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Most trusted JOB oriented professional program
DevOps Certified Professional (DCP)

Take your first step into the world of DevOps with this course, which will help you to learn about the methodologies and tools used to develop, deploy, and operate high-quality software.

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DevOps to DevSecOps – Learn the evolution
DevSecOps Certified Professional (DSOCP)

Learn to automate security into a fast-paced DevOps environment using various open-source tools and scripts.

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Get certified in the new tech skill to rule the industry
Site Reliability Engineering (SRE) Certified Professional

A method of measuring and achieving reliability through engineering and operations work – developed by Google to manage services.

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Master the art of DevOps
Master in DevOps Engineering (MDE)

Get enrolled for the most advanced and only course in the WORLD which can make you an expert and proficient Architect in DevOps, DevSecOps and Site Reliability Engineering (SRE) principles together.

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Gain expertise and certified yourself
Azure DevOps Solutions Expert

Learn about the DevOps services available on Azure and how you can use them to make your workflow more efficient.

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Learn and get certified
AWS Certified DevOps Professional

Learn about the DevOps services offered by AWS and how you can use them to make your workflow more efficient.

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Restore a default RHEL 7.x default repo list of EC2 Instance

Spread the Knowledge

Many time, my students have deleted or corrupted a yum repo list of RHEL7 or Centos 7 and i spent lots of time solving these problem. This, this is quick guide to solve a problems when /etc/yum.repos.d has been corrupted or deleted.

Options 1

$ cd /etc/yum.repos.d
$ git clone

Options 2

$ cd /etc/yum.repos.d

$ curl -o docker-ce.repo

$ curl -o epel-testing.repo

$ curl -o redhat-rhui.repo

$ curl -o epel.repo

$ curl -o redhat-rhui-client-config.repo

$ curl -o rhui-load-balancers.conf


  • This system is not registered with an entitlement server. You can use subscription-manager to register
  • /var/tmp/yum-root-02AK54/epel-release-latest-7.noarch.rpm: does not update installed package.
Rajesh Kumar