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How to Configure "kdump" on Oracle Linux 7 (Doc ID 2049919.1)

Last updated on MAY 07, 2020

Applies to:

Linux OS - Version Oracle Linux 7.0 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
Review currency at 6h.Mar 2017.


Kdump is an advanced crash dumping mechanism. When 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. Since being able to analyze the core dump helps significantly to determine the exact cause of the system failure, it is strongly recommended to have this feature enabled. 

This Note explains how to configure, test, and use the kdump service in Oracle Linux (OL) 7.


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In this Document
 1.  Install the kexec-tools package if not already installed
 2. Configuring kdump
 2.1 Configuring Memory Usage
 2.2. Modify  items in configuration file /etc/kdump.conf
 3. Start  kdump daemon
 4.  kdump configuration file - /etc/sysconfig/kdump
 5.Testing  kdump

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