Chapter 2. Installing and Configuring kdump
2.1. Installing kdump
kdumpservice is installed and activated by default on new Red Hat Enterprise Linux 7 installations. The Anaconda installer provides a screen for kdump configuration when performing an interactive installation using the graphical or text interface. The installer screen is titled Kdump and is available from the main Installation Summary screen, and only allows limited configuration - you can only select whether kdump will be enabled and how much memory will be reserved. Information about memory requirements for kdump is available in Section B.1, “Memory Requirements for kdump”. The Kdump configuration screen in the installer is documented in the Red Hat Enterprise Linux 7 Installation Guide.
rootat a shell prompt:
yum install kexec-tools
rpm -q kexec-tools
yum install system-config-kdump
Intel IOMMUdriver is supported with
kdump. When running kernels from version 7.3 or earlier, it is advised that
Intel IOMMUsupport is disabled.