Add requested changes from !194

docs/maintenance.md

@@ -6,9 +6,11 @@ Please take care to backup the following locations:
 
 ### On your provisioning machine
 
-* Your cluster config directory where you put your `inventory.yml` and
-  `settings.yml` files. This is also the place where the generated secrets
-  are stored during installation. It's located under at `openappstack/clusters`
+* Your cluster config directory, located in the top-level sub-directory
+  `clusters` in your clone of the openappstack git repository.
+  Here you can find all the files generated during the `create` and `install`
+  c ommands of the CLI, together with the generated secrets are stored during
+  installation.
 
 ### On your cluster
 
@@ -16,9 +18,8 @@ Please take care to backup the following locations:
   This is the place all persistant volumes are stored.
   Some are more important than others, if you want to hand-pick what volumes
   to backup, use `kubectl get pvc --all-namespaces` to see which volumes are
-  used by what application. The prometheus volumes usually take the most space
-  for retaining metrics.
-  We recommend backing up the whole directory.
+  used by what application. The prometheus and alertmanager volume contain
+  metrics, so you could choose to not back those up to save space.
 * The [rke](https://rancher.com/docs/rke/latest/en/) directory `/var/lib/OpenAppStack/rke`
   where the `rke` config and state file of your cluster is stored.
 * At this moment, [recurring, automated etcd snapshots are not configured](https://open.greenhost.net/openappstack/openappstack/issues/453).
@@ -31,4 +32,5 @@ backup the whole `/var/lib/OpenAppStack/` directory.
 
 ## Restore
 
-Restore instructions will follow, please reach out to us if you need assistance.
+Restore instructions will follow, please [reach out to us](https://openappstack.net/contact.html)
+if you need assistance.