Answer
They restrict scheduling to nodes with specific labels.
Quick Answer
Node selectors constrain which nodes a Pod can run on by matching node labels. Add nodeSelector: disktype: ssd to a Pod and it only schedules on nodes labeled disktype=ssd. Simple and effective for basic placement, but only supports exact label matching — no AND/OR logic, no preference vs requirement.
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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