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 * [PHP](https://php.net) (7.0 or later)
50 * PHP-intl (bundled with PHP)
51 * PHP-cgi (for running queries from the command line)
53 For running continuous updates:
55 * [pyosmium](https://osmcode.org/pyosmium/)
57 For dependencies for running tests and building documentation, see
58 the [Development section](../develop/Development-Environment.md).
62 A minimum of 2GB of RAM is required or installation will fail. For a full
63 planet import 64GB of RAM or more are strongly recommended. Do not report
64 out of memory problems if you have less than 64GB RAM.
66 For a full planet install you will need at least 900GB of hard disk space.
67 Take into account that the OSM database is growing fast.
68 Fast disks are essential. Using NVME disks is recommended.
70 Even on a well configured machine the import of a full planet takes
71 around 2 days. On traditional spinning disks, 7-8 days are more realistic.
73 ## Tuning the PostgreSQL database
75 You might want to tune your PostgreSQL installation so that the later steps
76 make best use of your hardware. You should tune the following parameters in
77 your `postgresql.conf` file.
80 maintenance_work_mem = (10GB)
81 autovacuum_work_mem = 2GB
83 effective_cache_size = (24GB)
84 synchronous_commit = off
85 checkpoint_segments = 100 # only for postgresql <= 9.4
86 max_wal_size = 1GB # postgresql > 9.4
87 checkpoint_timeout = 10min
88 checkpoint_completion_target = 0.9
90 The numbers in brackets behind some parameters seem to work fine for
91 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
92 means that PostgreSQL needs to run checkpoints less often but it does require
93 the additional space on your disk.
95 Autovacuum must not be switched off because it ensures that the
96 tables are frequently analysed. If your machine has very little memory,
97 you might consider setting:
99 autovacuum_max_workers = 1
101 and even reduce `autovacuum_work_mem` further. This will reduce the amount
102 of memory that autovacuum takes away from the import process.
104 For the initial import, you should also set:
107 full_page_writes = off
109 Don't forget to reenable them after the initial import or you risk database
113 ## Downloading and building Nominatim
115 ### Downloading the latest release
117 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
118 The release contains all necessary files. Just unpack it.
120 ### Downloading the latest development version
122 If you want to install latest development version from github, make sure to
123 also check out the osm2pgsql subproject:
126 git clone --recursive git://github.com/openstreetmap/Nominatim.git
129 The development version does not include the country grid. Download it separately:
132 wget -O Nominatim/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
135 ### Building Nominatim
137 The code must be built in a separate directory. Create the directory and
145 Nominatim uses cmake and make for building. Assuming that you have created the
146 build at the same level as the Nominatim source directory run:
154 Nominatim installs itself into `/usr/local` per default. To choose a different
155 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
156 cmake command. Make sure that the `bin` directory is available in your path
160 export PATH=<install root>/bin:$PATH
163 Now continue with [importing the database](Import.md).