prerequisites. There are also step-by-step instructions available for
the following operating systems:
+ * [Ubuntu 18.04](../appendix/Install-on-Ubuntu-18.md)
* [Ubuntu 16.04](../appendix/Install-on-Ubuntu-16.md)
* [CentOS 7.2](../appendix/Install-on-Centos-7.md)
For running tests:
* [behave](http://pythonhosted.org/behave/)
- * [Psycopg2](http://initd.org/psycopg)
+ * [Psycopg2](https://initd.org/psycopg)
* [nose](https://nose.readthedocs.io)
* [phpunit](https://phpunit.de)
For running Nominatim:
- * [PostgreSQL](http://www.postgresql.org) (9.1 or later)
- * [PostGIS](http://postgis.refractions.net) (2.0 or later)
- * [PHP](http://php.net) (5.4 or later)
+ * [PostgreSQL](https://www.postgresql.org) (9.3 or later)
+ * [PostGIS](https://postgis.org) (2.2 or later)
+ * [PHP](https://php.net) (7.0 or later)
* PHP-pgsql
* PHP-intl (bundled with PHP)
- * [PEAR::DB](http://pear.php.net/package/DB)
+ * [PEAR::DB](https://pear.php.net/package/DB)
* a webserver (apache or nginx are recommended)
For running continuous updates:
- * [pyosmium](http://osmcode.org/pyosmium/)
+ * [pyosmium](https://osmcode.org/pyosmium/) (with Python 3)
### Hardware
A minimum of 2GB of RAM is required or installation will fail. For a full
-planet import 32GB of RAM or more strongly are recommended.
+planet import 32GB of RAM or more are strongly recommended.
For a full planet install you will need at least 700GB of hard disk space
(take into account that the OSM database is growing fast). SSD disks