3 This page contains generic installation instructions for Nominatim and its
4 prerequisites. There are also step-by-step instructions available for
5 the following operating systems:
7 * [Ubuntu 20.04](../appendix/Install-on-Ubuntu-20.md)
8 * [Ubuntu 18.04](../appendix/Install-on-Ubuntu-18.md)
9 * [CentOS 8](../appendix/Install-on-Centos-8.md)
10 * [CentOS 7.2](../appendix/Install-on-Centos-7.md)
12 These OS-specific instructions can also be found in executable form
13 in the `vagrant/` directory.
15 Users have created instructions for other frameworks. We haven't tested those
16 and can't offer support.
18 * [Docker](https://github.com/mediagis/nominatim-docker)
19 * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)
20 * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
28 * [cmake](https://cmake.org/)
29 * [expat](https://libexpat.github.io/)
30 * [proj](https://proj.org/)
31 * [bzip2](http://www.bzip.org/)
32 * [zlib](https://www.zlib.net/)
33 * [Boost libraries](https://www.boost.org/), including system and filesystem
34 * PostgreSQL client libraries
35 * a recent C++ compiler (gcc 5+ or Clang 3.8+)
37 For running Nominatim:
39 * [PostgreSQL](https://www.postgresql.org) (9.3+)
40 * [PostGIS](https://postgis.net) (2.2+)
41 * [Python 3](https://www.python.org/) (3.5+)
42 * [Psycopg2](https://www.psycopg.org) (2.7+)
43 * [Python Dotenv](https://github.com/theskumar/python-dotenv)
44 * [PHP](https://php.net) (7.0 or later)
46 * PHP-intl (bundled with PHP)
47 ( PHP-cgi (for running queries from the command line)
49 For running continuous updates:
51 * [pyosmium](https://osmcode.org/pyosmium/)
53 For dependencies for running tests and building documentation, see
54 the [Development section](../develop/Development-Environment.md).
58 A minimum of 2GB of RAM is required or installation will fail. For a full
59 planet import 64GB of RAM or more are strongly recommended. Do not report
60 out of memory problems if you have less than 64GB RAM.
62 For a full planet install you will need at least 900GB of hard disk space.
63 Take into account that the OSM database is growing fast.
64 Fast disks are essential. Using NVME disks is recommended.
66 Even on a well configured machine the import of a full planet takes
67 around 2 days. On traditional spinning disks, 7-8 days are more realistic.
69 ## Tuning the PostgreSQL database
71 You might want to tune your PostgreSQL installation so that the later steps
72 make best use of your hardware. You should tune the following parameters in
73 your `postgresql.conf` file.
76 maintenance_work_mem = (10GB)
77 autovacuum_work_mem = 2GB
79 effective_cache_size = (24GB)
80 synchronous_commit = off
81 checkpoint_segments = 100 # only for postgresql <= 9.4
82 max_wal_size = 1GB # postgresql > 9.4
83 checkpoint_timeout = 10min
84 checkpoint_completion_target = 0.9
86 The numbers in brackets behind some parameters seem to work fine for
87 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
88 means that PostgreSQL needs to run checkpoints less often but it does require
89 the additional space on your disk.
91 Autovacuum must not be switched off because it ensures that the
92 tables are frequently analysed. If your machine has very little memory,
93 you might consider setting:
95 autovacuum_max_workers = 1
97 and even reduce `autovacuum_work_mem` further. This will reduce the amount
98 of memory that autovacuum takes away from the import process.
100 For the initial import, you should also set:
103 full_page_writes = off
105 Don't forget to reenable them after the initial import or you risk database
109 ## Downloading and building Nominatim
111 ### Downloading the latest release
113 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
114 The release contains all necessary files. Just unpack it.
116 ### Downloading the latest development version
118 If you want to install latest development version from github, make sure to
119 also check out the osm2pgsql subproject:
122 git clone --recursive git://github.com/openstreetmap/Nominatim.git
125 The development version does not include the country grid. Download it separately:
128 wget -O Nominatim/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
131 ### Building Nominatim
133 The code must be built in a separate directory. Create the directory and
141 Nominatim uses cmake and make for building. Assuming that you have created the
142 build at the same level as the Nominatim source directory run:
150 Nominatim installs itself into `/usr/local` per default. To choose a different
151 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
152 cmake command. Make sure that the `bin` directory is available in your path
156 export PATH=<install root>/bin:$PATH
159 Now continue with [importing the database](Import.md).