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Beispiel-Dokumentation: Taints Affinity

Gezieltes Scheduling mit Node Labels, Node Affinity und Tolerations nachvollziehen.

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Beispiel-Dokumentation: Taints Affinity

Ziel

Gezieltes Scheduling mit Node Labels, Node Affinity und Tolerations nachvollziehen.

01 / 05

Was gemacht wird

Ein Pod verlangt einen Node mit workshop-role=isolated und toleriert zusätzlich den Taint workshop=isolated:NoSchedule.

02 / 05

Typische Kommandos

bash
kubectl label node <node-name> workshop-role=isolated
kubectl taint node <node-name> workshop=isolated:NoSchedule
kubectl apply -f manifests/
kubectl get pods -n scheduling-lab -o wide
03 / 05

Erfolg prüfen

  • Der Pod wird auf dem gelabelten Node geplant.
  • Ohne passendes Label bleibt der Pod Pending.
  • Die Toleration passt zum Taint.
04 / 05

Typische Fehler

  • Label und Affinity-Key stimmen nicht überein.
  • Taint wird nach dem Lab nicht entfernt.
  • requiredDuringSchedulingIgnoredDuringExecution wird mit bevorzugter Affinity verwechselt.
05 / 05

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