1 # Advanced installations
3 This page contains instructions for setting up multiple countries in
4 your Nominatim database. It is assumed that you have already successfully
5 installed the Nominatim software itself, if not return to the
6 [installation page](Installation.md).
8 ## Importing multiple regions (without updates)
10 To import multiple regions in your database you can simply give multiple
11 OSM files to the import command:
14 nominatim import --osm-file file1.pbf --osm-file file2.pbf
17 If you already have imported a file and want to add another one, you can
18 use the add-data function to import the additional data as follows:
21 nominatim add-data --file <FILE>
22 nominatim refresh --postcodes
23 nominatim index -j <NUMBER OF THREADS>
26 Please note that adding additional data is always significantly slower than
29 ## Importing multiple regions (with updates)
31 If you want to import multiple regions _and_ be able to keep them up-to-date
32 with updates, then you can use the scripts provided in the `utils` directory.
34 These scripts will set up an `update` directory in your project directory,
35 which has the following structure:
41 │ │ └── sequence.state
46 ├── andorra-latest.osm.pbf
47 └── monaco-latest.osm.pbf
52 The `sequence.state` files contain the sequence ID for each region. They will
53 be used by pyosmium to get updates. The `tmp` folder is used for import dump and
54 can be deleted once the import is complete.
57 ### Setting up multiple regions
59 Create a project directory as described for the
60 [simple import](Import.md#creating-the-project-directory). If necessary,
61 you can also add an `.env` configuration with customized options. In particular,
62 you need to make sure that `NOMINATIM_REPLICATION_UPDATE_INTERVAL` and
63 `NOMINATIM_REPLICATION_RECHECK_INTERVAL` are set according to the update
64 interval of the extract server you use.
66 Copy the scripts `utils/import_multiple_regions.sh` and `utils/update_database.sh`
67 into the project directory.
69 Now customize both files as per your requirements
71 1. List of countries. e.g.
73 COUNTRIES="europe/monaco europe/andorra"
75 2. URL to the service providing the extracts and updates. eg:
77 BASEURL="https://download.geofabrik.de"
78 DOWNCOUNTRYPOSTFIX="-latest.osm.pbf"
80 5. Followup in the update script can be set according to your installation.
83 FOLLOWUP="curl http://localhost:2322/nominatim-update"
85 will handle the indexing.
88 To start the initial import, change into the project directory and run
91 bash import_multiple_regions.sh
94 ### Updating the database
96 Change into the project directory and run the following command:
98 bash update_database.sh
100 This will get diffs from the replication server, import diffs and index
101 the database. The default replication server in the
102 script([Geofabrik](https://download.geofabrik.de)) provides daily updates.
104 ## Importing Nominatim to an external PostgreSQL database
106 You can install Nominatim using a database that runs on a different server when
107 you have physical access to the file system on the other server. Nominatim
108 uses a custom normalization library that needs to be made accessible to the
109 PostgreSQL server. This section explains how to set up the normalization
112 ### Option 1: Compiling the library on the database server
114 The most sure way to get a working library is to compile it on the database
115 server. From the prerequisites you need at least cmake, gcc and the
116 PostgreSQL server package.
118 Clone or unpack the Nominatim source code, enter the source directory and
119 create and enter a build directory.
127 Now configure cmake to only build the PostgreSQL module and build it:
130 cmake -DBUILD_IMPORTER=off -DBUILD_API=off -DBUILD_TESTS=off -DBUILD_DOCS=off -DBUILD_OSM2PGSQL=off ..
134 When done, you find the normalization library in `build/module/nominatim.so`.
135 Copy it to a place where it is readable and executable by the PostgreSQL server
138 ### Option 2: Compiling the library on the import machine
140 You can also compile the normalization library on the machine from where you
144 You can only do this when the database server and the import machine have
145 the same architecture and run the same version of Linux. Otherwise there is
146 no guarantee that the compiled library is compatible with the PostgreSQL
147 server running on the database server.
149 Make sure that the PostgreSQL server package is installed on the machine
150 **with the same version as on the database server**. You do not need to install
151 the PostgreSQL server itself.
153 Download and compile Nominatim as per standard instructions. Once done, you find
154 the normalization library in `build/module/nominatim.so`. Copy the file to
155 the database server at a location where it is readable and executable by the
156 PostgreSQL server process.
158 ### Running the import
160 On the client side you now need to configure the import to point to the
161 correct location of the library **on the database server**. Add the following
162 line to your your `.env` file:
165 NOMINATIM_DATABASE_MODULE_PATH="<directory on the database server where nominatim.so resides>"
168 Now change the `NOMINATIM_DATABASE_DSN` to point to your remote server and continue
169 to follow the [standard instructions for importing](Import.md).