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 ### New format and name of configuration file
36 The configuration for an import is now saved in a `.env` file in the project
37 directory. This file follows the dotenv format. For more information, see
38 the [installation chapter](Import.md#configuration-setup-in-env).
40 To migrate to the new system, create a new project directory, add the `.env`
41 file and port your custom configuration from `settings/local.php`. Most
42 settings are named similar and only have received a `NOMINATIM_` prefix.
43 Use the default settings in `settings/env.defaults` as a reference.
45 ### New location for data files
47 External data files for Wikipedia importance, postcodes etc. are no longer
48 expected to reside in the source tree by default. Instead they will be searched
49 in the project directory. If you have an automated setup script you must
50 either adapt the download location or explicitly set the location of the
51 files to the old place in your `.env`.
53 ### Introducing `nominatim` command line tool
55 The various php utilities have been replaced with a single `nominatim`
56 command line tool. Make sure to adapt any scripts. There is no direct 1:1
57 matching between the old utilities and the commands of nominatim CLI. The
58 following list gives you a list of nominatim sub-commands that contain
59 functionality of each script:
61 * ./utils/setup.php: `import`, `freeze`, `refresh`
62 * ./utils/update.php: `replication`, `add-data`, `index`, `refresh`
63 * ./utils/specialphrases.php: `special-phrases`
64 * ./utils/check_import_finished.php: `admin`
65 * ./utils/warm.php: `admin`
66 * ./utils/export.php: `export`
68 Try `nominatim <command> --help` for more information about each subcommand.
70 `./utils/query.php` no longer exists in its old form. `nominatim search`
71 provides a replacement but returns different output.
73 ### Switch to normalized house numbers
75 The housenumber column in the placex table uses now normalized version.
76 The automatic migration step will convert the column but this may take a
77 very long time. It is advisable to take the machine offline while doing that.
81 ### Change of layout of search_name_* tables
83 The table need a different index for nearest place lookup. Recreate the
84 indexes using the following shell script:
87 for table in `psql -d nominatim -c "SELECT tablename FROM pg_tables WHERE tablename LIKE 'search_name_%'" -tA | grep -v search_name_blank`;
89 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))";
93 ### Removal of html output
95 The debugging UI is no longer directly provided with Nominatim. Instead we
96 now provide a simple Javascript application. Please refer to
97 [Setting up the Nominatim UI](Setup-Nominatim-UI.md) for details on how to
100 The icons served together with the API responses have been moved to the
101 nominatim-ui project as well. If you want to keep the `icon` field in the
102 response, you need to set `CONST_MapIcon_URL` to the URL of the `/mapicon`
103 directory of nominatim-ui.
105 ### Change order during indexing
107 When reindexing places during updates, there is now a different order used
108 which needs a different database index. Create it with the following SQL command:
111 CREATE INDEX idx_placex_pendingsector_rank_address
113 USING BTREE (rank_address, geometry_sector)
114 WHERE indexed_status > 0;
117 You can then drop the old index with:
120 DROP INDEX idx_placex_pendingsector;
125 This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
128 DROP INDEX idx_placex_geometry_reverse_lookupPoint;
131 ### Switching to dotenv
133 As part of the work changing the configuration format, the configuration for
134 the website is now using a separate configuration file. To create the
135 configuration file, run the following command after updating:
138 ./utils/setup.php --setup-website
143 To update the SQL code to the leatest version run:
146 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
151 ### New Wikipedia/Wikidata importance tables
153 The `wikipedia_*` tables have a new format that also includes references to
154 Wikidata. You need to update the computation functions and the tables as
157 * download the new Wikipedia tables as described in the import section
158 * reimport the tables: `./utils/setup.php --import-wikipedia-articles`
159 * update the functions: `./utils/setup.php --create-functions --enable-diff-updates`
160 * create a new lookup index:
