Answer
User Pods consume resources needed by API server and controllers, destabilizing cluster.
Quick Answer
Control plane nodes run etcd, API server, and controller manager — resource-intensive processes with strict requirements. User workloads sharing these nodes can starve control plane components of CPU and memory, causing cluster instability. In managed clusters (EKS, GKE), control plane nodes are hidden; in self-managed, taint control plane nodes with NoSchedule.
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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