How to reset iLO4 password remotely using Onboard Administrator
Did you forgot password for your iLO4 web page?You can reset the same using your OA, either using RIBCL script or by connecting to your iLO via OA and then resetting the sameMethod 1Using RIBCL scripts...
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Step by Step Guide to Install and configure VCSA 6.5 with Embedded Platform...
VCSA i.e. vCenter Server Appliance is pre-configured linux virtual machine which is bundled with VMware vCenter Server. Here we are deploying VCSA with embedded PSC.Download the VCSA ISO from VMware...
View ArticleBest practices to harden and increase security with ssh (ciphers, MACs etc)
Below are some of the selected arguments which can be used in sshd_config to harden the ssh based security. There can be many more such arguments which you can find from man page of sshd_configHostKeyA...
View ArticleSample autoyast example xml file for SLES 10, 11 and SLES 12
<?xml version="1.0"?><!DOCTYPE profile SYSTEM "/usr/share/autoinstall/dtd/profile.dtd"><profile xmlns="http://www.suse.com/1.0/yast2ns"...
View ArticleHow to migrate (move) logical volumes and volume groups from one disk to...
In this article I will show you two methods to migrate a logical volume /dev/rhel/lv1 from one disk to another without reboot assuming you have the extra disk already available on your system.Below...
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How to configure Password-less authentication from Windows to Linux using Putty
I have already written few articles to configure passwordless authentication between two Linux servers, here in this article I will share the steps to configure password less login from Windows to...
View ArticleSample kickstart partition example (RAID, LVM, Multipath, Simple,..)
Below are some of the storage template examples which can be used in kickstart for various type of installation optionSimple LayoutUsing below we do not give any requirement for any partition in terms...
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How to reset or change lost root password in RHEL / CentOS 7
In Red Hat Enterprise Linux/Cent OS 6 changing root password was quiet easy (well it is easy if you know the steps and it is hard if you don't)For RHEL / CentOS 7 the steps are completely different and...
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How to configure offline yum repository using DVD and HTTP or Apache server...
In this article I will show you the steps to configure an offline yum repository in your network using http serverIMPORTANT NOTE: I had already written an aticle to use yum with apache but that was...
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How to set up password authentication in apache (httpd) with htpasswd and...
In this article I will show you step by step guide where in you apache server you can create protected directoties which can be accessed only by respectvie users with proper access.I would assume you...
View ArticleHow to synchronise hardware clock (hwclock) with NTP in RHEL / CentOS 7
I have already written an article giving you details steps and examples on how can you make sure your hwclock displays correct time during boot up.Here I will show you the NTP configurations which must...
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How to clear/delete all the partition table from a disk or partition in Linux
Below article is a must read to understand all about partition, partition scheme and partition tableEverything you need to know about a partition, types of partition, partition schemeTo clear a...
View ArticleHow to disable or restrict direct root login via console or ssh
Below article is a must read to harden your existing sshd configuration fileBest practices to harden and increase security with ssh (ciphers, MACs etc)By default root user had direct login access to...
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How to reduce and/or add more columns or fields to top command in Linux...
I have already written an article explaining every field in the top command10 examples to help you understand top command usage in LinuxIn this article I will show you the steps using which you can...
View ArticleHow to view and increase the default pipe buffer size in Linux (F_GETPIPE_SZ,...
A pipe has a limited capacity. If the pipe is full, then a write(2) will block or fail. Applications should not rely on a particular capacity: an application should be designed so that a reading...
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How to build a signed rpm from scratch by building a source archive using Red...
Below explains every field of an rpm in detailUnderstanding an rpm packageThere are two types of RPM packages:source RPM (SRPM)binary RPMSRPMs and binary RPMs share the file format and tooling, but...
View ArticleHow to change rpmbuild (_tmppath) in a spec file (rpmbuild ignored directory)...
Below article explains in detailStep by Step Guide to build an rpm from scratch by building a source archive using Red Hat LinuxBy default when we attempt to build an rpm, the rpmbuild command will...
View ArticleHow to sign a key using gpg key (password or password-less) to an rpm in Linux
In my last article I had shared the steps to build an rpm from scratchHow to build a signed rpm from scratch by building a source archive using Red Hat LinuxIn this article I will share the steps to...
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How to execute a script at %pre, %post, %preun or %postun stage (spec file)...
RPM spec files have several sections which allow packages to run code on installation and removal. These bits of code are called scriptlets and are mostly used to update the running system with...
View ArticleTutorial/Cheatsheet: Begineer's Guide to Understanding Device Mapper...
Before starting with going into the various commands we use for multipath let me give you a overview of multipathWithout DM Multipath, each path from a server node to a storage controller is treated by...
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