KCNA · Question #87
Which of the following options is true about considerations for large Kubernetes clusters?
The correct answer is C. Kubernetes supports up to 5000 nodes and recommends no more than 110 pods per node. Kubernetes is designed to scale to large clusters, supporting up to 5000 nodes and recommending a maximum of 110 pods per node for optimal performance and stability.
Question
Which of the following options is true about considerations for large Kubernetes clusters?
Options
- AKubernetes supports up to 1000 nodes and recommends no more than 1000 containers per
- BKubernetes supports up to 5000 nodes and recommends no more than 500 pods per node.
- CKubernetes supports up to 5000 nodes and recommends no more than 110 pods per node.
- DKubernetes supports up to 50 nodes and recommends no more than 1000 containers per node.
How the community answered
(32 responses)- A3% (1)
- C91% (29)
- D6% (2)
Why each option
Kubernetes is designed to scale to large clusters, supporting up to 5000 nodes and recommending a maximum of 110 pods per node for optimal performance and stability.
Kubernetes supports more than 1000 nodes, and 1000 containers per node is an extremely high and generally unachievable/unrecommended density.
While Kubernetes supports 5000 nodes, the recommendation for pods per node is 110, not 500, due to networking and resource overheads.
Kubernetes officially supports clusters of up to 5000 nodes and sets a soft limit of 110 pods per node, as exceeding this number can impact network performance and resource management, based on scalability tests and best practices. These limits ensure the control plane remains responsive and worker nodes operate efficiently.
Kubernetes supports significantly more than 50 nodes for large-scale deployments, and 1000 containers per node is not a realistic or recommended limit.
Concept tested: Kubernetes cluster scalability limits and recommendations
Source: https://kubernetes.io/docs/setup/best-practices/cluster-large/
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