PDB governs voluntary disruptions only and does not gate rolling updates at all. Candidates who say 'it keeps N pods alive' have just described the part it does not do.
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What does a PodDisruptionBudget actually protect against, and why did your zero-downtime deployment drop requests anyway?
PDB governs voluntary disruptions only and does not gate rolling updates at all. Candidates who say 'it keeps N pods alive' have just described the part it does not do.
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 trackDatabases will be provisioned by a Kubernetes Operator. What must the reconcile loop get right, and what when it cannot reach the API?Next in this trackYou need one log collector on every node, including nodes that join later. Which workload object do you reach for?Next in this trackEnvoy gets SIGTERM at the same instant as the app and requests drop mid-rollout. How does container ordering in a pod really work?
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