4 This page contains generic installation instructions for Nominatim and its
5 prerequisites. There are also step-by-step instructions available for
6 the following operating systems:
8 * [Ubuntu 16.04](install-on-ubuntu-16.md)
9 * [CentOS 7.2](install-on-centos-7.md)
11 These OS-specific instructions can also be found in executable form
12 in the `vagrant/` directory.
21 * [cmake](https://cmake.org/)
22 * [libxml2](http://xmlsoft.org/)
23 * a recent C++ compiler
25 Nominatim comes with its own version of osm2pgsql. See the
26 [osm2pgsql README](../osm2pgsql/README.md) for additional dependencies
27 required for compiling osm2pgsql.
31 * [lettuce](http://lettuce.it)
32 * [Shapely](http://toblerity.org/shapely/index.html)
33 * [Psycopg2](http://initd.org/psycopg)
34 * [nose](https://nose.readthedocs.io)
35 * [phpunit](https://phpunit.de)
37 For running Nominatim:
39 * [PostgreSQL](http://www.postgresql.org) (9.1 or later)
40 * [PostGIS](http://postgis.refractions.net) (2.0 or later)
41 * [PHP](http://php.net) (5.4 or later)
43 * [PEAR::DB](http://pear.php.net/package/DB)
44 * a webserver (apache or nginx are recommended)
46 For running continuous updates:
48 * [osmosis](http://wiki.openstreetmap.org/wiki/Osmosis)
52 A minimum of 2GB of RAM is required or installation will fail. For a full
53 planet import 32GB of RAM or more strongly are recommended.
55 For a full planet install you will need about 500GB of hard disk space (as of
56 June 2016, take into account that the OSM database is growing fast). SSD disks
57 will help considerably to speed up import and queries.
59 On a 6-core machine with 32GB RAM and SSDs the import of a full planet takes
60 a bit more than 2 days. Without SSDs 7-8 days are more realistic.
68 You might want to tune your PostgreSQL installation so that the later steps
69 make best use of your hardware. You should tune the following parameters in
70 your `postgresql.conf` file.
73 maintenance_work_mem (10GB)
75 effective_cache_size (24GB)
76 synchronous_commit = off
77 checkpoint_segments = 100 # only for postgresql <= 9.4
78 checkpoint_timeout = 10min
79 checkpoint_completion_target = 0.9
81 The numbers in brackets behind some parameters seem to work fine for
82 32GB RAM machine. Adjust to your setup.
84 For the initial import, you should also set:
87 full_page_writes = off
89 Don't forget to reenable them after the initial import or you risk database
90 corruption. Autovacuum must not be switched off because it ensures that the
91 tables are frequently analysed.
95 The `website/` directory in the build directory contains the configured
96 website. Include the directory into your webbrowser to serve php files
99 #### Configure for use with Apache
101 Make sure your Apache configuration contains the required permissions for the
102 directory and create an alias:
104 <Directory "/srv/nominatim/build/website">
105 Options FollowSymLinks MultiViews
106 AddType text/html .php
109 Alias /nominatim /srv/nominatim/build/website
111 `/srv/nominatim/build` should be replaced with the location of your
114 After making changes in the apache config you need to restart apache.
115 The website should now be available on http://localhost/nominatim.
117 #### Configure for use with Nginx
119 Use php-fpm as a deamon for serving PHP cgi. Install php-fpm together with nginx.
121 By default php listens on a network socket. If you want it to listen to a
122 Unix socket instead, change the pool configuration (`pool.d/www.conf`) as
125 ; Comment out the tcp listener and add the unix socket
126 ;listen = 127.0.0.1:9000
127 listen = /var/run/php5-fpm.sock
129 ; Ensure that the daemon runs as the correct user
130 listen.owner = www-data
131 listen.group = www-data
134 Tell nginx that php files are special and to fastcgi_pass to the php-fpm
135 unix socket by adding the location definition to the default configuration.
137 location ~ [^/]\.php(/|$) {
138 fastcgi_split_path_info ^(.+?\.php)(/.*)$;
139 if (!-f $document_root$fastcgi_script_name) {
142 fastcgi_pass unix:/var/run/php5-fpm.sock;
143 fastcgi_index index.php;
144 include fastcgi.conf;
147 Restart the nginx and php5-fpm services and the website should now be available
148 on http://localhost/.
151 Now continue with [importing the database](Import_and_update.md).