Merge pull request #3463 from lonvia/sqlalchemy14-with-psycopg

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

diff --git a/docs/admin/Import.md b/docs/admin/Import.md
index befe989d36620cc23dba04bed846ae9751a282e9..38cd0b740ff4ea37f90098f43dd8f461d590b733 100644 (file)
--- a/docs/admin/Import.md
+++ b/docs/admin/Import.md
@@ -14,15 +14,15 @@ to a single Nominatim setup: configuration, extra data, etc. Create a project
 directory apart from the Nominatim software and change into the directory:
 
 ```
 directory apart from the Nominatim software and change into the directory:
 
 ```

-mkdir ~/nominatim-planet
-cd ~/nominatim-planet
+mkdir ~/nominatim-project
+cd ~/nominatim-project

 ```
 
 In the following, we refer to the project directory as `$PROJECT_DIR`. To be
 able to copy&paste instructions, you can export the appropriate variable:
 
 ```
 ```
 
 In the following, we refer to the project directory as `$PROJECT_DIR`. To be
 able to copy&paste instructions, you can export the appropriate variable:
 
 ```

-export PROJECT_DIR=~/nominatim-planet
+export PROJECT_DIR=~/nominatim-project

 ```
 
 The Nominatim tool assumes per default that the current working directory is
 ```
 
 The Nominatim tool assumes per default that the current working directory is


@@ -47,8 +47,9 @@ You can also set the same configuration via environment variables. All
 settings have a `NOMINATIM_` prefix to avoid conflicts with other environment
 variables.
 
 settings have a `NOMINATIM_` prefix to avoid conflicts with other environment
 variables.
 

-There are lots of configuration settings you can tweak. Have a look
-at `Nominatim/settings/env.default` for a full list. Most should have a sensible default.
+There are lots of configuration settings you can tweak. A full reference
+can be found in the chapter [Configuration Settings](../customize/Settings.md).
+Most should have a sensible default.

 
 #### Flatnode files
 
 
 #### Flatnode files
 


@@ -73,15 +74,18 @@ but it will improve the quality of the results if this is installed.
 This data is available as a binary download. Put it into your project directory:
 
     cd $PROJECT_DIR
 This data is available as a binary download. Put it into your project directory:
 
     cd $PROJECT_DIR

-    wget https://www.nominatim.org/data/wikimedia-importance.sql.gz
+    wget https://nominatim.org/data/wikimedia-importance.sql.gz
+    wget -O secondary_importance.sql.gz https://nominatim.org/data/wikimedia-secondary-importance.sql.gz

 
 

-The file is about 400MB and adds around 4GB to the Nominatim database.
+The files are about 400MB and add around 4GB to the Nominatim database. For
+more information about importance,
+see [Importance Customization](../customize/Importance.md).

 
 !!! tip
 
 !!! tip

-    If you forgot to download the wikipedia rankings, you can also add
-    importances after the import. Download the files, then run
-    `nominatim refresh --wiki-data --importance`. Updating importances for
-    a planet can take a couple of hours.
+    If you forgot to download the wikipedia rankings, then you can
+    also add importances after the import. Download the SQL files, then
+    run `nominatim refresh --wiki-data --secondary-importance --importance`.
+    Updating importances for a planet will take a couple of hours.

 
 ### External postcodes
 
 
 ### External postcodes
 


@@ -91,11 +95,11 @@ and the UK (using the [CodePoint OpenData set](https://osdatahub.os.uk/downloads
 This data can be optionally downloaded into the project directory:
 
     cd $PROJECT_DIR
 This data can be optionally downloaded into the project directory:
 
     cd $PROJECT_DIR

-    wget https://www.nominatim.org/data/gb_postcodes.csv.gz
-    wget https://www.nominatim.org/data/us_postcodes.csv.gz
+    wget https://nominatim.org/data/gb_postcodes.csv.gz
+    wget https://nominatim.org/data/us_postcodes.csv.gz

 
 You can also add your own custom postcode sources, see
 
 You can also add your own custom postcode sources, see

-[Customization of postcodes](Customization.md#external-postcode-data).
+[Customization of postcodes](../customize/Postcodes.md).

