updates of this weeks preprod

admin-guide/puppet/roles/base.rst

@@ -24,6 +24,7 @@ enable_epics               bool      hiera('base::enable_epics')
 enable_filecopy            bool      hiera('base::enable_filecopy')
 enable_ganglia             bool      hiera('base::enable_ganglia')
 enable_icinga              bool      hiera('base::enable_icinga')
+enable_iommu               bool      hiera('base::enable_iommu')
 enable_kdump_client        bool      hiera('base::enable_kdump_client')
 enable_local_homes         bool      hiera('base::local_homes', undef),
 enable_mta                 bool      hiera('base::enable_mta', undef),
@@ -140,6 +141,12 @@ Determines whether to include the :doc:`icinga_client
 necessary for Icinga-based monitoring.
 
 
+``enable_iommu``
+~~~~~~~~~~~~~~~~~
+
+It enables the IOMMU support in the kernel on boot. The node needs to be rebooted for this change to become active.
+
+
 ``enable_kdump_client``
 ~~~~~~~~~~~~~~~~~~~~~~~
 

rhel8/desktop.md

@@ -8,7 +8,7 @@ Following software is involved in getting the desktop on Linux up and running.
   - **Xorg**: good ol' Unix X Server with network redirection
   - **Wayland**: new and modern
 - **Display Manager** shows up at startup to authenticate the user and then start the desktop session
-  - **gdm** Gnome Display Manager is default on RHEL 8, but NoMachine NX cannot start Gnome with it
+  - **gdm** Gnome Display Manager is default on RHEL 8
   - **lightdm** is very flexible, but automatic Gnome screen lock does not work with it, manual locking would be needed (`dm_tool lock`)
   - **sddm** the Simple Desktop Display Manager from the KDE world fails due to a kernel bug on RHEL 8.6
 - **Greeter**: user interface part of the display manager, e.g. for `lightdm` it is exchangable
@@ -35,10 +35,6 @@ Note when changing the default Session Manager, previous users will still get th
 - `/var/cache/lightdm/dmrc/*.dmrc` (for `lightdm`)
 - `/var/lib/lightdm/.cache/lightdm-gtk-greeter/state` (for `lightdm` with `lightdm-gtk-greeter`)
 
-### NoMachine NX
-As NoMachine requires `lightdm` to start Gnome ([bug](https://kb.nomachine.com/TR08Q09375)), `lightdm` is used on these systems.
-It uses a custom patched `lightdm-gtk-greeter` to allow to select only the configured keyboard layouts and to have a configurable default session (PS: the patches have been merged upstream very fast, yeah!).
-
 ### XFCE
 XFCE is installed when `base::enable_xfce: true` is set in Hiera.
 It then is also used by default with `base::xfce_default: true` or `desktop::session_manager: xfce`.