Anatomy Of Containers

We all know how containers are adding value to developers by improving the ability to isolate from other applications, run application virtually anywhere from public cloud to on premise data centers. Most of us start creating docker containers right away and play with them but It is very important to understand what makes a container....

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Understanding Chroot

In a *nix based Os, root directory (/) is the top directory. Root file system sits on the disk partition where root directory is located and all other file system mount on this root file system. We all know that the there is root process with Pid 1 is the first thing that gets started when we start the Linux machine. All other process or jobs that start will be children of this process. Every Processes in linux can access...

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Linux - Rolling Back a Yum Update

One of the most important task of linux system admin is to update packages on the server using the yum command.  There can times where we apply some updates and it wont go well. During these time we need to rollback the things that we did. In this article we will see how we can rollback changes done using the yum command in linux 1. Let's start by installing a sample package like httpd using the “yum install -y httpd” 2....

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