 
 ## Choosing the data to import
 
 
 ## Choosing the data to import
 


@@ -111,7 +115,7 @@ If you only need geocoding for a smaller region, then precomputed OSM extracts
 are a good way to reduce the database size and import time.
 [Geofabrik](https://download.geofabrik.de) offers extracts for most countries.
 They even have daily updates which can be used with the update process described
 are a good way to reduce the database size and import time.
 [Geofabrik](https://download.geofabrik.de) offers extracts for most countries.
 They even have daily updates which can be used with the update process described

-[in the next section](../Update). There are also
+[in the next section](Update.md). There are also

 [other providers for extracts](https://wiki.openstreetmap.org/wiki/Planet.osm#Downloading).
 
 Please be aware that some extracts are not cut exactly along the country
 [other providers for extracts](https://wiki.openstreetmap.org/wiki/Planet.osm#Downloading).
 
 Please be aware that some extracts are not cut exactly along the country


@@ -138,8 +142,8 @@ import. So this option is particularly interesting if you plan to transfer the
 database or reuse the space later.
 
 !!! warning
 database or reuse the space later.
 
 !!! warning

-    The datastructure for updates are also required when adding additional data
-    after the import, for example [TIGER housenumber data](Customization#installing-tiger-housenumber-data-for-the-us).
+    The data structure for updates are also required when adding additional data
+    after the import, for example [TIGER housenumber data](../customize/Tiger.md).

     If you plan to use those, you must not use the `--no-updates` parameter.
     Do a normal import, add the external data and once you are done with
     everything run `nominatim freeze`.
     If you plan to use those, you must not use the `--no-updates` parameter.
     Do a normal import, add the external data and once you are done with
     everything run `nominatim freeze`.


@@ -149,10 +153,10 @@ database or reuse the space later.
 
 If you only want to use the Nominatim database for reverse lookups or
 if you plan to use the installation only for exports to a
 
 If you only want to use the Nominatim database for reverse lookups or
 if you plan to use the installation only for exports to a

-[photon](https://photon.komoot.de/) database, then you can set up a database
+[photon](https://photon.komoot.io/) database, then you can set up a database

 without search indexes. Add `--reverse-only` to your setup command above.
 
 without search indexes. Add `--reverse-only` to your setup command above.
 

-This saves about 5% of disk space.
+This saves about 5% of disk space, import time won't be significant faster.

 
 ### Filtering Imported Data
 
 
 ### Filtering Imported Data
 


@@ -191,7 +195,7 @@ full      |   54h        |  640 GB    |  330 GB
 extratags |   54h        |  650 GB    |  340 GB
 
 You can also customize the styles further.
 extratags |   54h        |  650 GB    |  340 GB
 
 You can also customize the styles further.

-A [description of the style format](../customize/Import-Styles.md) 
+A [description of the style format](../customize/Import-Styles.md)

 can be found in the customization guide.
 
 ## Initial import of the data
 can be found in the customization guide.
 
 ## Initial import of the data


@@ -208,7 +212,7 @@ nominatim import --osm-file <data file> 2>&1 | tee setup.log
 ```
 
 The **project directory** is the one that you have set up at the beginning.
 ```
 
 The **project directory** is the one that you have set up at the beginning.

-See [creating the project directory](Import#creating-the-project-directory).
+See [creating the project directory](#creating-the-project-directory).

 
 ### Notes on full planet imports
 
 
 ### Notes on full planet imports
 


@@ -227,7 +231,7 @@ to load the OSM data into the PostgreSQL database. This step is very demanding
 in terms of RAM usage. osm2pgsql and PostgreSQL are running in parallel at 
 this point. PostgreSQL blocks at least the part of RAM that has been configured
 with the `shared_buffers` parameter during
 in terms of RAM usage. osm2pgsql and PostgreSQL are running in parallel at 
 this point. PostgreSQL blocks at least the part of RAM that has been configured
 with the `shared_buffers` parameter during

