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Fix static cluster nodepools for Karpenter #6709

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Merged
copybara-service merged 1 commit into from
May 28, 2026
Merged

Fix static cluster nodepools for Karpenter #6709

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6 changes: 5 additions & 1 deletion perfkitbenchmarker/providers/aws/elastic_kubernetes_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1037,6 +1037,9 @@ def _PostCreate(self):
f'settings.clusterName={self.name}',
'--set',
f'settings.interruptionQueue={self.name}',
# Not always needed but enable the feature.
'--set',
'settings.featureGates.staticCapacity=true',
'--set',
f'controller.resources.requests.cpu={controller_cpu}',
'--set',
Expand Down Expand Up @@ -1155,7 +1158,8 @@ def _CreateKarpenterNodePool(self, nodepool: container.BaseNodePoolConfig):
machine_requirements
)
if nodepool.min_nodes == nodepool.max_nodes:
# Not using autoscaling; set static replica count.
# Not using autoscaling; set static replica count & don't consolidate.
del yaml_nodepool[0]['spec']['disruption']
yaml_nodepool[0]['spec']['replicas'] = nodepool.num_nodes
else:
# NodePool CPU limit: max nodes * vCPU + 5%, max 1000.
Expand Down
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