Install Jenkins in offline mode on CentOS / RHEL

There are times when you would need to do an offline installation of the Jenkins. This may be to meet certain requirements of the workplace that you are operating in. I came across this issue some time back and internet is woefully out of articles for proper steps on this one. In this blog post, we’ll learn how to do an offline installation of Jenkins.

Install OpenJDK Java

First, we need to check what version of java is installed on the machine using:
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Create a kubernetes cluster on CentOS

What is Kubernetes?

Kubernetes, or k8s or “kube”, if you’re into brevity, is an open source platform that automates Linux container operations. It eliminates many of the manual processes involved in deploying and scaling containerized applications. In other words, you can cluster together groups of hosts running Linux containers, and Kubernetes helps you easily and efficiently manage those clusters. These clusters can span hosts across public, private, or hybrid clouds.

Kubernetes was originally developed and designed by engineers at Google. Google was one of the early contributors to Linux container technology and has talked publicly about how everything at Google runs in containers. (This is the technology behind Google’s cloud services.)
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Install PowerShell Core on Ubuntu / CentOS using package management

Microsoft has release latest bits of PowerShell core and published PowerShell Core 6.0 alpha.15 to https://packages.microsoft.com. So we can use package management tools like yum or apt-get to install the latest PowerShell version on Linux distributions. It’s as simple as registering the Microsoft repository once as superuser and then just need to use either sudo apt-get install powershell or sudo yum update powershell (depending on which distribution you are using) to update it …Continue Reading