Note: these installation instructions are also available in executable form for use with vagrant under vagrant/Install-on-Ubuntu-20.sh.
Installing the Required Software
These instructions expect that you have a freshly installed Ubuntu 20.04.
Make sure all packages are are up-to-date by running:
sudo apt-get update -qq
Now you can install all packages needed for Nominatim:
sudo apt-get install -y build-essential cmake g++ libboost-dev libboost-system-dev \ libboost-filesystem-dev libexpat1-dev zlib1g-dev \ libbz2-dev libpq-dev libproj-dev \ postgresql-server-dev-12 postgresql-12-postgis-3 \ postgresql-contrib postgresql-12-postgis-3-scripts \ apache2 php php-pgsql libapache2-mod-php \ php-intl python3-setuptools python3-dev python3-pip \ python3-psycopg2 python3-tidylib
The following steps are meant to configure a fresh Ubuntu installation for use with Nominatim. You may skip some of the steps if you have your OS already configured.
Creating Dedicated User Accounts
Nominatim will run as a global service on your machine. It is therefore best to install it under its own separate user account. In the following we assume this user is called nominatim and the installation will be in /srv/nominatim. To create the user and directory run:
sudo useradd -d /srv/nominatim -s /bin/bash -m nominatim
You may find a more suitable location if you wish.
To be able to copy and paste instructions from this manual, export user name and home directory now like this:
export USERNAME=nominatim export USERHOME=/srv/nominatim
Never, ever run the installation as a root user. You have been warned.
Make sure that system servers can read from the home directory:
chmod a+x $USERHOME
Setting up PostgreSQL
Tune the postgresql configuration, which is located in
/etc/postgresql/12/main/postgresql.conf. See section Postgres Tuning in
the installation page
for the parameters to change.
Restart the postgresql service after updating this config file.
sudo systemctl restart postgresql
Finally, we need to add two postgres users: one for the user that does the import and another for the webserver which should access the database for reading only:
sudo -u postgres createuser -s $USERNAME sudo -u postgres createuser www-data
Setting up the Apache Webserver
You need to create an alias to the website directory in your apache configuration. Add a separate nominatim configuration to your webserver:
sudo tee /etc/apache2/conf-available/nominatim.conf << EOFAPACHECONF <Directory "$USERHOME/build/website"> Options FollowSymLinks MultiViews AddType text/html .php DirectoryIndex search.php Require all granted </Directory> Alias /nominatim $USERHOME/build/website EOFAPACHECONF
Then enable the configuration and restart apache
sudo a2enconf nominatim sudo systemctl restart apache2
Building and Configuration
Get the source code for the release and unpack it
cd $USERHOME wget https://nominatim.org/release/Nominatim-3.5.2.tar.bz2 tar xf Nominatim-3.5.2.tar.bz2
The code must be built in a separate directory. Create this directory, then configure and build Nominatim in there:
cd $USERHOME mkdir build cd build cmake $USERHOME/Nominatim-3.5.2 make
You need to create a minimal configuration file that tells nominatim where it is located on the webserver:
tee settings/local.php << EOF <?php @define('CONST_Website_BaseURL', '/nominatim/'); EOF
Nominatim is now ready to use. Continue with importing a database from OSM data.