3 Since version 3.7.0 Nominatim offers automatic migrations. Please follow
6 * stop any updates that are potentially running
7 * update Nominatim to the newer version
8 * go to your project directory and run `nominatim admin --migrate`
9 * (optionally) restart updates
11 Below you find additional migrations and hints about other structural and
12 breaking changes. **Please read them before running the migration.**
15 If you are migrating from a version <3.6, then you still have to follow
16 the manual migration steps up to 3.6.
20 ### NOMINATIM_PHRASE_CONFIG removed
22 Custom blacklist configurations for special phrases now need to be handed
23 with the `--config` parameter to `nominatim special-phrases`. Alternatively
24 you can put your custom configuration in the project directory in a file
25 named `phrase-settings.json`.
27 Version 3.8 also removes the automatic converter for the php format of
28 the configuration in older versions. If you are updating from Nominatim < 3.7
29 and still work with a custom `phrase-settings.php`, you need to manually
30 convert it into a json format.
34 The old PHP utils have now been removed completely. You need to switch to
35 the appropriate functions of the nominatim command line tool. See
36 [Introducing `nominatim` command line tool](#introducing-nominatim-command-line-tool)
41 ### New format and name of configuration file
43 The configuration for an import is now saved in a `.env` file in the project
44 directory. This file follows the dotenv format. For more information, see
45 the [installation chapter](Import.md#configuration-setup-in-env).
47 To migrate to the new system, create a new project directory, add the `.env`
48 file and port your custom configuration from `settings/local.php`. Most
49 settings are named similar and only have received a `NOMINATIM_` prefix.
50 Use the default settings in `settings/env.defaults` as a reference.
52 ### New location for data files
54 External data files for Wikipedia importance, postcodes etc. are no longer
55 expected to reside in the source tree by default. Instead they will be searched
56 in the project directory. If you have an automated setup script you must
57 either adapt the download location or explicitly set the location of the
58 files to the old place in your `.env`.
60 ### Introducing `nominatim` command line tool
62 The various php utilities have been replaced with a single `nominatim`
63 command line tool. Make sure to adapt any scripts. There is no direct 1:1
64 matching between the old utilities and the commands of nominatim CLI. The
65 following list gives you a list of nominatim sub-commands that contain
66 functionality of each script:
68 * ./utils/setup.php: `import`, `freeze`, `refresh`
69 * ./utils/update.php: `replication`, `add-data`, `index`, `refresh`
70 * ./utils/specialphrases.php: `special-phrases`
71 * ./utils/check_import_finished.php: `admin`
72 * ./utils/warm.php: `admin`
73 * ./utils/export.php: `export`
75 Try `nominatim <command> --help` for more information about each subcommand.
77 `./utils/query.php` no longer exists in its old form. `nominatim search`
78 provides a replacement but returns different output.
80 ### Switch to normalized house numbers
82 The housenumber column in the placex table uses now normalized version.
83 The automatic migration step will convert the column but this may take a
84 very long time. It is advisable to take the machine offline while doing that.
88 ### Change of layout of search_name_* tables
90 The table need a different index for nearest place lookup. Recreate the
91 indexes using the following shell script:
94 for table in `psql -d nominatim -c "SELECT tablename FROM pg_tables WHERE tablename LIKE 'search_name_%'" -tA | grep -v search_name_blank`;
96 psql -d nominatim -c "DROP INDEX idx_${table}_centroid_place; CREATE INDEX idx_${table}_centroid_place ON ${table} USING gist (centroid) WHERE ((address_rank >= 2) AND (address_rank <= 25)); DROP INDEX idx_${table}_centroid_street; CREATE INDEX idx_${table}_centroid_street ON ${table} USING gist (centroid) WHERE ((address_rank >= 26) AND (address_rank <= 27))";
100 ### Removal of html output
102 The debugging UI is no longer directly provided with Nominatim. Instead we
103 now provide a simple Javascript application. Please refer to
104 [Setting up the Nominatim UI](Setup-Nominatim-UI.md) for details on how to
107 The icons served together with the API responses have been moved to the
108 nominatim-ui project as well. If you want to keep the `icon` field in the
109 response, you need to set `CONST_MapIcon_URL` to the URL of the `/mapicon`
110 directory of nominatim-ui.
112 ### Change order during indexing
114 When reindexing places during updates, there is now a different order used
115 which needs a different database index. Create it with the following SQL command:
118 CREATE INDEX idx_placex_pendingsector_rank_address
120 USING BTREE (rank_address, geometry_sector)
121 WHERE indexed_status > 0;
124 You can then drop the old index with:
127 DROP INDEX idx_placex_pendingsector;
132 This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
135 DROP INDEX idx_placex_geometry_reverse_lookupPoint;
138 ### Switching to dotenv
140 As part of the work changing the configuration format, the configuration for
141 the website is now using a separate configuration file. To create the
142 configuration file, run the following command after updating:
145 ./utils/setup.php --setup-website
150 To update the SQL code to the leatest version run:
153 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
158 ### New Wikipedia/Wikidata importance tables
160 The `wikipedia_*` tables have a new format that also includes references to
161 Wikidata. You need to update the computation functions and the tables as
164 * download the new Wikipedia tables as described in the import section
165 * reimport the tables: `./utils/setup.php --import-wikipedia-articles`
166 * update the functions: `./utils/setup.php --create-functions --enable-diff-updates`
167 * create a new lookup index:
169 CREATE INDEX idx_placex_wikidata
171 USING BTREE ((extratags -> 'wikidata'))
172 WHERE extratags ? 'wikidata'
175 AND rank_search < 26;
177 * compute importance: `./utils/update.php --recompute-importance`
179 The last step takes about 10 hours on the full planet.
181 Remove one function (it will be recreated in the next step):
184 DROP FUNCTION create_country(hstore,character varying);
187 Finally, update all SQL functions:
190 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
195 ### Reorganisation of location_area_country table
197 The table `location_area_country` has been optimized. You need to switch to the
198 new format when you run updates. While updates are disabled, run the following
202 CREATE TABLE location_area_country_new AS
203 SELECT place_id, country_code, geometry FROM location_area_country;
204 DROP TABLE location_area_country;
205 ALTER TABLE location_area_country_new RENAME TO location_area_country;
206 CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
207 CREATE INDEX idx_location_area_country_place_id ON location_area_country USING BTREE (place_id);
210 Finally, update all SQL functions:
213 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
218 ### New database connection string (DSN) format
220 Previously database connection setting (`CONST_Database_DSN` in `settings/*.php`) had the format
222 * (simple) `pgsql://@/nominatim`
223 * (complex) `pgsql://johndoe:secret@machine1.domain.com:1234/db1`
227 * (simple) `pgsql:dbname=nominatim`
228 * (complex) `pgsql:dbname=db1;host=machine1.domain.com;port=1234;user=johndoe;password=secret`
230 ### Natural Earth country boundaries no longer needed as fallback
233 DROP TABLE country_naturalearthdata;
236 Finally, update all SQL functions:
239 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
242 ### Configurable Address Levels
244 The new configurable address levels require a new table. Create it with the
248 ./utils/update.php --update-address-levels
253 ### New reverse algorithm
255 The reverse algorithm has changed and requires new indexes. Run the following
256 SQL statements to create the indexes:
259 CREATE INDEX idx_placex_geometry_reverse_lookupPoint
261 USING gist (geometry)
262 WHERE (name IS NOT null or housenumber IS NOT null or rank_address BETWEEN 26 AND 27)
263 AND class NOT IN ('railway','tunnel','bridge','man_made')
264 AND rank_address >= 26
265 AND indexed_status = 0
266 AND linked_place_id IS null;
267 CREATE INDEX idx_placex_geometry_reverse_lookupPolygon
268 ON placex USING gist (geometry)
269 WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
270 AND rank_address between 4 and 25
271 AND type != 'postcode'
273 AND indexed_status = 0
274 AND linked_place_id is null;
275 CREATE INDEX idx_placex_geometry_reverse_placeNode
276 ON placex USING gist (geometry)
278 AND rank_search between 5 and 25
280 AND type != 'postcode'
282 AND indexed_status = 0
283 AND linked_place_id is null;
286 You also need to grant the website user access to the `country_osm_grid` table:
289 GRANT SELECT ON table country_osm_grid to "www-user";
292 Replace the `www-user` with the user name of your website server if necessary.
294 You can now drop the unused indexes:
297 DROP INDEX idx_placex_reverse_geometry;
300 Finally, update all SQL functions:
303 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
310 A new separate table for artificially computed postcode centroids was introduced.
311 Migration to the new format is possible but **not recommended**.
313 Create postcode table and indexes, running the following SQL statements:
316 CREATE TABLE location_postcode
317 (place_id BIGINT, parent_place_id BIGINT, rank_search SMALLINT,
318 rank_address SMALLINT, indexed_status SMALLINT, indexed_date TIMESTAMP,
319 country_code varchar(2), postcode TEXT,
320 geometry GEOMETRY(Geometry, 4326));
321 CREATE INDEX idx_postcode_geometry ON location_postcode USING GIST (geometry);
322 CREATE UNIQUE INDEX idx_postcode_id ON location_postcode USING BTREE (place_id);
323 CREATE INDEX idx_postcode_postcode ON location_postcode USING BTREE (postcode);
324 GRANT SELECT ON location_postcode TO "www-data";
325 DROP TYPE IF EXISTS nearfeaturecentr CASCADE;
326 CREATE TYPE nearfeaturecentr AS (
329 rank_address smallint,
330 rank_search smallint,
338 Add postcode column to `location_area` tables with SQL statement:
341 ALTER TABLE location_area ADD COLUMN postcode TEXT;
344 Then reimport the functions:
347 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
350 Create appropriate triggers with SQL:
353 CREATE TRIGGER location_postcode_before_update BEFORE UPDATE ON location_postcode
354 FOR EACH ROW EXECUTE PROCEDURE postcode_update();
357 Finally populate the postcode table (will take a while):
360 ./utils/setup.php --calculate-postcodes --index --index-noanalyse
363 This will create a working database. You may also delete the old artificial
364 postcodes now. Note that this may be expensive and is not absolutely necessary.
365 The following SQL statement will remove them:
368 DELETE FROM place_addressline a USING placex p
369 WHERE a.address_place_id = p.place_id and p.osm_type = 'P';
370 ALTER TABLE placex DISABLE TRIGGER USER;
371 DELETE FROM placex WHERE osm_type = 'P';
372 ALTER TABLE placex ENABLE TRIGGER USER;