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Merge pull request #3530 from lonvia/clean-use-of-os-environ
[nominatim.git] / docs / admin / Installation.md
diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 1c9b5f3d874b99b5c7681a1b6b45087c710b40e3..e67371bd9de4424fdce0f9b24838657493a4fa18 100644 (file)
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -4,8 +4,8 @@ This page contains generic installation instructions for Nominatim and its
 prerequisites. There are also step-by-step instructions available for
 the following operating systems:
 
 prerequisites. There are also step-by-step instructions available for
 the following operating systems:
 
-  * [Ubuntu 22.04](../appendix/Install-on-Ubuntu-22.md)
-  * [Ubuntu 20.04](../appendix/Install-on-Ubuntu-20.md)
+  * [Ubuntu 24.04](Install-on-Ubuntu-24.md)
+  * [Ubuntu 22.04](Install-on-Ubuntu-22.md)
 
 These OS-specific instructions can also be found in executable form
 in the `vagrant/` directory.
 
 These OS-specific instructions can also be found in executable form
 in the `vagrant/` directory.
@@ -27,48 +27,57 @@ and can't offer support.
     otherwise import and queries will be slow to the point of being unusable.
     Query performance has marked improvements with PostgreSQL 13+ and PostGIS 3.2+.
 
     otherwise import and queries will be slow to the point of being unusable.
     Query performance has marked improvements with PostgreSQL 13+ and PostGIS 3.2+.
 
-For compiling:
-
-  * [cmake](https://cmake.org/)
-  * [expat](https://libexpat.github.io/)
-  * [proj](https://proj.org/)
-  * [bzip2](http://www.bzip.org/)
-  * [zlib](https://www.zlib.net/)
-  * [ICU](http://site.icu-project.org/)
-  * [Boost libraries](https://www.boost.org/), including system and filesystem
-  * PostgreSQL client libraries
-  * a recent C++ compiler (gcc 5+ or Clang 3.8+)
-
 For running Nominatim:
 
   * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
   * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
 For running Nominatim:
 
   * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
   * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
+  * [osm2pgsql](https://osm2pgsql.org) (1.8+, optional when building with CMake)
   * [Python 3](https://www.python.org/) (3.7+)
   * [Python 3](https://www.python.org/) (3.7+)
-  * [Psycopg2](https://www.psycopg.org) (2.7+)
+
+Furthermore the following Python libraries are required:
+
+  * [Psycopg3](https://www.psycopg.org)
   * [Python Dotenv](https://github.com/theskumar/python-dotenv)
   * [psutil](https://github.com/giampaolo/psutil)
   * [Jinja2](https://palletsprojects.com/p/jinja/)
   * [Python Dotenv](https://github.com/theskumar/python-dotenv)
   * [psutil](https://github.com/giampaolo/psutil)
   * [Jinja2](https://palletsprojects.com/p/jinja/)
-  * [SQLAlchemy](https://www.sqlalchemy.org/) (1.4+ with greenlet support)
-  * [asyncpg](https://magicstack.github.io/asyncpg)
   * [PyICU](https://pypi.org/project/PyICU/)
   * [PyYaml](https://pyyaml.org/) (5.1+)
   * [datrie](https://github.com/pytries/datrie)
   * [PyICU](https://pypi.org/project/PyICU/)
   * [PyYaml](https://pyyaml.org/) (5.1+)
   * [datrie](https://github.com/pytries/datrie)
-  * [PHP](https://php.net) (7.0 or later)
-  * PHP-pgsql
-  * PHP-intl (bundled with PHP)
-  * PHP-cgi (for running queries from the command line)
+
+These will be installed automatically when using pip installation.
+
+When using legacy CMake-based installation:
+
+  * [cmake](https://cmake.org/)
+  * [expat](https://libexpat.github.io/)
+  * [proj](https://proj.org/)
+  * [bzip2](http://www.bzip.org/)
+  * [zlib](https://www.zlib.net/)
+  * [ICU](http://site.icu-project.org/)
+  * [nlohmann/json](https://json.nlohmann.me/)
+  * [Boost libraries](https://www.boost.org/), including system and file system
+  * PostgreSQL client libraries
+  * a recent C++ compiler (gcc 5+ or Clang 3.8+)
 
 For running continuous updates:
 
   * [pyosmium](https://osmcode.org/pyosmium/)
 
 
 For running continuous updates:
 
   * [pyosmium](https://osmcode.org/pyosmium/)
 
-For running the experimental Python frontend:
+For running the Python frontend:
 
