The SIOS Protection Suite for the Linux GUI uses the X Window System. We need to install it on each node.

  • Install x11 to the machine.
  • Install x11 related packages and enable it with the following steps:
  1. Install x11 related packages.
# yum install  xorg-x11-server-Xorg xorg-x11-xauth -y
Last metadata expiration check: 0:00:51 ago on Wed 18 Nov 2020 12:36:11 AM UTC.
Dependencies resolved.
==================================================================================================================
 Package                         Architecture    Version                    Repository                           Size
==================================================================================================================
Installing:
 xorg-x11-server-Xorg            x86_64          1.20.8-6.el8               rhel-8-appstream-rhui-rpms          1.5 M
 xorg-x11-xauth                  x86_64          1:1.0.9-12.el8             rhel-8-appstream-rhui-rpms           39 k
(snip)
  xorg-x11-drv-libinput-0.29.0-1.el8.x86_64                 xorg-x11-drv-vesa-2.4.0-3.el8.x86_64                      
  xorg-x11-server-Xorg-1.20.8-6.el8.x86_64                  xorg-x11-server-common-1.20.8-6.el8.x86_64                
  xorg-x11-xauth-1:1.0.9-12.el8.x86_64                      xorg-x11-xkb-utils-7.7-28.el8.x86_64                      
Complete! 
  1. Check the X11Forwarding parameter in /etc/ssh/sshd_config to confirm that it is set to yes. If it is not set to yes, edit the file.

  1. Assuming the system is booted to X11, start GUI sessions at start-up. If not, this step can be ignored.
# systemctl set-default graphical.target
Removed /etc/systemd/system/default.target.
Created symlink /etc/systemd/system/default.target → /usr/lib/systemd/system/graphical.target.
  1. Restart the machine.

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