-[PostgreSQL tuning](Installation#postgresql-tuning)
+[PostgreSQL tuning](Installation.md#tuning-the-postgresql-database)

 and needs some memory on top of that. osm2pgsql needs at least 2GB of RAM for
 its internal data structures, potentially more when it has to process very large
 relations. In addition it needs to maintain a cache for node locations. The size
 and needs some memory on top of that. osm2pgsql needs at least 2GB of RAM for
 its internal data structures, potentially more when it has to process very large
 relations. In addition it needs to maintain a cache for node locations. The size


@@ -253,40 +257,72 @@ successfully.
 nominatim admin --check-database
 ```
 
 nominatim admin --check-database
 ```
 

-Now you can try out your installation by running:
+Now you can try out your installation by executing a simple query on the
+command line:

 
 

-```sh
+``` sh
+nominatim search --query Berlin
+```
+
+or, when you have a reverse-only installation:
+
+``` sh
+nominatim reverse --lat 51 --lon 45
+```
+
+If you want to run Nominatim as a service, you need to make a choice between
+running the modern Python frontend and the legacy PHP frontend.
+Make sure you have installed the right packages as per
+[Installation](Installation.md#software).
+
+#### Testing the Python frontend
+
+To run the test server against the Python frontend, you must choose a
+web framework to use, either starlette or falcon. Make sure the appropriate
+packages are installed. Then run
+
+``` sh

 nominatim serve
 ```
 
 nominatim serve
 ```
 

-This runs a small test server normally used for development. You can use it
-to verify that your installation is working. Go to
-`http://localhost:8088/status.php` and you should see the message `OK`.
-You can also run a search query, e.g. `http://localhost:8088/search.php?q=Berlin`.
+or, if you prefer to use Starlette instead of Falcon as webserver,
+
+``` sh
+nominatim serve --engine starlette
+```

 
 

-Note that search query is not supported for reverse-only imports. You can run a
-reverse query, e.g. `http://localhost:8088/reverse.php?lat=27.1750090510034&lon=78.04209025`.
+Go to `http://localhost:8088/status.php` and you should see the message `OK`.
+You can also run a search query, e.g. `http://localhost:8088/search.php?q=Berlin`
+or, for reverse-only installations a reverse query,
+e.g. `http://localhost:8088/reverse.php?lat=27.1750090510034&lon=78.04209025`.

 
 

-To run Nominatim via webservers like Apache or nginx, please read the
-[Deployment chapter](Deployment.md).
+Do not use this test server in production.
+To run Nominatim via webservers like Apache or nginx, please continue reading
+[Deploy the Python frontend](Deployment-Python.md).

 
 

-## Tuning the database
+#### Testing the PHP frontend

 
 

-Accurate word frequency information for search terms helps PostgreSQL's query
-planner to make the right decisions. Recomputing them can improve the performance
-of forward geocoding in particular under high load. To recompute word counts run:
+You can run a small test server with the PHP frontend like this:

 
 ```sh
 
 ```sh

-nominatim refresh --word-counts
+nominatim serve --engine php

 ```
 
 ```
 

-This will take a couple of hours for a full planet installation. You can
-also defer that step to a later point in time when you realise that
-performance becomes an issue. Just make sure that updates are stopped before
-running this function.
+Go to `http://localhost:8088/status.php` and you should see the message `OK`.
+You can also run a search query, e.g. `http://localhost:8088/search.php?q=Berlin`
+or, for reverse-only installations a reverse query,
+e.g. `http://localhost:8088/reverse.php?lat=27.1750090510034&lon=78.04209025`.
+
+Do not use this test server in production.
+To run Nominatim via webservers like Apache or nginx, please continue reading
+[Deploy the PHP frontend](Deployment-PHP.md).
+
+
+
+## Enabling search by category phrases

 
 

-If you want to be able to search for places by their type through
-[special key phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)
+To be able to search for places by their type using
+[special phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)

 you also need to import these key phrases like this:
 
 ```sh
 you also need to import these key phrases like this:
 
 ```sh


@@ -297,4 +333,4 @@ Note that this command downloads the phrases from the wiki link above. You
 need internet access for the step.
 
 You can also import special phrases from a csv file, for more 
 need internet access for the step.
 
 You can also import special phrases from a csv file, for more 

-information please read the [Customization chapter](Customization.md).
+information please see the [Customization part](../customize/Special-Phrases.md).