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)
51 For dependencies for running tests and building documentation, see
52 the [Development section](../develop/Development-Environment.md).
56 A minimum of 2GB of RAM is required or installation will fail. For a full
57 planet import 64GB of RAM or more are strongly recommended. Do not report
58 out of memory problems if you have less than 64GB RAM.
60 For a full planet install you will need at least 800GB of hard disk space
61 (take into account that the OSM database is growing fast). SSD disks
62 will help considerably to speed up import and queries.
64 Even on a well configured machine the import of a full planet takes
65 at least 2 days. Without SSDs 7-8 days are more realistic.
67 ## Tuning the PostgreSQL database
69 You might want to tune your PostgreSQL installation so that the later steps
70 make best use of your hardware. You should tune the following parameters in
71 your `postgresql.conf` file.
74 maintenance_work_mem = (10GB)
75 autovacuum_work_mem = 2GB
77 effective_cache_size = (24GB)
78 synchronous_commit = off
79 checkpoint_segments = 100 # only for postgresql <= 9.4
80 max_wal_size = 1GB # postgresql > 9.4
81 checkpoint_timeout = 10min
82 checkpoint_completion_target = 0.9
84 The numbers in brackets behind some parameters seem to work fine for
85 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
86 means that PostgreSQL needs to run checkpoints less often but it does require
87 the additional space on your disk.
89 Autovacuum must not be switched off because it ensures that the
90 tables are frequently analysed. If your machine has very little memory,
91 you might consider setting:
93 autovacuum_max_workers = 1
95 and even reduce `autovacuum_work_mem` further. This will reduce the amount
96 of memory that autovacuum takes away from the import process.
98 For the initial import, you should also set:
101 full_page_writes = off
103 Don't forget to reenable them after the initial import or you risk database
107 ## Downloading and building Nominatim
109 ### Downloading the latest release
111 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
112 The release contains all necessary files. Just unpack it.
114 ### Downloading the latest development version
116 If you want to install latest development version from github, make sure to
117 also check out the osm2pgsql subproject:
120 git clone --recursive git://github.com/openstreetmap/Nominatim.git
123 The development version does not include the country grid. Download it separately:
126 wget -O Nominatim/data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
129 ### Building Nominatim
131 The code must be built in a separate directory. Create the directory and
139 Nominatim uses cmake and make for building. Assuming that you have created the
140 build at the same level as the Nominatim source directory run:
147 Now continue with [importing the database](Import.md).