Category: Linux Admin

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Linux Admin Troubleshooting Reference – Kernel Panic and System Crash – Redhat Enterprise Linux (RHEL6)

What is the meaning of a Linux System Crash?   Crash is a generic term used usually to say that the system has come to halt and no progress is observed. The system seems unresponsive or has already rebooted. Kernel Panic – A voluntary halt to...

7

Linux – Online configuration of new SAN disks to create new sybase raw volumes, using LVM.

As part of regular System Admin task we were asked to configure new storage to an existing sybase server without disturbing the existing storage and expecting no downtime for the existing production server. All necessary storage LUNS were already allocated by the Storage team as mentioned...

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Linux : Identifying Disk Errors in Linux

Below procedure can be used to identify the hard disk errors in linux operating system. Execute the following command to identify the available disk configuration   # /bin/more /proc/scsi/scsi Output will include all the currently available disks to the linux, and the output vary depending on...

1

Mastering Grub – Part 2 – Grub Configurations

1. Grub Configurations GRUB is configured using ‘grub.cfg’, usually located under ‘/boot/grub’. This file is quite flexible, but most users will not need to write the whole thing by hand. 1.1  Simple configuration handling The program ‘grub2-mkconfig’ generates ‘grub.cfg’ upgrading a distribution, and will discover available...

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