OP#436 add documentation for user access

README.md

@@ -8,6 +8,7 @@
   - [WARNING](#warning)
   - [Features](#features)
     - [configuring user access](#configuring-user-access)
+    - [Additional users](#additional-users)
   - [Repo Documentation](#repo-documentation)
   - [Dependencies](#dependencies)
   - [Deployment](#deployment)
@@ -40,7 +41,33 @@ At this stage, the module is being redeveloped and being built to the latest sta
 - if `ng_include_nrpe`is set to `true`, the confdroid_nrpe module is automatically applied on clients ([confdroid_nrpe](https://sourcecode.confdroid.com/confdroid/confdroid_nrpe) must be in the catalogue then)
 
 ### configuring user access
-ToDo
+
+Main access to the user interface requires defining an administrative user and password via `ng_main_user` and `ng_main_password`. The password should be encrypted like this: 
+
+```bash
+htpasswd -B -n  testuser
+New password: 
+Re-type new password: 
+```
+
+This results in
+
+```text
+testuser: $2y$05$rNy/P22OfYZlpdEPnCAIg.OUizRD34P7pDRwUGiaYjH44PcRuZ2ia
+```
+
+Use that value to override the default password in ENC or Hiera, if you use it.
+
+### Additional users
+
+The main user is automatically created. If you want to add more users, this should be done via the define confdroid_nagios::server::access. In your control repo, site.pp etc. address the access define like this:
+
+```puppet
+confdroid_nagios::server::access { 'example':
+  ng_htpasswd_user     => 'example_user',
+  ng_htpasswd_password => 'example_password_encrypted'
+}
+```
 
 ## Repo Documentation