162 CREATE INDEX idx_placex_wikidata
164 USING BTREE ((extratags -> 'wikidata'))
165 WHERE extratags ? 'wikidata'
168 AND rank_search < 26;
170 * compute importance: `./utils/update.php --recompute-importance`
172 The last step takes about 10 hours on the full planet.
174 Remove one function (it will be recreated in the next step):
177 DROP FUNCTION create_country(hstore,character varying);
180 Finally, update all SQL functions:
183 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
188 ### Reorganisation of location_area_country table
190 The table `location_area_country` has been optimized. You need to switch to the
191 new format when you run updates. While updates are disabled, run the following
195 CREATE TABLE location_area_country_new AS
196 SELECT place_id, country_code, geometry FROM location_area_country;
197 DROP TABLE location_area_country;
198 ALTER TABLE location_area_country_new RENAME TO location_area_country;
199 CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
200 CREATE INDEX idx_location_area_country_place_id ON location_area_country USING BTREE (place_id);
203 Finally, update all SQL functions:
206 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
211 ### New database connection string (DSN) format
213 Previously database connection setting (`CONST_Database_DSN` in `settings/*.php`) had the format
215 * (simple) `pgsql://@/nominatim`
216 * (complex) `pgsql://johndoe:secret@machine1.domain.com:1234/db1`
220 * (simple) `pgsql:dbname=nominatim`
221 * (complex) `pgsql:dbname=db1;host=machine1.domain.com;port=1234;user=johndoe;password=secret`
223 ### Natural Earth country boundaries no longer needed as fallback
226 DROP TABLE country_naturalearthdata;
229 Finally, update all SQL functions:
232 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
235 ### Configurable Address Levels
237 The new configurable address levels require a new table. Create it with the
241 ./utils/update.php --update-address-levels
246 ### New reverse algorithm
248 The reverse algorithm has changed and requires new indexes. Run the following
249 SQL statements to create the indexes:
252 CREATE INDEX idx_placex_geometry_reverse_lookupPoint
254 USING gist (geometry)
255 WHERE (name IS NOT null or housenumber IS NOT null or rank_address BETWEEN 26 AND 27)
256 AND class NOT IN ('railway','tunnel','bridge','man_made')
257 AND rank_address >= 26
258 AND indexed_status = 0
259 AND linked_place_id IS null;
260 CREATE INDEX idx_placex_geometry_reverse_lookupPolygon
261 ON placex USING gist (geometry)
262 WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
263 AND rank_address between 4 and 25
264 AND type != 'postcode'
266 AND indexed_status = 0
267 AND linked_place_id is null;
268 CREATE INDEX idx_placex_geometry_reverse_placeNode
269 ON placex USING gist (geometry)
271 AND rank_search between 5 and 25
273 AND type != 'postcode'
275 AND indexed_status = 0
276 AND linked_place_id is null;
279 You also need to grant the website user access to the `country_osm_grid` table:
282 GRANT SELECT ON table country_osm_grid to "www-user";
285 Replace the `www-user` with the user name of your website server if necessary.
287 You can now drop the unused indexes:
290 DROP INDEX idx_placex_reverse_geometry;
293 Finally, update all SQL functions:
296 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
303 A new separate table for artificially computed postcode centroids was introduced.
304 Migration to the new format is possible but **not recommended**.
306 Create postcode table and indexes, running the following SQL statements:
309 CREATE TABLE location_postcode
310 (place_id BIGINT, parent_place_id BIGINT, rank_search SMALLINT,
311 rank_address SMALLINT, indexed_status SMALLINT, indexed_date TIMESTAMP,
312 country_code varchar(2), postcode TEXT,
313 geometry GEOMETRY(Geometry, 4326));
314 CREATE INDEX idx_postcode_geometry ON location_postcode USING GIST (geometry);
315 CREATE UNIQUE INDEX idx_postcode_id ON location_postcode USING BTREE (place_id);
316 CREATE INDEX idx_postcode_postcode ON location_postcode USING BTREE (postcode);
317 GRANT SELECT ON location_postcode TO "www-data";
318 DROP TYPE IF EXISTS nearfeaturecentr CASCADE;
319 CREATE TYPE nearfeaturecentr AS (
322 rank_address smallint,
323 rank_search smallint,
331 Add postcode column to `location_area` tables with SQL statement:
334 ALTER TABLE location_area ADD COLUMN postcode TEXT;
337 Then reimport the functions:
340 ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
343 Create appropriate triggers with SQL:
346 CREATE TRIGGER location_postcode_before_update BEFORE UPDATE ON location_postcode
347 FOR EACH ROW EXECUTE PROCEDURE postcode_update();
350 Finally populate the postcode table (will take a while):
353 ./utils/setup.php --calculate-postcodes --index --index-noanalyse
356 This will create a working database. You may also delete the old artificial
357 postcodes now. Note that this may be expensive and is not absolutely necessary.
358 The following SQL statement will remove them:
361 DELETE FROM place_addressline a USING placex p
362 WHERE a.address_place_id = p.place_id and p.osm_type = 'P';
363 ALTER TABLE placex DISABLE TRIGGER USER;
364 DELETE FROM placex WHERE osm_type = 'P';
365 ALTER TABLE placex ENABLE TRIGGER USER;