Upgrading Your Cluster

One of the things I noticed while studying for my CKAD exam is that my test cluster was a bit behind. It’s been up and running for over 200 days at this point and I’m several versions behind. Version 1.17 is out, the exam was based on 1.16, and I’m running 1.13.

NAME                         STATUS   ROLES    AGE    VERSION
runlevl41c.mylabserver.com   Ready    master   207d   v1.13.5
runlevl42c.mylabserver.com   Ready    <none>   207d   v1.13.5
runlevl43c.mylabserver.com   Ready    <none>   207d   v1.13.5

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How I Passed the CKAD Exam

Last year, I decided that since I’d been working on pushing my employer to embrace a Cloud-native mentality that I should lead by example and get certified. We had chosen Kubernetes as our base container management platform and ultimately inked a deal with Red Hat to roll out OpenShift throughout the enterprise.

If you’ve read the blog for any time, you’ll remember that I was originally pursuing RHEL certification. At the time, even though I was in a development role, I was finding myself needing more and more Linux skills. However, my role transitioned to a dedicated focus on Cloud technologies. I abandoned RHEL and began focusing on Kubernetes. However, it wasn’t until about November of this year that I really buckled down to prepare.

In the spirit of openness, I’ll confess that I’ve had the benefit of spending the past several months working in a dedicated fashion deploying multiple OpenShift clusters. This has involved a great deal of tweaking, testing, and troubleshooting which has provided invaluable real-world, hands-on experience working with the Kubernetes system. Now, with that out of the way, I thought I’d share my personal take on how I prepared…and passed…the CKAD exam.

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