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 ### geocodejson output changed
22 The `type` field of the geocodejson output has changed. It now contains
23 the address class of the object instead of the value of the OSM tag. If
24 your client has used the `type` field, switch them to read `osm_value`
29 ### NOMINATIM_PHRASE_CONFIG removed
31 Custom blacklist configurations for special phrases now need to be handed
32 with the `--config` parameter to `nominatim special-phrases`. Alternatively
33 you can put your custom configuration in the project directory in a file
34 named `phrase-settings.json`.
36 Version 3.8 also removes the automatic converter for the php format of
37 the configuration in older versions. If you are updating from Nominatim < 3.7
38 and still work with a custom `phrase-settings.php`, you need to manually
39 convert it into a json format.
43 The old PHP utils have now been removed completely. You need to switch to
44 the appropriate functions of the nominatim command line tool. See
45 [Introducing `nominatim` command line tool](#introducing-nominatim-command-line-tool)
50 ### New format and name of configuration file
52 The configuration for an import is now saved in a `.env` file in the project
53 directory. This file follows the dotenv format. For more information, see
54 the [installation chapter](Import.md#configuration-setup-in-env).
56 To migrate to the new system, create a new project directory, add the `.env`
57 file and port your custom configuration from `settings/local.php`. Most
58 settings are named similar and only have received a `NOMINATIM_` prefix.
59 Use the default settings in `settings/env.defaults` as a reference.
61 ### New location for data files
63 External data files for Wikipedia importance, postcodes etc. are no longer
64 expected to reside in the source tree by default. Instead they will be searched
65 in the project directory. If you have an automated setup script you must
66 either adapt the download location or explicitly set the location of the
67 files to the old place in your `.env`.
69 ### Introducing `nominatim` command line tool
71 The various php utilities have been replaced with a single `nominatim`
72 command line tool. Make sure to adapt any scripts. There is no direct 1:1
73 matching between the old utilities and the commands of nominatim CLI. The
74 following list gives you a list of nominatim sub-commands that contain
75 functionality of each script:
77 * ./utils/setup.php: `import`, `freeze`, `refresh`
78 * ./utils/update.php: `replication`, `add-data`, `index`, `refresh`
79 * ./utils/specialphrases.php: `special-phrases`
80 * ./utils/check_import_finished.php: `admin`
81 * ./utils/warm.php: `admin`
82 * ./utils/export.php: `export`
84 Try `nominatim <command> --help` for more information about each subcommand.
86 `./utils/query.php` no longer exists in its old form. `nominatim search`
87 provides a replacement but returns different output.
89 ### Switch to normalized house numbers
91 The housenumber column in the placex table uses now normalized version.
92 The automatic migration step will convert the column but this may take a
93 very long time. It is advisable to take the machine offline while doing that.
97 ### Change of layout of search_name_* tables
99 The table need a different index for nearest place lookup. Recreate the
100 indexes using the following shell script:
103 for table in `psql -d nominatim -c "SELECT tablename FROM pg_tables WHERE tablename LIKE 'search_name_%'" -tA | grep -v search_name_blank`;
105 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))";
109 ### Removal of html output
111 The debugging UI is no longer directly provided with Nominatim. Instead we
112 now provide a simple Javascript application. Please refer to
113 [Setting up the Nominatim UI](Setup-Nominatim-UI.md) for details on how to
116 The icons served together with the API responses have been moved to the
117 nominatim-ui project as well. If you want to keep the `icon` field in the
118 response, you need to set `CONST_MapIcon_URL` to the URL of the `/mapicon`
119 directory of nominatim-ui.
121 ### Change order during indexing
123 When reindexing places during updates, there is now a different order used
124 which needs a different database index. Create it with the following SQL command:
127 CREATE INDEX idx_placex_pendingsector_rank_address
129 USING BTREE (rank_address, geometry_sector)
130 WHERE indexed_status > 0;
133 You can then drop the old index with:
136 DROP INDEX idx_placex_pendingsector;
141 This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
144 DROP INDEX idx_placex_geometry_reverse_lookupPoint;
147 ### Switching to dotenv
149 As part of the work changing the configuration format, the configuration for
150 the website is now using a separate configuration file. To create the
151 configuration file, run the following command after updating:
154 ./utils/setup.php --setup-website
159 To update the SQL code to the leatest version run:
162 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
167 ### New Wikipedia/Wikidata importance tables
169 The `wikipedia_*` tables have a new format that also includes references to
170 Wikidata. You need to update the computation functions and the tables as
173 * download the new Wikipedia tables as described in the import section
174 * reimport the tables: `./utils/setup.php --import-wikipedia-articles`
175 * update the functions: `./utils/setup.php --create-functions --enable-diff-updates`
176 * create a new lookup index:
