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Five teams share our platform and two are regulated. Where do you draw the tenancy line: namespaces, separate clusters, or vclusters?

Tenancy is a dial from policy-based soft isolation to hard cluster boundaries with a virtual-control-plane middle ground. The scored answer picks by blast radius requirements and names what each model still leaves shared.

Updated Sep 2026 · Grounded in researched DevOps, SRE and platform engineering interview loops, written to a senior-engineer editorial bar, and never padded to hit a word count.

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Next in this trackEvery pod carries a credential to our API server. How does service account authentication actually work, and how would you lock it down?Next in this trackYour app runs database migrations in an init container on every deploy. Defend or attack that pattern.Next in this trackOff-peak, the autoscaler removes nodes and our Spark driver got evicted mid-run. How does scale-down choose its victims?

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