
+ @define('CONST_Replication_MaxInterval', '40000');
+ // How often upstream publishes diffs
+ @define('CONST_Replication_Update_Interval', '86400');
+ // How long to sleep if no update found yet
+ @define('CONST_Replication_Recheck_Interval', '900');
+
+
+Delete any existing `settings/configuration.txt`, then run the following command
+to create the osmosis configuration files:
+
+ ./utils/setup.php --osmosis-init
+
+Enabling hierarchical updates
+-----------------------------
+
+When a place is updated in the database, all places that contain this place
+in their address need to be updated as well. These hierarchical updates are
+disabled by default because they slow down the initial import.
+Enable them with the following command:
+
+ ./utils/setup.php --create-functions --enable-diff-updates
+
+Updating Nominatim
+------------------
+
+The following command will keep your database constantly up to date:
+
+ ./utils/update.php --import-osmosis-all --no-npi
- ./utils/specialphrases.php --countries > data/specialphrases_countries.sql
- psql -d nominatim -f data/specialphrases_countries.sql
- ./utils/specialphrases.php --wiki-import > data/specialphrases.sql
- psql -d nominatim -f data/specialphrases.sql
+If you have imported multiple country extracts and want to keep them
+up-to-date, have a look at the script in
+[issue #60](https://github.com/twain47/Nominatim/issues/60).
projects / nominatim.git / blobdiff