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.org) (2.2+)
41 * [Python 3](https://www.python.org/)
42 * [Psycopg2](https://initd.org/psycopg)
43 * [PHP](https://php.net) (7.0 or later)
45 * PHP-intl (bundled with PHP)
47 For running continuous updates:
49 * [pyosmium](https://osmcode.org/pyosmium/) (with Python 3)
53 * [behave](http://pythonhosted.org/behave/)
54 * [nose](https://nose.readthedocs.io)
55 * [phpunit](https://phpunit.de) >= 7.3
59 A minimum of 2GB of RAM is required or installation will fail. For a full
60 planet import 64GB of RAM or more are strongly recommended. Do not report
61 out of memory problems if you have less than 64GB RAM.
63 For a full planet install you will need at least 800GB of hard disk space
64 (take into account that the OSM database is growing fast). SSD disks
65 will help considerably to speed up import and queries.
67 Even on a well configured machine the import of a full planet takes
68 at least 2 days. Without SSDs 7-8 days are more realistic.
70 ## Tuning the PostgreSQL database
72 You might want to tune your PostgreSQL installation so that the later steps
73 make best use of your hardware. You should tune the following parameters in
74 your `postgresql.conf` file.
77 maintenance_work_mem = (10GB)
78 autovacuum_work_mem = 2GB
80 effective_cache_size = (24GB)
81 synchronous_commit = off
82 checkpoint_segments = 100 # only for postgresql <= 9.4
83 max_wal_size = 1GB # postgresql > 9.4
84 checkpoint_timeout = 10min
85 checkpoint_completion_target = 0.9
87 The numbers in brackets behind some parameters seem to work fine for
88 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
89 means that PostgreSQL needs to run checkpoints less often but it does require
90 the additional space on your disk.
92 Autovacuum must not be switched off because it ensures that the
93 tables are frequently analysed. If your machine has very little memory,
94 you might consider setting:
96 autovacuum_max_workers = 1
98 and even reduce `autovacuum_work_mem` further. This will reduce the amount
99 of memory that autovacuum takes away from the import process.
101 For the initial import, you should also set:
104 full_page_writes = off
106 Don't forget to reenable them after the initial import or you risk database
110 ## Downloading and building Nominatim
112 ### Downloading the latest release
114 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
115 The release contains all necessary files. Just unpack it.
117 ### Downloading the latest development version
119 If you want to install latest development version from github, make sure to
120 also check out the osm2pgsql subproject:
123 git clone --recursive git://github.com/openstreetmap/Nominatim.git
126 The development version does not include the country grid. Download it separately:
129 wget -O Nominatim/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
132 ### Building Nominatim
134 The code must be built in a separate directory. Create the directory and
142 Nominatim uses cmake and make for building. Assuming that you have created the
143 build at the same level as the Nominatim source directory run:
150 Now continue with [importing the database](Import.md).