ignore overly long ways during import

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

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index b5176617d9c59c0720b2fd243a8d2f505aeb74d9..d837439936ac2162b5001f5a1b70ff07d97ad1c1 100644 (file)
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -4,9 +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 18.04](../appendix/Install-on-Ubuntu-18.md)
-  * [Ubuntu 16.04](../appendix/Install-on-Ubuntu-16.md)
-  * [CentOS 7.2](../appendix/Install-on-Centos-7.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.


@@ -16,142 +15,133 @@ and can't offer support.
 
   * [Docker](https://github.com/mediagis/nominatim-docker)
   * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)
 
   * [Docker](https://github.com/mediagis/nominatim-docker)
   * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)

+  * [Kubernetes with Helm](https://github.com/robjuz/helm-charts/blob/master/charts/nominatim/README.md)

   * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
 
 ## Prerequisites
 
 ### Software
 
   * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
 
 ## Prerequisites
 
 ### Software
 

-For compiling:
+For running Nominatim:

 
 

-  * [cmake](https://cmake.org/)
-  * [libxml2](http://xmlsoft.org/)
-  * a recent C++ compiler
+  * [PostgreSQL](https://www.postgresql.org) (12+ will work, 13+ strongly recommended)
+  * [PostGIS](https://postgis.net) (3.0+ will work, 3.2+ strongly recommended)
+  * [osm2pgsql](https://osm2pgsql.org) (1.8+)
+  * [Python 3](https://www.python.org/) (3.7+)

 
 

-Nominatim comes with its own version of osm2pgsql. See the
-osm2pgsql README for additional dependencies required for compiling osm2pgsql.
+Furthermore the following Python libraries are required:

 
 

-For running tests:
+  * [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/)
+  * [PyICU](https://pypi.org/project/PyICU/)
+  * [PyYaml](https://pyyaml.org/) (5.1+)
+  * [datrie](https://github.com/pytries/datrie)

 
 

-  * [behave](http://pythonhosted.org/behave/)
-  * [Psycopg2](https://initd.org/psycopg)
-  * [nose](https://nose.readthedocs.io)
-  * [phpunit](https://phpunit.de)
+These will be installed automatically when using pip installation.

 
 

-For running Nominatim:
+For running continuous updates:

 
 

-  * [PostgreSQL](https://www.postgresql.org) (9.3 or later)
-  * [PostGIS](https://postgis.org) (2.2 or later)
-  * [PHP](https://php.net) (7.0 or later)
-  * PHP-pgsql
-  * PHP-intl (bundled with PHP)
-  * a webserver (apache or nginx are recommended)
+  * [pyosmium](https://osmcode.org/pyosmium/)

 
 

-For running continuous updates:
+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+)
+    * [starlette](https://www.starlette.io/)
+  * [uvicorn](https://www.uvicorn.org/)

 
 

-  * [pyosmium](https://osmcode.org/pyosmium/) (with Python 3)
+For dependencies for running tests and building documentation, see
+the [Development section](../develop/Development-Environment.md).

 
 ### Hardware
 
 A minimum of 2GB of RAM is required or installation will fail. For a full
 
 ### Hardware
 
 A minimum of 2GB of RAM is required or installation will fail. For a full

-planet import 32GB of RAM or more are strongly recommended.
+planet import 128GB of RAM or more are strongly recommended. Do not report
+out of memory problems if you have less than 64GB RAM.

 
 

-For a full planet install you will need at least 700GB of hard disk space
-(take into account that the OSM database is growing fast). SSD disks
-will help considerably to speed up import and queries.
+For a full planet install you will need at least 1TB of hard disk space.
+Take into account that the OSM database is growing fast.
+Fast disks are essential. Using NVME disks is recommended.

 
 

-On a 6-core machine with 32GB RAM and SSDs the import of a full planet takes
-a bit more than 2 days. Without SSDs 7-8 days are more realistic.
+Even on a well configured machine the import of a full planet takes
+around 2.5 days. When using traditional SSDs, 4-5 days are more realistic.

 
 

-
-## Setup of the server
-
-### PostgreSQL tuning
+## Tuning the PostgreSQL database

 
 You might want to tune your PostgreSQL installation so that the later steps
 make best use of your hardware. You should tune the following parameters in
 your `postgresql.conf` file.
 