178 CREATE INDEX idx_placex_wikidata
180 USING BTREE ((extratags -> 'wikidata'))
181 WHERE extratags ? 'wikidata'
184 AND rank_search < 26;
186 * compute importance: `./utils/update.php --recompute-importance`
188 The last step takes about 10 hours on the full planet.
190 Remove one function (it will be recreated in the next step):
193 DROP FUNCTION create_country(hstore,character varying);
196 Finally, update all SQL functions:
199 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
204 ### Reorganisation of location_area_country table
206 The table `location_area_country` has been optimized. You need to switch to the
207 new format when you run updates. While updates are disabled, run the following
211 CREATE TABLE location_area_country_new AS
212 SELECT place_id, country_code, geometry FROM location_area_country;
213 DROP TABLE location_area_country;
214 ALTER TABLE location_area_country_new RENAME TO location_area_country;
215 CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
216 CREATE INDEX idx_location_area_country_place_id ON location_area_country USING BTREE (place_id);
219 Finally, update all SQL functions:
222 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
227 ### New database connection string (DSN) format
229 Previously database connection setting (`CONST_Database_DSN` in `settings/*.php`) had the format
231 * (simple) `pgsql://@/nominatim`
232 * (complex) `pgsql://johndoe:secret@machine1.domain.com:1234/db1`
236 * (simple) `pgsql:dbname=nominatim`
237 * (complex) `pgsql:dbname=db1;host=machine1.domain.com;port=1234;user=johndoe;password=secret`
239 ### Natural Earth country boundaries no longer needed as fallback
242 DROP TABLE country_naturalearthdata;
245 Finally, update all SQL functions:
248 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
251 ### Configurable Address Levels
253 The new configurable address levels require a new table. Create it with the
257 ./utils/update.php --update-address-levels
262 ### New reverse algorithm
264 The reverse algorithm has changed and requires new indexes. Run the following
265 SQL statements to create the indexes:
268 CREATE INDEX idx_placex_geometry_reverse_lookupPoint
270 USING gist (geometry)
271 WHERE (name IS NOT null or housenumber IS NOT null or rank_address BETWEEN 26 AND 27)
272 AND class NOT IN ('railway','tunnel','bridge','man_made')
273 AND rank_address >= 26
274 AND indexed_status = 0
275 AND linked_place_id IS null;
276 CREATE INDEX idx_placex_geometry_reverse_lookupPolygon
277 ON placex USING gist (geometry)
278 WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
279 AND rank_address between 4 and 25
280 AND type != 'postcode'
282 AND indexed_status = 0
283 AND linked_place_id is null;
284 CREATE INDEX idx_placex_geometry_reverse_placeNode
285 ON placex USING gist (geometry)
287 AND rank_search between 5 and 25
289 AND type != 'postcode'
291 AND indexed_status = 0
292 AND linked_place_id is null;
295 You also need to grant the website user access to the `country_osm_grid` table:
298 GRANT SELECT ON table country_osm_grid to "www-user";
301 Replace the `www-user` with the user name of your website server if necessary.
303 You can now drop the unused indexes:
306 DROP INDEX idx_placex_reverse_geometry;
309 Finally, update all SQL functions:
312 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
319 A new separate table for artificially computed postcode centroids was introduced.
320 Migration to the new format is possible but **not recommended**.
322 Create postcode table and indexes, running the following SQL statements:
325 CREATE TABLE location_postcode
326 (place_id BIGINT, parent_place_id BIGINT, rank_search SMALLINT,
327 rank_address SMALLINT, indexed_status SMALLINT, indexed_date TIMESTAMP,
328 country_code varchar(2), postcode TEXT,
329 geometry GEOMETRY(Geometry, 4326));
330 CREATE INDEX idx_postcode_geometry ON location_postcode USING GIST (geometry);
331 CREATE UNIQUE INDEX idx_postcode_id ON location_postcode USING BTREE (place_id);
332 CREATE INDEX idx_postcode_postcode ON location_postcode USING BTREE (postcode);
333 GRANT SELECT ON location_postcode TO "www-data";
334 DROP TYPE IF EXISTS nearfeaturecentr CASCADE;
335 CREATE TYPE nearfeaturecentr AS (
338 rank_address smallint,
339 rank_search smallint,
347 Add postcode column to `location_area` tables with SQL statement:
350 ALTER TABLE location_area ADD COLUMN postcode TEXT;
353 Then reimport the functions:
356 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
359 Create appropriate triggers with SQL:
362 CREATE TRIGGER location_postcode_before_update BEFORE UPDATE ON location_postcode
363 FOR EACH ROW EXECUTE PROCEDURE postcode_update();
366 Finally populate the postcode table (will take a while):
369 ./utils/setup.php --calculate-postcodes --index --index-noanalyse
372 This will create a working database. You may also delete the old artificial
373 postcodes now. Note that this may be expensive and is not absolutely necessary.
374 The following SQL statement will remove them:
377 DELETE FROM place_addressline a USING placex p
378 WHERE a.address_place_id = p.place_id and p.osm_type = 'P';
379 ALTER TABLE placex DISABLE TRIGGER USER;
380 DELETE FROM placex WHERE osm_type = 'P';
381 ALTER TABLE placex ENABLE TRIGGER USER;