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Red Hat Training

A Red Hat training course is available for Red Hat Enterprise Linux Enabling the Service

To start the kdump daemon at boot time, type the following at a shell prompt as root:
~]# chkconfig kdump on
This will enable the service for runlevels 2, 3, 4, and 5. Similarly, typing chkconfig kdump off will disable it for all runlevels. To start the service in the current session, use the following command as root:
~]# service kdump start
No kdump initial ramdisk found.                            [WARNING]
Rebuilding /boot/initrd-2.6.18-194.8.1.el5kdump.img
Starting kdump:                                            [  OK  ]
For more information on runlevels and configuring services in general, refer to Chapter 18, Controlling Access to Services.