 
+  * [SQLAlchemy](https://www.sqlalchemy.org/) (1.4.31+ with greenlet support)
+  * [asyncpg](https://magicstack.github.io/asyncpg) (0.8+, only when using SQLAlchemy < 2.0)
   * one of the following web frameworks:
     * [falcon](https://falconframework.org/) (3.0+)
   * one of the following web frameworks:
     * [falcon](https://falconframework.org/) (3.0+)
-    * [sanic](https://sanic.dev)
     * [starlette](https://www.starlette.io/)
     * [starlette](https://www.starlette.io/)
-  * [uvicorn](https://www.uvicorn.org/) (only with falcon and starlette framworks)
+  * [uvicorn](https://www.uvicorn.org/)
+
+For running the legacy PHP frontend (deprecated, will be removed in Nominatim 5.0):
+
+  * [PHP](https://php.net) (7.3+)
+  * PHP-pgsql
+  * PHP-intl (bundled with PHP)
+
 
 For dependencies for running tests and building documentation, see
 the [Development section](../develop/Development-Environment.md).
 
 For dependencies for running tests and building documentation, see
 the [Development section](../develop/Development-Environment.md).
@@ -84,7 +93,7 @@ Take into account that the OSM database is growing fast.
 Fast disks are essential. Using NVME disks is recommended.
 
 Even on a well configured machine the import of a full planet takes
 Fast disks are essential. Using NVME disks is recommended.
 
 Even on a well configured machine the import of a full planet takes
-around 2 days. On traditional spinning disks, 7-8 days are more realistic.
+around 2.5 days. When using traditional SSDs, 4-5 days are more realistic.
 
 ## Tuning the PostgreSQL database
 
 
 ## Tuning the PostgreSQL database
 
@@ -96,14 +105,16 @@ your `postgresql.conf` file.
     maintenance_work_mem = (10GB)
     autovacuum_work_mem = 2GB
     work_mem = (50MB)
     maintenance_work_mem = (10GB)
     autovacuum_work_mem = 2GB
     work_mem = (50MB)
-    effective_cache_size = (24GB)
     synchronous_commit = off
     max_wal_size = 1GB
     synchronous_commit = off
     max_wal_size = 1GB
-    checkpoint_timeout = 10min
+    checkpoint_timeout = 60min
     checkpoint_completion_target = 0.9
     checkpoint_completion_target = 0.9
+    random_page_cost = 1.0
+    wal_level = minimal
+    max_wal_senders = 0
 
 The numbers in brackets behind some parameters seem to work fine for
 
 The numbers in brackets behind some parameters seem to work fine for
-64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
+128GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
 means that PostgreSQL needs to run checkpoints less often but it does require
 the additional space on your disk.
 
 means that PostgreSQL needs to run checkpoints less often but it does require
 the additional space on your disk.
 
@@ -116,15 +127,6 @@ you might consider setting:
 and even reduce `autovacuum_work_mem` further. This will reduce the amount
 of memory that autovacuum takes away from the import process.
 
 and even reduce `autovacuum_work_mem` further. This will reduce the amount
 of memory that autovacuum takes away from the import process.
 
-For the initial import, you should also set:
-
-    fsync = off
-    full_page_writes = off
-
-Don't forget to re-enable them after the initial import or you risk database
-corruption.
-
-
 ## Downloading and building Nominatim
 
 ### Downloading the latest release
 ## Downloading and building Nominatim
 
 ### Downloading the latest release
@@ -149,6 +151,23 @@ wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/countr
 
 ### Building Nominatim
 
 
 ### Building Nominatim
 
+#### Building the latest development version with pip
+
+Nominatim is easiest to run from its own virtual environment. To create one, run:
+
+    sudo apt-get install virtualenv
+    virtualenv /srv/nominatim-venv
+
+To install Nominatim directly from the source tree into the virtual environment, run:
+
+    /srv/nominatim-venv/bin/pip install packaging/nominatim-{db,api}
+
+#### Building in legacy CMake mode
+
+!!! warning
+    Installing Nominatim through CMake is now deprecated. The infrastructure
+    will be removed in Nominatim 5.0. Please switch to pip installation.
+
 The code must be built in a separate directory. Create the directory and
 change into it.
 
 The code must be built in a separate directory. Create the directory and
 change into it.
 
@@ -175,6 +194,7 @@ sudo make install
     cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
     you need to have the server development headers for PostgreSQL installed.
     On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
     cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
     you need to have the server development headers for PostgreSQL installed.
     On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
+    The legacy tokenizer is deprecated and will be removed in Nominatim 5.0
 
 
 Nominatim installs itself into `/usr/local` per default. To choose a different
 
 
 Nominatim installs itself into `/usr/local` per default. To choose a different
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