Configure Crash Dump on RedHat - Kdump recovery service
(Doc ID 2003139.1)
Last updated on JULY 17, 2018
Sun x64/x86 Processor Board - Version All Versions to All Versions [Release All Releases] Red Hat Enterprise Linux x64 - Version 4 to 4 [Release 4] Information in this document applies to any platform.
When the kdump crash dumping mechanism is enabled, the system is booted from the context of another kernel. This second kernel reserves a small amount of memory and its only purpose is to capture the core dump image in case the system crashes.
Being able to analyze the core dump significantly helps to determine the exact cause of the system failure, and it is therefore strongly recommended to have this feature enabled. This chapter explains how to configure, test, and use the kdump service in Red Hat Enterprise Linux, and provides a brief overview of how to analyze the resulting core dump using the crash debugging utility.
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