Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Linux Admin Reference : Yum Quick Reference – Redhat Enterprise Linux

Yum or “Yellow dog Update, Modified” is a package manager that was developed by Duke University to improve the installation of RPMs. Yum searches several repositories for packages and their dependencies so they may be installed together in an effort to alleviate dependency issues. Red Hat...

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Linux Admin Reference – RedHat Linux Grub Loader

1. How to re-install GRUB bootloader on the Master Boot Record(MBR) in rescue mode? The most common reason to reinstall GRUB is  a disk failure and an accidental overwrite on MBR . In addition, there is also a hardware-specific reason that a SATA controller is not running in the...

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Linux Admin Reference – LVM Administration – Redhat Enterprise Linux

1. How do I reduce LVM logical voulme in Red Hat Enterprise linux? First of all make sure to have sufficient disk space available before reducing logical volume (otherwise it would result in data loss). Also, make sure to have valid data backup before going forward...

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Solaris host level SAN migration from Clariion to VMAX – Hands on Lab

During the past two to three years,  many organisations started migrating their Server storage from Old legacy SAN devices ( e.g. EMC Clariion )  to new  powerful SAN storage ( e.g. EMC Symetrix VMAX) because of the low performance and maintenance costs involved with legacy storage....

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Linux Samba Server integration with Windows Active Directory – Part 2

This is second part of my earlier post “Linux Samba Server integration with Windows Active Directory”. In this post I will be  showing you the procedure to configure the Samba servers with two different shares, one share is having access to only specific samba user whereas...

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Hands on LAB – Configuring LAMP STACK for Web Applications- cookbook

  The Internet World , we live today ,completely filled with web pages and applications. In the initial days, web sites were just limited to static html pages and the traditional web servers like Apache fulfilled the purpose. But now the current trend is dynamic web pages which...

 
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