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Install Nominatim in a virtual machine for development and testing

This document describes how you can install Nominatim inside a Ubuntu 16 virtual machine on your desktop/laptop (host machine). The goal is to give you a development environment to easily edit code and run the test suite without affecting the rest of your system.

The installation can run largely unsupervised. You should expect 1h from start to finish depending on how fast your computer and download speed is.

Prerequisites

  1. Virtualbox

  2. Vagrant

  3. Nominatim

     git clone --recursive https://github.com/openstreetmap/Nominatim.git

    If you forgot --recursive, it you can later load the submodules using

     git submodule init
 git submodule update

Installation

  1. Start the virtual machine

     vagrant up ubuntu

  2. Log into the virtual machine

     vagrant ssh ubuntu

  3. Import a small country (Monaco)

    See the FAQ how to skip this step and point Nominatim to an existing database.

    # inside the virtual machine:
cd build
wget --no-verbose --output-document=/tmp/monaco.osm.pbf http://download.geofabrik.de/europe/monaco-latest.osm.pbf
./utils/setup.php --osm-file /tmp/monaco.osm.pbf --osm2pgsql-cache 1000 --all 2>&1 | tee monaco.$$.log

    To repeat an import you'd need to delete the database first

     dropdb --if-exists nominatim

Development

Vagrant maps the virtual machine's port 8089 to your host machine. Thus you can see Nominatim in action on locahost:8089.

You edit code on your host machine in any editor you like. There is no need to restart any software: just refresh your browser window.

Note that the webserver uses files from the /build directory. If you change files in Nominatim/website or Nominatim/utils for example you first need to copy them into the /build directory by running the cmake step from the installation.

PHP errors are written to /var/log/apache2/error.log.

With echo and var_dump() you write into the output (HTML/XML/JSON) when you either add &debug=1 to the URL (preferred) or set @define('CONST_Debug', true); in settings/local.php.

In the Python BDD test you can use logger.info() for temporary debug statements.

Running unit tests

cd ~/Nominatim/tests/php
phpunit ./

Running PHP code style tests

cd ~/Nominatim
phpcs --colors .

Running functional tests

Tests in test/bdd/db and test/bdd/osm2pgsql have to pass 100%. Other tests might require full planet-wide data. Sadly even if you have your own planet-wide data there will be enough differences to the openstreetmap.org installation to cause false positives in the other tests (see FAQ).

To run the full test suite

cd ~/Nominatim/test/bdd
behave -DBUILDDIR=/home/vagrant/build/ db osm2pgsql

To run a single file

behave -DBUILDDIR=/home/vagrant/build/ api/lookup/simple.feature

Or a single test by line number

behave -DBUILDDIR=/home/vagrant/build/ api/lookup/simple.feature:34

To run specific groups of tests you can add tags just before the Scenario line, e.g.

@bug-34
Scenario: address lookup for non-existing or invalid node, way, relation

and then

behave -DBUILDDIR=/home/vagrant/build/ --tags @bug-34

FAQ

Will it run on Windows?

Yes, Vagrant and Virtualbox can be installed on MS Windows just fine. You need a 64bit version of Windows.

Why Monaco, can I use another country?

Of course! The Monaco import takes less than 30 minutes and works with 2GB RAM.

Will the results be the same as those from nominatim.openstreetmap.org?

No. Long running Nominatim installations will differ once new import features (or bug fixes) get added since those usually only get applied to new/changed data.

Also this document skips the optional Wikipedia data import which affects ranking of search results. See Nominatim installation for details.

Why Ubuntu? Can I test CentOS/Fedora/CoreOS/FreeBSD?

There is a Vagrant script for CentOS available, but the Nominatim directory isn't symlinked/mounted to the host which makes development trickier. We used it mainly for debugging installation with SELinux.

In general Nominatim will run in the other environments. The installation steps are slightly different, e.g. the name of the package manager, Apache2 package name, location of files. We chose Ubuntu because that is closest to the nominatim.openstreetmap.org production environment.

You can configure/download other Vagrant boxes from https://app.vagrantup.com/boxes/search.

How can I connect to an existing database?

Let's say you have a Postgres database named nominatim_it on server your-server.com and port 5432. The Postgres username is postgres. You can edit settings/local.php and point Nominatim to it.

pgsql:host=your-server.com;port=5432;user=postgres;dbname=nominatim_it

No data import or restarting necessary.

If the Postgres installation is behind a firewall, you can try

ssh -L 9999:localhost:5432 your-username@your-server.com

inside the virtual machine. It will map the port to localhost:9999 and then you edit settings/local.php with

@define('CONST_Database_DSN', 'pgsql:host=localhost;port=9999;user=postgres;dbname=nominatim_it');

To access postgres directly remember to specify the hostname, e.g. psql --host localhost --port 9999 nominatim_it

My computer is slow and the import takes too long. Can I start the virtual machine "in the cloud"?

Yes. It's possible to start the virtual machine on Amazon AWS (plugin) or DigitalOcean (plugin).