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Troubleshoot Oracle Linux Server Unplanned Reboot/Restart Problems (Doc ID 2289424.1)

Last updated on MAY 12, 2020

Applies to:

Linux OS - Version Oracle Linux 4.4 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86-64
Linux x86

Purpose

Your Linux server gets unplanned reboot and you need to find out the cause. Normally, you will check the system log file (/var/log/messages) to identify if there is any presented clue before the reboot.

However, in case of kernel crash, cluster software eviction or even a Hardware failure, the system log may not have chance to record the fatal error messages.

This note provide a genera guide on how you can validate cause of reboot of linux nodes in such situation.

Troubleshooting Steps

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In this Document
Purpose
Troubleshooting Steps
 1. Check Console Log first (if there is console log available when the unplanned reboot occurs)
 
2. Check if it is Kernel crash
 
3. Cluster Node eviction?

References


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