1. Why Kubernetes Bills Grow
Kubernetes simplifies deployment scale, but unoptimized resource requests can quickly inflate cloud bills. Over-provisioned CPU allocations mean paying for idle compute power. Realizing cost savings requires dynamic scaling configurations.
2. Configuring Karpenter
We replaced standard Cluster Autoscalers with Karpenter. Karpenter provisions optimal node sizes based on pending pod requests, minimizing empty capacity and resource waste.
3. Utilizing Spot Instances
For non-critical jobs and dev environments, we utilize spot instances. This reduces node costs by up to 70% while maintaining cluster stability using robust fallback rules.
4. Cost Monitoring
Deploying tools like Kubecost provides granular visibility into cost allocations by team and namespace. This data helps engineers make informed architecture decisions.
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Written by Neha Verma
VP EngineeringNeha oversees the systems delivery pipelines and SLA targets at Adytech.