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My team and I were tasked with a global vSphere upgrade on all of our ESXi hosts, hyper-converged systems and our vCenter. We took enough time to get the inventory, check all the hosts for compatibility and test the various upgrade paths. The upgrade will be rolled out in multiple steps due to personal resources (we’re a small team and currently, it’s summer holiday season) and also to avoid too much downtime. In this blog post, I’d like to share some personal experiences regarding the upgrade of our vCenter. It didn’t work as we’ve planned. But in the end, all worked fine. I’d like also to shoutout a big thank you to my team. You guys rock!
Foreword
Before we dive deeply into the vCenter upgrade process, and what happened, I’d like to explain some steps first to better understand our approach and the upgrade process in general.
One of the milestones is (at the writing of this blog post already “was”) the upgrade of our vCenter. We’re using vCenter for our daily tasks like managing virtual workloads, deployment of new ESXi hosts, etc. But before we could upgrade our vCenter from 6.5 to 6.7, we had to do some
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