add warning about experimental nature of ICU tokenizer

[nominatim.git] / docs / admin / Migration.md

diff --git a/docs/admin/Migration.md b/docs/admin/Migration.md
index 52970a33d65c078189aabf4a0537e1e15abe3385..fc309af1c3d9d69a089d40b280bea11dc240a747 100644 (file)
--- a/docs/admin/Migration.md
+++ b/docs/admin/Migration.md
@@ -4,18 +4,29 @@ Since version 3.7.0 Nominatim offers automatic migrations. Please follow
 the following steps:
 
 * stop any updates that are potentially running
-* update Nominatim to the nwer version
-* goto your project directory and run `nominatim admin --migrate`
+* update Nominatim to the newer version
+* go to your project directory and run `nominatim admin --migrate`
 * (optionally) restart updates
 
 Below you find additional migrations and hints about other structural and
-breaking changes.
+breaking changes. **Please read them before running the migration.**
 
 !!! note
     If you are migrating from a version <3.6, then you still have to follow
     the manual migration steps up to 3.6.
 
-## 3.6.0 -> master
+## 3.6.0 -> 3.7.0
+
+### New format and name of configuration file
+
+The configuration for an import is now saved in a `.env` file in the project
+directory. This file follows the dotenv format. For more information, see
+the [installation chapter](Import.md#configuration-setup-in-env).
+
+To migrate to the new system, create a new project directory, add the `.env`
+file and port your custom configuration from `settings/local.php`. Most
+settings are named similar and only have received a `NOMINATIM_` prefix.
+Use the default settings in `settings/env.defaults` as a reference.
 
 ### New location for data files
 
@@ -45,6 +56,12 @@ Try `nominatim <command> --help` for more information about each subcommand.
 `./utils/query.php` no longer exists in its old form. `nominatim search`
 provides a replacement but returns different output.
 
+### Switch to normalized house numbers
+
+The housenumber column in the placex table uses now normalized version.
+The automatic migration step will convert the column but this may take a
+very long time. It is advisable to take the machine offline while doing that.
+
 ## 3.5.0 -> 3.6.0
 
 ### Change of layout of search_name_* tables
@@ -107,6 +124,14 @@ configuration file, run the following command after updating:
 ./utils/setup.php --setup-website
 ```
 
+### Update SQL code
+
+To update the SQL code to the leatest version run:
+
+```
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
 ## 3.4.0 -> 3.5.0
 
 ### New Wikipedia/Wikidata importance tables