Answer
PDB ensures minimum available replicas during voluntary disruptions.
Quick Answer
A Pod Disruption Budget (PDB) sets the minimum number of Pods that must stay running during voluntary disruptions (node drains, upgrades). It prevents operations like kubectl drain from taking down so many Pods that your service loses quorum or availability. Kubernetes refuses to evict Pods if it would violate the PDB.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