 
 You might want to tune your PostgreSQL installation so that the later steps
 make best use of your hardware. You should tune the following parameters in
 your `postgresql.conf` file.
 

-    shared_buffers (2GB)
-    maintenance_work_mem (10GB)
-    work_mem (50MB)
-    effective_cache_size (24GB)
+    shared_buffers = 2GB
+    maintenance_work_mem = (10GB)
+    autovacuum_work_mem = 2GB
+    work_mem = (50MB)

     synchronous_commit = off
     synchronous_commit = off

-    checkpoint_segments = 100 # only for postgresql <= 9.4
-    checkpoint_timeout = 10min
+    max_wal_size = 1GB
+    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

-32GB RAM machine. Adjust to your setup.
+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.
+
+Autovacuum must not be switched off because it ensures that the
+tables are frequently analysed. If your machine has very little memory,
+you might consider setting:
+
+    autovacuum_max_workers = 1

 
 

-For the initial import, you should also set:
+and even reduce `autovacuum_work_mem` further. This will reduce the amount
+of memory that autovacuum takes away from the import process.

 
 

-    fsync = off
-    full_page_writes = off
+## Installing the latest release

 
 

-Don't forget to reenable them after the initial import or you risk database
-corruption. Autovacuum must not be switched off because it ensures that the
-tables are frequently analysed.
+Nominatim is easiest installed directly from Pypi. Make sure you have installed
+osm2pgsql, PostgreSQL/PostGIS and libICU together with its header files.

 
 

-### Webserver setup
+Then you can install Nominatim with:

 
 

-The `website/` directory in the build directory contains the configured
-website. Include the directory into your webbrowser to serve php files
-from there.
+    pip install nominatim-db nominatim-api

 
 

-#### Configure for use with Apache
+## Downloading and building Nominatim

 
 

-Make sure your Apache configuration contains the required permissions for the
-directory and create an alias:
+### Downloading the latest release

 
 

-    <Directory "/srv/nominatim/build/website">
-      Options FollowSymLinks MultiViews
-      AddType text/html   .php
-      DirectoryIndex search.php
-      Require all granted
-    </Directory>
-    Alias /nominatim /srv/nominatim/build/website
+You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
+The release contains all necessary files. Just unpack it.

 
 

-`/srv/nominatim/build` should be replaced with the location of your
-build directory.
+### Downloading the latest development version

 
 

-After making changes in the apache config you need to restart apache.
-The website should now be available on http://localhost/nominatim.
+If you want to install latest development version from github:

 
 

-#### Configure for use with Nginx
+```
+git clone https://github.com/osm-search/Nominatim.git
+```

 
 

-Use php-fpm as a deamon for serving PHP cgi. Install php-fpm together with nginx.
+The development version does not include the country grid. Download it separately:

 
 

-By default php listens on a network socket. If you want it to listen to a
-Unix socket instead, change the pool configuration (`pool.d/www.conf`) as
-follows:
+```
+wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/country_grid.sql.gz
+```

 
 

-    ; Comment out the tcp listener and add the unix socket
-    ;listen = 127.0.0.1:9000
-    listen = /var/run/php5-fpm.sock
+### Building Nominatim

 
 

-    ; Ensure that the daemon runs as the correct user
-    listen.owner = www-data
-    listen.group = www-data
-    listen.mode = 0666
+Nominatim is easiest to run from its own virtual environment. To create one, run:

 
 

-Tell nginx that php files are special and to fastcgi_pass to the php-fpm
-unix socket by adding the location definition to the default configuration.
+    sudo apt-get install virtualenv
+    virtualenv /srv/nominatim-venv

 
 

-    root /srv/nominatim/build/website;
-    index search.php index.html;
-    location ~ [^/]\.php(/|$) {
-        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-        if (!-f $document_root$fastcgi_script_name) {
-            return 404;
-        }
-        fastcgi_pass unix:/var/run/php5-fpm.sock;
-        fastcgi_index search.php;
-        include fastcgi.conf;
-    }
+To install Nominatim directly from the source tree into the virtual environment, run:

 
 

-Restart the nginx and php5-fpm services and the website should now be available
-at `http://localhost/`.
+    /srv/nominatim-venv/bin/pip install packaging/nominatim-{db,api}

 
 
 
 

-Now continue with [importing the database](Import-and-Update.md).
+Now continue with [importing the database](Import.md).