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 * [nlohmann/json](https://json.nlohmann.me/)
39 * [Boost libraries](https://www.boost.org/), including system and filesystem
40 * PostgreSQL client libraries
41 * a recent C++ compiler (gcc 5+ or Clang 3.8+)
43 For running Nominatim:
45 * [PostgreSQL](https://www.postgresql.org) (9.6+ will work, 11+ strongly recommended)
46 * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
47 * [Python 3](https://www.python.org/) (3.7+)
48 * [Psycopg2](https://www.psycopg.org) (2.7+)
49 * [Python Dotenv](https://github.com/theskumar/python-dotenv)
50 * [psutil](https://github.com/giampaolo/psutil)
51 * [Jinja2](https://palletsprojects.com/p/jinja/)
52 * [SQLAlchemy](https://www.sqlalchemy.org/) (1.4.31+ with greenlet support)
53 * [asyncpg](https://magicstack.github.io/asyncpg) (0.8+)
54 * [PyICU](https://pypi.org/project/PyICU/)
55 * [PyYaml](https://pyyaml.org/) (5.1+)
56 * [datrie](https://github.com/pytries/datrie)
58 When running the PHP frontend:
60 * [PHP](https://php.net) (7.3+)
62 * PHP-intl (bundled with PHP)
64 For running continuous updates:
66 * [pyosmium](https://osmcode.org/pyosmium/)
68 For running the experimental Python frontend:
70 * one of the following web frameworks:
71 * [falcon](https://falconframework.org/) (3.0+)
72 * [starlette](https://www.starlette.io/)
73 * [uvicorn](https://www.uvicorn.org/)
75 For dependencies for running tests and building documentation, see
76 the [Development section](../develop/Development-Environment.md).
80 A minimum of 2GB of RAM is required or installation will fail. For a full
81 planet import 128GB of RAM or more are strongly recommended. Do not report
82 out of memory problems if you have less than 64GB RAM.
84 For a full planet install you will need at least 1TB of hard disk space.
85 Take into account that the OSM database is growing fast.
86 Fast disks are essential. Using NVME disks is recommended.
88 Even on a well configured machine the import of a full planet takes
89 around 2 days. When using traditional SSDs, 4-5 days are more realistic.
91 ## Tuning the PostgreSQL database
93 You might want to tune your PostgreSQL installation so that the later steps
94 make best use of your hardware. You should tune the following parameters in
95 your `postgresql.conf` file.
98 maintenance_work_mem = (10GB)
99 autovacuum_work_mem = 2GB
101 effective_cache_size = (24GB)
102 synchronous_commit = off
104 checkpoint_timeout = 10min
105 checkpoint_completion_target = 0.9
107 The numbers in brackets behind some parameters seem to work fine for
108 64GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
109 means that PostgreSQL needs to run checkpoints less often but it does require
110 the additional space on your disk.
112 Autovacuum must not be switched off because it ensures that the
113 tables are frequently analysed. If your machine has very little memory,
114 you might consider setting:
116 autovacuum_max_workers = 1
118 and even reduce `autovacuum_work_mem` further. This will reduce the amount
119 of memory that autovacuum takes away from the import process.
121 ## Downloading and building Nominatim
123 ### Downloading the latest release
125 You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
126 The release contains all necessary files. Just unpack it.
128 ### Downloading the latest development version
130 If you want to install latest development version from github, make sure to
131 also check out the osm2pgsql subproject:
134 git clone --recursive https://github.com/openstreetmap/Nominatim.git
137 The development version does not include the country grid. Download it separately:
140 wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/country_grid.sql.gz
143 ### Building Nominatim
145 The code must be built in a separate directory. Create the directory and
153 Nominatim uses cmake and make for building. Assuming that you have created the
154 build at the same level as the Nominatim source directory run:
163 The default installation no longer compiles the PostgreSQL module that
164 is needed for the legacy tokenizer from older Nominatim versions. If you
165 are upgrading an older database or want to run the
166 [legacy tokenizer](../customize/Tokenizers.md#legacy-tokenizer) for
167 some other reason, you need to enable the PostgreSQL module via
168 cmake: `cmake -DBUILD_MODULE=on ../Nominatim`. To compile the module
169 you need to have the server development headers for PostgreSQL installed.
170 On Ubuntu/Debian run: `sudo apt install postgresql-server-dev-<postgresql version>`
173 Nominatim installs itself into `/usr/local` per default. To choose a different
174 installation directory add `-DCMAKE_INSTALL_PREFIX=<install root>` to the
175 cmake command. Make sure that the `bin` directory is available in your path
179 export PATH=<install root>/bin:$PATH
182 Now continue with [importing the database](Import.md).