By Launching of Red Hat OpenShift online in year 2011 Red Hat has revolutionize the Cloud platform as a service (PaaS) products since then. Red Hat OpenShift Online or RHOO gives platform to develop cloud-native application on PaaS to developers. It has hosted more than three million applications built by hundreds of thousands of individual…
Author: Charanjit Cheema
Charanjit is currently working as a Cloud Architect at Mphasis, with 17 years of experience in IT infrastructure projects, implementation, and support. While his main role is as a DevOps engineer, he holds a Cloud Architect position and has strong skills in cloud technologies and automation. His expertise includes Terraform, Ansible, AWS, Azure DevOps, Azure Cloud, VMware, and Linux systems.
Charanjit is passionate about automating tasks and improving processes. He uses tools like Terraform and Azure DevOps to build and manage cloud infrastructure and streamline deployment. He also enjoys using Shell scripts and Ansible playbooks to make systems run more efficiently.
In his free time, Charanjit enjoys learning about new technologies and sharing his knowledge through his blog. When he’s not working, he likes listening to music, having a cup of coffee, and relaxing in nature.
You can connect with Charanjit on Twitter, Facebook, LinkedIn, or email him at charanjit.cheema@cjcheema.com.
Terraform – A new way of provisioning and managing Datacenter Infrastructure.
Terraform has become hot topic now days. In few years this tool has gain its popularity worldwide, many have adopted it as it has proven good progress which made this tool one of an essential tool of DevOps tool chain. Have a look the Google trend you will get picture how much popularity it has…
I have applied updates in my Ubuntu Linux machine how do I check what updates are applied?
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…
Dawn of Infrastructure as a Code a new method of Datacenter infrastructure management and provisioning.
Earlier in Datacenter Infrastructure were manage and provision through traditional way of physical hardware configuration or interactive configuration tool but now Infrastructure as a code has changed the picture of managing and provisioning the Infrastructure. Infrastructure as a code or IaC is the process of managing and provisioning computer data centers through machine-readable definition files….
Simple way to configure Ngnix High Availability Web Server with Pacemaker and Corosync on CentOS7
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…
How to recover “rpmdb open failed” error in RHEL or Centos Linux
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…
Docker and Containers New Buzzwords.
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…
What is Cloud Object Storage?
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…
What is OpenFlow? How it works in SDN?
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…
What is SDN?
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….