What is the purpose of ResourceQuota and LimitRange in OpenShift, and how do they affect resource usage in a project?

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Multiple Choice

What is the purpose of ResourceQuota and LimitRange in OpenShift, and how do they affect resource usage in a project?

At the namespace level, you control how resources are used with two complementary mechanisms. ResourceQuota defines the total amount of resources that can be consumed in the project, such as the sum of CPU and memory across all pods, the number of pods, services, or persistent volume claims. It acts as a cap on aggregate usage so no single project can exhaust shared cluster resources. LimitRange works at the pod/container level within that same namespace. It sets minimum and maximum allowed resources for each container or pod (for example, min and max CPU/memory, and can provide default requests/limits if a workload doesn’t specify them). This ensures individual workloads stay within reasonable bounds and helps maintain scheduling predictability. So, ResourceQuota controls the overall budget for the namespace, while LimitRange enforces per-pod or per-container limits within that budget.

At the namespace level, you control how resources are used with two complementary mechanisms. ResourceQuota defines the total amount of resources that can be consumed in the project, such as the sum of CPU and memory across all pods, the number of pods, services, or persistent volume claims. It acts as a cap on aggregate usage so no single project can exhaust shared cluster resources.

LimitRange works at the pod/container level within that same namespace. It sets minimum and maximum allowed resources for each container or pod (for example, min and max CPU/memory, and can provide default requests/limits if a workload doesn’t specify them). This ensures individual workloads stay within reasonable bounds and helps maintain scheduling predictability.

So, ResourceQuota controls the overall budget for the namespace, while LimitRange enforces per-pod or per-container limits within that budget.

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