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 22.04](../appendix/Install-on-Ubuntu-22.md)
8 * [Ubuntu 20.04](../appendix/Install-on-Ubuntu-20.md)
10 These OS-specific instructions can also be found in executable form
11 in the `vagrant/` directory.
13 Users have created instructions for other frameworks. We haven't tested those
14 and can't offer support.
16 * [Docker](https://github.com/mediagis/nominatim-docker)
17 * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)
18 * [Kubernetes with Helm](https://github.com/robjuz/helm-charts/blob/master/charts/nominatim/README.md)
19 * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
26 For larger installations you **must have** PostgreSQL 11+ and PostGIS 3+
27 otherwise import and queries will be slow to the point of being unusable.
28 Query performance has marked improvements with PostgreSQL 13+ and PostGIS 3.2+.
32 * [cmake](https://cmake.org/)
33 * [expat](https://libexpat.github.io/)
34 * [proj](https://proj.org/)
35 * [bzip2](http://www.bzip.org/)
36 * [zlib](https://www.zlib.net/)
37 * [ICU](http://site.icu-project.org/)
38 * [Boost libraries](https://www.boost.org/), including system and filesystem
39 * PostgreSQL client libraries
40 * a recent C++ compiler (gcc 5+ or Clang 3.8+)
42 For running Nominatim:
44 * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
45 * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
46 * [Python 3](https://www.python.org/) (3.7+)
47 * [Psycopg2](https://www.psycopg.org) (2.7+)
48 * [Python Dotenv](https://github.com/theskumar/python-dotenv)
49 * [psutil](https://github.com/giampaolo/psutil)
50 * [Jinja2](https://palletsprojects.com/p/jinja/)
51 * [SQLAlchemy](https://www.sqlalchemy.org/) (1.4.31+ with greenlet support)
52 * [asyncpg](https://magicstack.github.io/asyncpg) (0.8+)
53 * [PyICU](https://pypi.org/project/PyICU/)
54 * [PyYaml](https://pyyaml.org/) (5.1+)
55 * [datrie](https://github.com/pytries/datrie)
56 * [PHP](https://php.net) (7.3+)
58 * PHP-intl (bundled with PHP)
60 For running continuous updates:
62 * [pyosmium](https://osmcode.org/pyosmium/)
64 For running the experimental Python frontend:
66 * one of the following web frameworks:
67 * [falcon](https://falconframework.org/) (3.0+)
68 * [starlette](https://www.starlette.io/)
69 * [uvicorn](https://www.uvicorn.org/)
71 For dependencies for running tests and building documentation, see
72 the [Development section](../develop/Development-Environment.md).
76 A minimum of 2GB of RAM is required or installation will fail. For a full
77 planet import 128GB of RAM or more are strongly recommended. Do not report
78 out of memory problems if you have less than 64GB RAM.
80 For a full planet install you will need at least 1TB of hard disk space.
81 Take into account that the OSM database is growing fast.
82 Fast disks are essential. Using NVME disks is recommended.
84 Even on a well configured machine the import of a full planet takes
85 around 2 days. On traditional spinning disks, 7-8 days are more realistic.
87 ## Tuning the PostgreSQL database
89 You might want to tune your PostgreSQL installation so that the later steps
90 make best use of your hardware. You should tune the following parameters in
91 your `postgresql.conf` file.
94 maintenance_work_mem = (10GB)
95 autovacuum_work_mem = 2GB
97 effective_cache_size = (24GB)
98 synchronous_commit = off
100 checkpoint_timeout = 10min
101 checkpoint_completion_target = 0.9
103 The numbers in brackets behind some parameters seem to work fine for
104 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
105 means that PostgreSQL needs to run checkpoints less often but it does require
106 the additional space on your disk.
108 Autovacuum must not be switched off because it ensures that the
109 tables are frequently analysed. If your machine has very little memory,
110 you might consider setting:
112 autovacuum_max_workers = 1
114 and even reduce `autovacuum_work_mem` further. This will reduce the amount
115 of memory that autovacuum takes away from the import process.
117 For the initial import, you should also set:
120 full_page_writes = off
122 Don't forget to re-enable them after the initial import or you risk database
126 ## Downloading and building Nominatim
128 ### Downloading the latest release
130 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
131 The release contains all necessary files. Just unpack it.
133 ### Downloading the latest development version
135 If you want to install latest development version from github, make sure to
136 also check out the osm2pgsql subproject:
139 git clone --recursive https://github.com/openstreetmap/Nominatim.git
142 The development version does not include the country grid. Download it separately:
145 wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/country_grid.sql.gz
148 ### Building Nominatim
150 The code must be built in a separate directory. Create the directory and
158 Nominatim uses cmake and make for building. Assuming that you have created the
159 build at the same level as the Nominatim source directory run:
168 The default installation no longer compiles the PostgreSQL module that
169 is needed for the legacy tokenizer from older Nominatim versions. If you
170 are upgrading an older database or want to run the
171 [legacy tokenizer](../customize/Tokenizers.md#legacy-tokenizer) for
172 some other reason, you need to enable the PostgreSQL module via
173 cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
174 you need to have the server development headers for PostgreSQL installed.
175 On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
178 Nominatim installs itself into `/usr/local` per default. To choose a different
179 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
180 cmake command. Make sure that the `bin` directory is available in your path
184 export PATH=<install root>/bin:$PATH
187 Now continue with [importing the database](Import.md).