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 * [ICU](http://site.icu-project.org/)
34 * [Boost libraries](https://www.boost.org/), including system and filesystem
35 * PostgreSQL client libraries
36 * a recent C++ compiler (gcc 5+ or Clang 3.8+)
38 For running Nominatim:
40 * [PostgreSQL](https://www.postgresql.org) (9.3+ will work, 11+ strongly recommended)
41 * [PostGIS](https://postgis.net) (2.2+)
42 * [Python 3](https://www.python.org/) (3.5+)
43 * [Psycopg2](https://www.psycopg.org) (2.7+)
44 * [Python Dotenv](https://github.com/theskumar/python-dotenv)
45 * [psutil](https://github.com/giampaolo/psutil)
46 * [Jinja2](https://palletsprojects.com/p/jinja/)
47 * [PyICU](https://pypi.org/project/PyICU/)
48 * [datrie](https://github.com/pytries/datrie)
49 * [PHP](https://php.net) (7.0 or later)
51 * PHP-intl (bundled with PHP)
52 * PHP-cgi (for running queries from the command line)
54 For running continuous updates:
56 * [pyosmium](https://osmcode.org/pyosmium/)
58 For dependencies for running tests and building documentation, see
59 the [Development section](../develop/Development-Environment.md).
63 A minimum of 2GB of RAM is required or installation will fail. For a full
64 planet import 64GB of RAM or more are strongly recommended. Do not report
65 out of memory problems if you have less than 64GB RAM.
67 For a full planet install you will need at least 900GB of hard disk space.
68 Take into account that the OSM database is growing fast.
69 Fast disks are essential. Using NVME disks is recommended.
71 Even on a well configured machine the import of a full planet takes
72 around 2 days. On traditional spinning disks, 7-8 days are more realistic.
74 ## Tuning the PostgreSQL database
76 You might want to tune your PostgreSQL installation so that the later steps
77 make best use of your hardware. You should tune the following parameters in
78 your `postgresql.conf` file.
81 maintenance_work_mem = (10GB)
82 autovacuum_work_mem = 2GB
84 effective_cache_size = (24GB)
85 synchronous_commit = off
86 checkpoint_segments = 100 # only for postgresql <= 9.4
87 max_wal_size = 1GB # postgresql > 9.4
88 checkpoint_timeout = 10min
89 checkpoint_completion_target = 0.9
91 The numbers in brackets behind some parameters seem to work fine for
92 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
93 means that PostgreSQL needs to run checkpoints less often but it does require
94 the additional space on your disk.
96 Autovacuum must not be switched off because it ensures that the
97 tables are frequently analysed. If your machine has very little memory,
98 you might consider setting:
100 autovacuum_max_workers = 1
102 and even reduce `autovacuum_work_mem` further. This will reduce the amount
103 of memory that autovacuum takes away from the import process.
105 For the initial import, you should also set:
108 full_page_writes = off
110 Don't forget to reenable them after the initial import or you risk database
114 ## Downloading and building Nominatim
116 ### Downloading the latest release
118 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
119 The release contains all necessary files. Just unpack it.
121 ### Downloading the latest development version
123 If you want to install latest development version from github, make sure to
124 also check out the osm2pgsql subproject:
127 git clone --recursive git://github.com/openstreetmap/Nominatim.git
130 The development version does not include the country grid. Download it separately:
133 wget -O Nominatim/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
136 ### Building Nominatim
138 The code must be built in a separate directory. Create the directory and
146 Nominatim uses cmake and make for building. Assuming that you have created the
147 build at the same level as the Nominatim source directory run:
155 Nominatim installs itself into `/usr/local` per default. To choose a different
156 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
157 cmake command. Make sure that the `bin` directory is available in your path
161 export PATH=<install root>/bin:$PATH
164 Now continue with [importing the database](Import.md).