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Prior to joining Rearc, I worked as a cloud support engineer at AWS specializing in container services — specifically EKS. Of the many interesting cases I had to solve for customers during my time there, the ones that stand out are DNS resolution related issues. I am going to share the strategy I used to troubleshoot these issues and common root causes. VPC DNS Throttling issue Let’s say you have an EKS cluster with some workload running on it.