clarify redeployment

admin-guide/operations/deployment.rst

@@ -24,7 +24,7 @@ written in Python. Alternatively it is possible to use the web API directly.
 
 First, add the new node::
 
-  bob node add $FQDN $ENV local
+  bob node add $FQDN $ENV netboot
 
 
 To be able to PXE boot we need to configure at least one MAC address for the new
@@ -39,3 +39,15 @@ parameters::
   bob node set-attr $FQDN ipxe_installer=rhel72server
   bob node set-attr $FQDN puppet_env=prod
   bob node set-attr $FQDN puppet_role=role::server
+
+  
+Redeployment
+~~~~~~~~~~~~
+
+After the initial installation the boot mode has been reset from netboot to local
+so it will then always boot from the local disk. For a redeployment the netboot 
+needs to be set anew::
+
+  bob node netboot $FQDN
+  
+and after redo the PXE boot.