Users Guide

Issues or limitations before installation
Topics:
• Installing Red Hat Enterprise Linux 7 by using the iDRAC Virtual Media does not resume if the iDRAC network is set to the shared LOM
mode
• Unable to shut down Red Hat Enterprise Linux 7 when you select Graceful shutdown option or when you press power button on
system
• Kernel panic occurs when OMSA services are started on Red Hat Enterprise Linux 7
• Unable to install Red Hat Enterprise Linux 7 in the UEFI mode
Installing Red Hat Enterprise Linux 7 by using the
iDRAC Virtual Media does not resume if the iDRAC
network is set to the shared LOM mode
Description:
When installing Red Hat Enterprise Linux 7 by using the iDRAC Virtual Media, where the iDRAC network is set to
Shared LOM mode, Red Hat Enterprise Linux 7 installer initiates a reset on the LAN on Motherboard (LOM)
devices.
Applies to: Red Hat Enterprise Linux 7
Cause: If Spanning Tree is enabled on the switch, there could be a delay in the switch port forwarding network trac.
This delay results in loss of connection to iDRAC or Virtual Media and the installation stops. After sometime the
connectivity is restored but the installer but the installation does not resume.This is an expected behavior from the
installer.
Workaround: Disable Spanning Tree Protocol (STP) or set PortFast on the uplink port to the iDRAC, during the Virtual Media
installation.
Unable to shut down Red Hat Enterprise Linux 7 when
you select Graceful shutdown option or when you
press power button on system
Description:
When you select the Graceful shutdown option from any system management interface such as iDRAC or press
the power button, the system goes to suspended state and stops all the tasks or does nothing. So, rmware
updates through iDRAC would take longer than expected as iDRAC sends out Graceful shutdown signal but the
system does not shut down.
Applies to: Red Hat Enterprise Linux 7.0, 7.1, 7.2, 7.3, 7.4, 7.5, and 7.6
Cause: By default, the Power button action is mapped to the Suspended state in the System settings.
Solution: Update the Power button action manually to perform shut down by one of the following methods:
• Go to Power settings > Suspend & Power button actions, and then select Power o for "When the Power
button is pressed"
4
Issues or limitations before installation 13