Today I came across very specific problem wherein the application was stopped/shutdown but port used by the application was not released. I tried to find out the process which is using that port but unable to find using normal commands (ps etc.). Then I came across a very...
Linux Admin / Redhat Enterprise Linux 6 / Redhat Linux Kernel
by Ramdev · Published September 30, 2013 · Last modified July 23, 2016
This is continuation post to our earlier kernel panic reference post ( Redhat Enterprise Linux 6 – Kernel Panic and System Crash – Troubleshooting Quick Reference ) where we have discussed several types of kernel panic issues and their reasons. And in this post I will be...
Redhat Cluster Services / RHCS Configurations / RHCS Fundamentals
by Ramdev · Published September 27, 2013
In our previous post ( RHCS : GFS2 Filesystem configuration in Clustered Environment – Part1 ) we have discussed about the introduction and initial configuration of GFS2. And this post we will go through the administration tasks related to GFS2 filesystems. And this post doesn’t cover entire admin tasks...
Redhat Cluster Services / RHCS Fundamentals
by Ramdev · Published September 20, 2013 · Last modified July 2, 2015
What is the Purpose of LVM in Clustered Environment and What are the Limitations? We all know that that purpose of LVM is to create an abstraction layer over physical storage, allowing the creation of logical storage volumes. This provides much greater flexibility in a number...
Solaris Troubleshooting / Unix Intermediate
by Ramdev · Published September 8, 2013 · Last modified July 2, 2015
The utmpx and wtmpx files are extended database files that have superseded the obsolete utmp and wtmp database files. The utmpx database contains user access and accounting information for commands such as who, write, and login. The wtmpx database contains the history of user access and...
Solaris Troubleshooting / Unix Intermediate
by Ramdev · Published September 4, 2013 · Last modified July 2, 2015
It is common for Server environments to configure boot disks on external disks so that they can be easily migrated/moved for different reasons. During those scenarios, sometime we will have trouble to boot from the SAN devices and we will encounter with below kind of errors....
Career Guidance / Unix Beginners
by Ramdev · Published August 29, 2013 · Last modified January 2, 2014
One thing you can do before you finish this weekend, just make sure you have a completed linked-in profile, with proper skills added to your profile. And let your skills endorsed by your connections that will increase your chances to get noticed by recruiters and also...
This is a continuation post for my previous puppetlabs introduction post. In this post, I am explaining you two simple practical scenarios that might help you to get started with puppetlabs. Initially, I thought of sharing information about the core components of the puppet, but...
AIX Beginners Guides / Beginners Lessons / Unix Beginners
by Ramdev · Published August 20, 2013 · Last modified July 2, 2015
This post will give you give you a quick glance of some useful AIX command that I usually keep handy for my own reference. I am not a regular AIX admin but at the same time I don’t want to be panic If I have to...
You might have already read my old post, 7 social engineering tips that new system admins should know in new team ,where I have discussed the social engineering points that helps you to quickly sync with the new team. And this post is the continuation post...
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