Resource request
A resource request is a Kubernetes container setting that specifies the amount of compute or memory resource required for scheduling and resource accounting.
Kubernetes for Developers
A resource request is the amount of a particular compute resource that a Kubernetes container is expected to need for scheduling and resource accounting.
- How it is used
- Guides Kubernetes Pod scheduling and resource accounting while helping production workloads avoid placement without regard to their needs.
- How deep it goes
- Shows Deployment YAML syntax and a measurement procedure for sizing CPU and memory requests, then discusses bursting and eviction.
- Examples
- Uses a Deployment requesting `200m` CPU and `250Mi` memory, `kubectl top` observations, and low-traffic websites sharing CPU.
- What you can do after
- Operate/configure it by measuring Pod usage, setting CPU and memory requests, and revising them when evictions or performance reveal a mismatch.
Read how Kubernetes for Developers explains resource request →
Acing the Certified Kubernetes Administrator Exam, Second Edition
A CPU request is the amount of CPU capacity that a container requires for scheduling and resource-utilization calculations.
- How it is used
- Guides pod scheduling by declaring the CPU and memory capacity needed for placement and utilization calculations.
- How deep it goes
- Defines CPU and memory minimums, YAML placement, optional limits, automatic defaults, and HPA baseline behavior.
- Examples
- Uses nginx YAML, a 10m CPU request, kubectl apply, and kubectl output verification.
- What you can do after
- Operate/configure pods by editing resource requests, applying YAML with kubectl, and verifying scheduling-related configuration.
Related concepts
- resource limitcontrasts with · A resource limit is an enforced or configured maximum on the amount or rate of resource consumption or service activity within a specified scope.
- Kubernetes scheduleruses · The Kubernetes scheduler is a control-plane component that assigns unscheduled Pods to suitable nodes according to resource requirements and scheduling constraints.
- resource overcommitmentused by · Resource overcommitment is allocating or accepting resource demands whose aggregate exceeds available capacity, relying on demands not reaching their peaks simultaneously.
- schedulinguses · Scheduling is the planning and coordination of when and in what order activities or computational work occur, potentially assigning them to available resources subject to constraints.
- pod evictionused by · Pod eviction is the removal of a Pod from its node, typically to respond to resource pressure, maintenance, or other cluster-management conditions.
- Kubernetesused by · Kubernetes is an open-source platform for orchestrating and automating the deployment, scaling, and management of containerized workloads across computing clusters.
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