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add documentation for non-superuser import

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Sarah Hoffmann
2024-02-16 12:03:58 +01:00
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docs/admin/Advanced-Installations.md
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@@ -5,6 +5,35 @@ your Nominatim database. It is assumed that you have already successfully
installed the Nominatim software itself, if not return to the
[installation page](Installation.md).
## Importing with a database user without superuser rights
Nominatim usually creates its own PostgreSQL database at the beginning of the
import process. This makes usage easier for the user but means that the
database user doing the import needs the appropriate rights.
If you prefer to run the import with a database user with limited rights,
you can do so by changing the import process as follows:
1. Run the command for database preparation with a database user with
superuser rights. For example, to use a db user 'dbadmin' for a
database 'nominatim', execute:
```
NOMINATIM_DATABASE_DSN="pgsql:dbname=nominatim;user=dbadmin" nominatim import --prepare-database
```
2. Grant the import user the right to create tables. For example, foe user 'import-user':
```
psql -d nominatim -c 'GRANT CREATE ON SCHEMA public TO "import-user"'
```
3. Now run the reminder of the import with the import user:
```
NOMINATIM_DATABASE_DSN="pgsql:dbname=nominatim;user=import-user" nominatim import --continue import-from-file --osm-file file.pbf
```
## Importing multiple regions (without updates)
To import multiple regions in your database you can simply give multiple