add part for anaconda/conda

_toc.yml

@@ -57,6 +57,7 @@ chapters:
           - file: admin-guide/configuration/icinga2
           - file: admin-guide/configuration/packages
           - file: admin-guide/configuration/python
+          - file: admin-guide/configuration/conda
           - file: admin-guide/configuration/package_updates
           - file: admin-guide/configuration/package_repositories
           - file: admin-guide/configuration/services

admin-guide/configuration/conda.md

@@ -0,0 +1,60 @@
+# Conda / Anaconda
+
+Conda / Anaconda (https://conda.org) is a package manager that can be used to easily create tailored Python environments without having required C/... binaries of some packages installed on the local system. (i.e. conda will take care that required binaries are installed into the environment)
+
+```{warning}
+Due to certain license restrictions the usage of Anaconda at PSI is not allowed without obtaining a professional license from Anaconda.com!
+
+However the usage of the command `conda` and/or of packages from conda-forge is still possible - see below ...
+```
+
+This guide explains how to install and configure conda in accordance to the Anaconda.com license terms.
+
+
+## Installation
+On a standard Linux system the conda package can be simply installed via a:
+
+```
+yum install conda
+```
+
+To instruct puppet to install the package you can have following hiera config:
+
+```yaml
+base::pkg_group::extra:
+  - 'conda'
+
+base::package_groups:
+  - 'extra'
+```
+
+## Configuration
+
+To overwrite the default configuration of conda (which would violate the license because packages would be installed from anaconda.org by default) following config file needs to be deployed in `/etc/conda/condarc.d/base.yml` (or similar):
+
+```yaml
+channels:
+- conda-forge
+
+# Show channel URLs when displaying what is going to be downloaded
+# and in 'conda list'. The default is False.
+show_channel_urls: True
+always_copy: true
+```
+
+To place the file via Puppet/Hiera you can have following configuration:
+
+```yaml
+files::files:
+  /etc/conda/condarc.d/base.yml:
+    content: | 
+      channels:
+      - conda-forge
+
+      # Show channel URLs when displaying what is going to be downloaded
+      # and in 'conda list'. The default is False.
+      show_channel_urls: True
+      always_copy: true
+```
+
+Afterwards conda environments can be created in a license conformed way as documented at https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html