What are the Kubernetes QoS classes?

Guaranteed: requests equal limits for all resources. Burstable: at least one request or limit set, but not equal. BestEffort: no requests or limits set. During node pressure, BestEffort pods are evicted first.

Should CPU limit equal CPU request?

Not necessarily. CPU is compressible, so setting higher limits allows bursting. However, for predictable performance, some prefer matching request and limit for Guaranteed QoS.

What happens when memory limit is exceeded?

Unlike CPU which gets throttled, exceeding memory limit triggers OOMKill (Out of Memory Kill). The container is terminated and potentially restarted based on restart policy.

How do I choose the right resource values?

Start by profiling your application under load. Set requests to the typical usage and limits to handle peak load. Use tools like kubectl top or Prometheus to monitor actual consumption.

Technology

Kubernetes Resource Calculator

Plan and optimize Kubernetes resource requests and limits. Calculate per-container, per-pod, and per-deployment totals with QoS class determination and YAML generation.

Container Configuration

Containers per Pod

Replicas

CPU Resources

CPU Request

CPU Unit

CPU Limit (optional)

Memory Resources

Memory Request

Memory Unit

Memory Limit (optional)

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Plan Your Kubernetes Resource Allocation

Accurately calculate CPU and memory resources for your Kubernetes deployments. This calculator helps you determine appropriate request and limit values for containers, pods, and entire deployments while ensuring optimal Quality of Service (QoS) class assignment.

Why Calculate Kubernetes Resources?

Prevent Resource Starvation

Set appropriate requests to ensure your pods get scheduled and receive guaranteed resources.

Avoid Throttling and OOMKills

Configure proper limits to prevent runaway containers from impacting other workloads.

Optimize Cluster Utilization

Right-size resources to maximize cluster efficiency without over-provisioning.

Ensure Proper QoS Class

Understand how your resource configuration affects pod priority during node pressure.

How to Use This Calculator

Frequently Asked Questions

Requests are guaranteed resources used for scheduling decisions. Limits are the maximum resources a container can use. A container can exceed its request (if available) but never its limit.