X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/bb9bb40287437b8d46c8930b73cb9ab78d8ea6fb..d5d9445cfd311f262608fe5dba464cb1469f6d7b:/docs/admin/Installation.md

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index d6232c8b..1989a9c0 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -4,8 +4,9 @@ This page contains generic installation instructions for Nominatim and its
 prerequisites. There are also step-by-step instructions available for
 the following operating systems:
 
+  * [Ubuntu 20.04](../appendix/Install-on-Ubuntu-20.md)
   * [Ubuntu 18.04](../appendix/Install-on-Ubuntu-18.md)
-  * [Ubuntu 16.04](../appendix/Install-on-Ubuntu-16.md)
+  * [CentOS 8](../appendix/Install-on-Centos-8.md)
   * [CentOS 7.2](../appendix/Install-on-Centos-7.md)
 
 These OS-specific instructions can also be found in executable form
@@ -35,8 +36,8 @@ For compiling:
 
 For running Nominatim:
 
-  * [PostgreSQL](https://www.postgresql.org) (9.3 or later)
-  * [PostGIS](https://postgis.org) (2.2 or later)
+  * [PostgreSQL](https://www.postgresql.org) (9.3 - 11)
+  * [PostGIS](https://postgis.org) (2.2 - 2.5)
   * [Python 3](https://www.python.org/)
   * [Psycopg2](https://initd.org/psycopg)
   * [PHP](https://php.net) (7.0 or later)
@@ -44,6 +45,10 @@ For running Nominatim:
   * PHP-intl (bundled with PHP)
   * a webserver (apache or nginx are recommended)
 
+!!! danger "Important"
+    Postgresql 12+ and Postgis 3.0+ are known to cause performance issues. They are
+    not recommended for a production installation at the moment.
+
 For running continuous updates:
 
   * [pyosmium](https://osmcode.org/pyosmium/) (with Python 3)
@@ -52,7 +57,7 @@ For running tests:
 
   * [behave](http://pythonhosted.org/behave/)
   * [nose](https://nose.readthedocs.io)
-  * [phpunit](https://phpunit.de)
+  * [phpunit](https://phpunit.de) >= 7.3
 
 ### Hardware