# Importing the Database
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 successfully installed the Nominatim
-software itself, if not return to the [installation page](Installation.md).
+from an OSM planet file. It is assumed that you have already successfully
+installed the Nominatim software itself and the `nominatim` tool can be found
+in your `PATH`. If this is not the case, return to the
+[installation page](Installation.md).
-## Configuration setup in `.env`
+## Creating the project directory
-The Nominatim server can be customized via a `.env` in the build directory.
-This is a file in [dotenv](https://github.com/theskumar/python-dotenv) format
-which looks the same as variable settings in a standard shell environment.
+Before you start the import, you should create a project directory for your
+new database installation. This directory receives all data that is related
+to a single Nominatim setup: configuration, extra data, etc. Create a project
+directory apart from the Nominatim software and change into the directory:
+
+```
+mkdir ~/nominatim-planet
+cd ~/nominatim-planet
+```
+
+In the following, we refer to the project directory as `$PROJECT_DIR`. To be
+able to copy&paste instructions, you can export the appropriate variable:
+
+```
+export PROJECT_DIR=~/nominatim-planet
+```
+
+The Nominatim tool assumes per default that the current working directory is
+the project directory but you may explicitly state a different directory using
+the `--project-dir` parameter. The following instructions assume that you run
+all commands from the project directory.
+
+!!! tip "Migration Tip"
+
+ Nominatim used to be run directly from the build directory until version 3.6.
+ Essentially, the build directory functioned as the project directory
+ for the database installation. This setup still works and can be useful for
+ development purposes. It is not recommended anymore for production setups.
+ Create a project directory that is separate from the Nominatim software.
+
+### Configuration setup in `.env`
+
+The Nominatim server can be customized via an `.env` configuration file in the
+project directory. This is a file in [dotenv](https://github.com/theskumar/python-dotenv)
+format which looks the same as variable settings in a standard shell environment.
You can also set the same configuration via environment variables. All
settings have a `NOMINATIM_` prefix to avoid conflicts with other environment
variables.
Wikipedia can be used as an optional auxiliary data source to help indicate
the importance of OSM features. Nominatim will work without this information
but it will improve the quality of the results if this is installed.
-This data is available as a binary download:
+This data is available as a binary download. Put it into your project directory:
- cd $NOMINATIM_SOURCE_DIR/data
+ cd $PROJECT_DIR
wget https://www.nominatim.org/data/wikimedia-importance.sql.gz
The file is about 400MB and adds around 4GB to the Nominatim database.
!!! tip
If you forgot to download the wikipedia rankings, you can also add
importances after the import. Download the files, then run
- `./nominatim refresh --wiki-data --importance`.
+ `nominatim refresh --wiki-data --importance`. Updating importances for
+ a planet can take a couple of hours.
### Great Britain, USA postcodes
Nominatim can use postcodes from an external source to improve searches that
-involve a GB or US postcode. This data can be optionally downloaded:
+involve a GB or US postcode. This data can be optionally downloaded into the
+project directory:
- cd $NOMINATIM_SOURCE_DIR/data
+ cd $PROJECT_DIR
wget https://www.nominatim.org/data/gb_postcode_data.sql.gz
wget https://www.nominatim.org/data/us_postcode_data.sql.gz
You can also drop the dynamic part later using the following command:
```
-./nominatim freeze
+nominatim freeze
```
Note that you still need to provide for sufficient disk space for the initial
from the **build directory** to start the import:
```sh
-./nominatim import --osm-file <data file> 2>&1 | tee setup.log
+nominatim import --osm-file <data file> 2>&1 | tee setup.log
```
### Notes on full planet imports
above. If the system starts swapping or you are getting out-of-memory errors,
reduce the cache size or even consider using a flatnode file.
-### Verify the import
+
+### Testing the installation
Run this script to verify all required tables and indices got created successfully.
```sh
-./nominatim check-database
+nominatim admin --check-database
```
-### Testing the installation
-
Now you can try out your installation by running:
```sh
-make serve
+nominatim serve
```
This runs a small test server normally used for development. You can use it
of forward geocoding in particular under high load. To recompute word counts run:
```sh
-./nominatim refresh --word-counts
+nominatim refresh --word-counts
```
This will take a couple of hours for a full planet installation. You can
If you want to be able to search for places by their type through
[special key phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)
-you also need to enable these key phrases like this:
+you also need to import these key phrases like this:
- ./nominatim special-phrases --from-wiki > specialphrases.sql
- psql -d nominatim -f specialphrases.sql
+```sh
+nominatim special-phrases --import-from-wiki
+```
Note that this command downloads the phrases from the wiki link above. You
need internet access for the step.
+You can also import some phrases from a csv file.
+To do so, you have access to the following command:
+
+```sh
+nominatim special-phrases --import-from-csv <csv file>
+```
+
+Note that the 2 previous commands will update the phrases from your database.
+This mean that if you import some phrases from a csv file, only the phrases
+present in the csv file will be kept into the database. All other phrases will
+be removed.
+
+If you want to only add new phrases and not update the other ones you can add
+the argument `--no-replace` to the import command. For example:
+
+```sh
+nominatim special-phrases --import-from-csv <csv file> --no-replace
+```
+
+This will add the phrases present in the csv file into the database without
+removing the other ones.
## Installing Tiger housenumber data for the US
TIGER data to your own Nominatim instance by following these steps. The
entire US adds about 10GB to your database.
- 1. Get preprocessed TIGER 2019 data and unpack it into the
- data directory in your Nominatim sources:
+ 1. Get preprocessed TIGER 2020 data:
- wget https://nominatim.org/data/tiger2019-nominatim-preprocessed.tar.gz
- tar xf tiger2019-nominatim-preprocessed.tar.gz
+ cd $PROJECT_DIR
+ wget https://nominatim.org/data/tiger2020-nominatim-preprocessed.tar.gz
2. Import the data into your Nominatim database:
- ./nominatim add-data --tiger-data tiger
+ nominatim add-data --tiger-data tiger2020-nominatim-preprocessed.tar.gz
3. Enable use of the Tiger data in your `.env` by adding:
- NOMINATIM_USE_US_TIGER_DATA=yes
+ echo NOMINATIM_USE_US_TIGER_DATA=yes >> .env
4. Apply the new settings:
-```sh
- ./nominatim refresh --functions
-```
+ nominatim refresh --functions
See the [developer's guide](../develop/data-sources.md#us-census-tiger) for more
projects / nominatim.git / blobdiff