Node Over-Provisioning During Cluster Scaling

Nodes were over-provisioned, leading to unnecessary resource wastage during scaling.

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What Happened

Cluster Autoscaler added more nodes than necessary during scaling events, leading to resource wastage.

Diagnosis Steps

1Reviewed the scaling logic and determined that the Autoscaler was provisioning more nodes than required to handle the traffic load.
2Node usage data indicated that several nodes remained underutilized.

Root Cause

Over-provisioning by the Cluster Autoscaler due to overly conservative scaling settings.

Fix/Workaround

• Fine-tuned Cluster Autoscaler settings to scale nodes more precisely based on actual usage.
• Implemented tighter limits on node scaling thresholds.

Lessons Learned

Autoscaler settings must be precise to avoid over-provisioning and resource wastage.

How to Avoid

1Regularly monitor node usage and adjust scaling thresholds.
2Implement smarter autoscaling strategies that consider the actual resource demand.

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