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

Category: OpenSource

Understanding of Linux Inodes

Posted on November 15, 2019 by Charanjit Cheema

Introduction to Inode File descriptors, file table and inode table in Linux. Image Source: Wikipedia An inode is a data structure on a filesystem on Linux and other Unix-likeoperating systems that stores all the information about a file except its name and its actual data. Inode is created during creation of file along with file…

 660 total views,  2 views today

Read more

How to recover or rebuild initramfs in CentOS 7 Linux

Posted on June 17, 2019 by Charanjit Cheema

Corruption of initramfs can be occur by many ways for example after patching CentOS 7 Linux OS or installing a buggy device driver in server you found CentOS 7 Linux server has become unbootable. You may also encouter below kernel panic error because server initramfs got damaged . CentOS 7 Linux Kernel Panic screen Now…

 7,039 total views,  5 views today

Read more

How to Set password policy in CentOS or RHEL system

Posted on May 27, 2019 by Charanjit Cheema

Linux is known for one of most secure Unix Operating System (OS) in world. But that is not mean it is 100% secure there is say in Information Technology (IT) no technology is a completely secure that is why from a System Administrator to CIO they take measure for securing IT infrastructure on regular basis…

 4,135 total views

Read more

What is Windows subsystem for Linux?

Posted on December 19, 2018 by Charanjit Cheema

Microsoft has added Windows Subsystem for Linux (WSL) from Microsoft Windows 10 version 1607 onward and Windows Server 2019 it has replaced the older Windows Services for Unix it is like WINE in Linux which provide compatible layer for running Windows based application on Linux likewise WSL provide a subsystem or layer on which different Linux distro…

 180 total views

Read more

Red Hat Enterprise Linux 8 Beta major features and improvement

Posted on December 10, 2018 by Charanjit Cheema

Red Hat has launched the beta version of Red Hat Enterprise Linux 8 (RHEL 8) for users and developers for testing purpose and getting feedback from them. Red Hat Inc. which is developing RHEL 8 has announced this operating system beta version for public use on November 14, 2018. Four year ago when Red Hat…

 234 total views

Read more

Segmentation Fault error in Linux / Unix system

Posted on December 6, 2018 by Charanjit Cheema

You were running a program installed in your Linux/Unix system and suddenly that program get stop and it log error in its logs memory segmentation fault error or you might executing a command in Linux / Unix server say you are working on LVM extension or VG scanning but you are unable to do so…

 610 total views,  1 views today

Read more

I have applied updates in my Ubuntu Linux machine how do I check what updates are applied?

Posted on October 1, 2018 by Charanjit Cheema

Whenever you apply an install/update/remove any package or packages Ubuntu log the changes happened to packages in its default file /var/log/dpkg.log. If you do listing to /var/log/ path (below is the command) you may find numbers of uncompressed and compressed dpkg.log files it depends on what type of log rotate policy is configure in file…

 212 total views

Read more

Simple way to configure Ngnix High Availability Web Server with Pacemaker and Corosync on CentOS7

Posted on September 4, 2018 by Charanjit Cheema

Pacemaker is an open source cluster manager software which provide high availability of resources or services in CentOS 7 or RHEL 7 Linux. It has feature of scalable and advanced HA Cluster Manager. This HA cluster manager distributed by ClusterLabs. Corosync is the core of Pacemaker Cluster Manager as it is responsible for generating heartbeat…

 381 total views

Read more

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…

 6,727 total views,  6 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

Posts navigation

  • Previous
  • 1
  • 2
  • 3
  • Next

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 migrate existing WordPress blog from AWS EC2 instance to Amazon Lightsail
  • What are Huge Pages and how to configure it in Linux for supporting Oracle SGA requirement
  • Enabling and Troubleshooting Hot Add Feature in Linux VMs
  • 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

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

  • May 2023
  • 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

  • 7,663 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...