X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/73953cbac95847740339d7a5ee3c0e5f142d93c5..2cdbcac353805767df011edc494f8067f9409f63:/docs/admin/Installation.md

diff --git a/docs/admin/Installation.md b/docs/admin/Installation.md
index 76af39c6..6b63b0d3 100644
--- a/docs/admin/Installation.md
+++ b/docs/admin/Installation.md
@@ -7,7 +7,6 @@ the following operating systems:
   * [Ubuntu 20.04](../appendix/Install-on-Ubuntu-20.md)
   * [Ubuntu 18.04](../appendix/Install-on-Ubuntu-18.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
 in the `vagrant/` directory.
@@ -17,12 +16,17 @@ and can't offer support.
 
   * [Docker](https://github.com/mediagis/nominatim-docker)
   * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)
+  * [Kubernetes with Helm](https://github.com/robjuz/helm-charts/blob/master/charts/nominatim/README.md)
   * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
 
 ## Prerequisites
 
 ### Software
 
+!!! Warning
+    For larger installations you **must have** PostgreSQL 11+ and Postgis 3+
+    otherwise import and queries will be slow to the point of being unusable.
+
 For compiling:
 
   * [cmake](https://cmake.org/)
@@ -37,8 +41,8 @@ For compiling:
 
 For running Nominatim:
 
-  * [PostgreSQL](https://www.postgresql.org) (9.3+ will work, 11+ strongly recommended)
-  * [PostGIS](https://postgis.net) (2.2+)
+  * [PostgreSQL](https://www.postgresql.org) (9.5+ will work, 11+ strongly recommended)
+  * [PostGIS](https://postgis.net) (2.2+ will work, 3.0+ strongly recommended)
   * [Python 3](https://www.python.org/) (3.6+)
   * [Psycopg2](https://www.psycopg.org) (2.7+)
   * [Python Dotenv](https://github.com/theskumar/python-dotenv)