#poddisruptionbudget

Articles tagged with "poddisruptionbudget"

Oct 19, 2026 #k3s #kubernetes #topology-spread-constraints #poddisruptionbudget #scheduling #node-drain

We Drained a Node and a Pod Never Came Back. Why Topology Spread Constraints and PodDisruptionBudget Collide on K3s

Draining a node in production K3s left a Pod stuck Pending. The cause: Topology Spread Constraints' maxSkew colliding with PodDisruptionBudget. We verify how draining itself creates a node shortage, based on official documentation.

Sep 18, 2026 #k3s #kubernetes #poddisruptionbudget #eviction #vertical-scaling #resource-optimization

A Resource Optimizer Broke K3s: All Replicas Evicted at Once. PodDisruptionBudget as the Last Line of Defense

A real incident where enabling automated resource optimization on K3s caused all replicas to be evicted simultaneously, triggering a full outage. This post explains why pods get evicted en masse and how PodDisruptionBudget's minAvailable setting prevents it.