RHEL7 Interview Preparation – Assessment – 5
[mlw_quizmaster quiz=31]
Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base
RHEL5/6 Interview Questions : Kernel Related Questions
1. What is the difference between the update (-U) and install (-i) options when using rpm to update the kernel? 1a. You should never use the –U option because it erases the prior kernel when updating. This leaves you with no fallback kernel should your system not...
Solaris Troubleshooting Jumpstart – “Timeout waiting for ARP/RARP packet”
Below is the Common procedure used to troubleshoot the error message “Timeout waiting for ARP/RARP packet” First identify the MAC address of the interface used to boot the client for the network installation. You can also use below procedures to identify the MAC address of the...
Granting Root level access to Local user in RHEL/CentOS
Root account in a Linux machine has access to each & every file/folder on the system. So unnecessary or irresponsible use of root is always a security threat & it’s use should always be limited. Also if every user begins to use root account, it will...
‘split’: Split a file into pieces
‘split’ creates output files containing consecutive or interleaved sections of INPUT (standard input if none is given or INPUT is ‘-‘). Synopsis: split [OPTION] [INPUT [PREFIX]] By default, ‘split’ puts 1000 lines of INPUT (or whatever is left over for the last section), into each...
RHEL 6 – ISCSI Administration Series – Configuring ISCSI Server and Client
ISCSI Server Configuration on RHEL 6 Overall Steps : Install the RPM required for ISCSI Target Administration Enable the ISCSI Target Services Configure the ISCSI target to share the storage Attach Luns to the ISCSI Target Share the ISCSI Target to specific Client Machines Add...
Powerdown parameter for Solaris boxes.
I came across one unique parameter which I would like to share on our gurkulindia, specially for small business organisations where we dont have seperate power backups for DC. Has anyone noticed while working on Solaris boxes if you will power down (init 5 or poweroff...
Redhat Linux Migration: Migrating LVM2 volumes from RHEL 5 to RHEL 6
Migration Case Study One of our Server currently installed with RHEL 5 and having LVM2 volumes that are created using SAN devices. Due to some application requirements, we want to reinstall the same host with RHEL6 and migrate the original RHEL5 based LVM2 volumes to RHEL6.
Cloud Computing – It's not just another buzzword, but a near future
WHAT IS CLOUD COMPUTING? Google, Yahoo, Amazon, and others have built large, purpose-built architectures to support their applications and taught the rest of the world how to do massively scalable architectures to support compute, storage, and application services. Cloud computing is about moving services, computation and/or...
RHEL 5 Linux : configure Kdump on Red Hat Enterprise Linux 5
Installing required packages RHEL 5 has the Kdump packages installed by default. If for any reason they are not installed, you need to install the packages “kexec-tools-.rpm” and “system-config-kdump-.rpm” with the following commands: # rpm -ivh kexec-tools-.rpm system-config-kdump-.rpm or, if your system is registered at...
