Skip to content
Welcome To Charanjit Cheema Blog

Welcome To Charanjit Cheema Blog

An Open Source and Cloud Blog

Menu
  • Home
  • About Me!
  • Way to my Technical Blog
  • Contact me
  • Training Video
Menu

Author: Charanjit Cheema

Charanjit is working as a Linux Subject Matter Expert in Kyndryl, he has 16 Years of professional experience in IT Infrastructure Projects implementation and support service delivery. Rich work experience in Data Centers and MSCs (Mobile Switching Centers). He possesses good knowledge in Linux, VMware, AWS, and Openstack Cloud. He is a lazy System Administrator who likes to Automate his task through Shell scripts and Ansible playbooks. He has contributed his many Automations work in Kyndryl and also maintain his own internal company Github repo. His hobby is researching on new technologies and sharing this through his blog but if he is not researching or writing blog then you will find him listening music while sipping cup of coffee and enjoying the nature view. You can find him on Twitter, Facebook, Linkedin or send him an email at webmaster@cjcheema.com

How to recover “rpmdb open failed” error in RHEL or Centos Linux

Posted on August 30, 2018 by Charanjit Cheema

You are updating the system through yum command and suddenly power goes down or what happen if yum process is accidentally killed. Post this situation when you tried to update the system again with yum command now you are getting below error message related to rpmdb: error: rpmdb: BDB0113 Thread/process 2196/139984719730496 failed: BDB1507 Thread died…

 2,800 total views,  20 views today

Read more

Docker and Containers New Buzzwords.

Posted on June 7, 2018 by Charanjit Cheema

Docker is a container management service. The Docker keyword coined in DevOps for develop, ship and run anywhere why it is so because it enable the developers to easily develop the applications, ship the application into containers and later it can be deployed anywhere. The Docker was released in March 2013 but has become buzzword…

Read more

What is Cloud Object Storage?

Posted on May 25, 2018 by Charanjit Cheema

Cloud object storage stores unstructured data(like application images or media files) in the cloud.  Object storage is elastic, flexible and easily scalable into multiple petabytes which ideal for environment where data growth is unlimited hence it is considered a good fit for the cloud. Contrary to Block Storage which deal data as block and logical…

Read more

What is OpenFlow? How it works in SDN?

Posted on May 18, 2018 by Charanjit Cheema

OpenFlow is a standard protocol of SDN which assist SDN Controller to communicate directly with the forwarding plane of network devices such as switches and routers, both physical and virtual (hypervisor-based), so it can better adapt to changing business requirements. Generally the conventional switches forwards the packets which are called the Forwarding Plane and do…

 204 total views,  3 views today

Read more

What is SDN?

Posted on May 18, 2018 by Charanjit Cheema

SDN or Software-defined networking is a new technology which will soon replace the traditional Data Center networking architecture specially after introduction of Virtulization and Cloud. This term comprises of several kinds of network technologies which aimed at making the network as agile and flexible for virtualized server and storage infrastructure of the modern Data Center….

Read more

Tcpdump – Linux Admin 12 useful commands.

Posted on May 11, 2018 by Charanjit Cheema

Tcpdump is a network sniffer tool. It is most powerful and widely used command line tool for Linux/Unix. It sniff or capture the TCP/IP traffic that receive or transfer over a network. tcpdump has an option to save captured packets in a file for future analysis. It can be save in a pcap format file, that can be…

Read more

How to install and configure AWS CLI

Posted on April 27, 2018 by Charanjit Cheema

The AWS has launched AWS Command Line Interface (CLI) unified tool to manage your whole AWS services from the command line and automate them through scripts. You can install AWS CLI on your Linux or Windows machine for managing AWS services from command line. In this post I have demonstrated how to install and configure…

Read more

Setting different kernel version in Ubuntu 16.04.4 as default.

Posted on April 8, 2018 by Charanjit Cheema

In Ubuntu we can set different installed kernel version as default so that during next boot time Ubuntu can boot from that default kernel version as per requirement. There can be many reason for setting different installed kernel version as default example: Ubuntu is unable to boot with current installed or upgraded kernel version. After…

 458 total views,  5 views today

Read more

HPACU Utility Tips for Linux

Posted on April 6, 2018 by Charanjit Cheema

HPE has Provided very good utility called hpacu or (HP Array Configuration Utility) which is available in GUI and CLI for managing Local Hard disks of all HPE Servers and connected DAS (Direct Attached Storage) like HPE MDS 600. It can easily be downloadable from HPE Driver and Firmware Website or also can come in SPP…

 148 total views,  3 views today

Read more

Ubuntu throwing /boot full error on screen.

Posted on April 6, 2018 by Charanjit Cheema

I Love Ubuntu after Fedora it is my preferred OS who live in my personal Laptop.  Today I was trying to install Oracle Virtualbox in my Laptop during building initrd image I start getting boot partition full error on screen.   Also in apt-get  installation screen I got below error message due to no space…

 128 total views,  3 views today

Read more

Posts navigation

  • Previous
  • 1
  • 2
  • 3

Tags

AWS Cloud Computing Dockers Networking Open Networking OpenSource RHEL-CentOS SDN Server Hardware SLES tcpdump Ubuntu WSL

Follow me @

Subscribe to Blog via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 2 other subscribers

Recent Posts

  • How to manage the Apache logs with the help of Linux logrotation utility
  • SAPCONF5: Upgrading managing and addressing high swapping issue in SAP HANA server
  • RHEL 7 / CentOS 7 boot problem after P2V by using VMware converter
  • How to tune SLES 12 for SAP Application SP3 for optimizing SAP HANA system performance
  • How to upgrade Ubuntu 18.04 LTS to Ubuntu 20.04 LTS

Recent Comments

  1. toets on How to Set password policy in CentOS or RHEL system
  2. Kamal Kumar Sharma on How to recover or rebuild initramfs in CentOS 7 Linux
  3. Firoz Akhter on SAPCONF5: Upgrading managing and addressing high swapping issue in SAP HANA server
  4. Shameek Bhattacharya on How to Set password policy in CentOS or RHEL system
  5. Charanjit Cheema on How to recover “rpmdb open failed” error in RHEL or Centos Linux

Archives

  • September 2022
  • August 2022
  • July 2020
  • May 2020
  • February 2020
  • November 2019
  • June 2019
  • May 2019
  • March 2019
  • February 2019
  • December 2018
  • November 2018
  • October 2018
  • September 2018
  • August 2018
  • June 2018
  • May 2018
  • April 2018

Categories

  • Cloud Computing
  • Networking
  • OpenSource
  • RHEL-CentOS
  • Server Hardware
  • SLES
  • Technical Blog
  • Ubuntu
  • WSL

Blog Stats

  • 3,400 hits
Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.
To find out more, including how to control cookies, see here: Cookie Policy
  • Home
  • About Me!
  • Way to my Technical Blog
  • Contact me
  • Training Video
© 2023 Welcome To Charanjit Cheema Blog | Powered by Superbs Personal Blog theme
 

Loading Comments...