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I had issues with the cluster upgrade process and managed to complete it by upgrading containerd to the latest 1.6 release and regenerating the containerd config file, though this required that I use an external link [ Releases · containerd/containerd (github.com) ] which I think is not permitted to access during the exam since it isn't part of the exam-whitelisted-domains. I fear that I could end missing to score on the cluster upgrade question and end up losing points (especially that it's a heavy-weighted question).
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