May 2018
Intermediate to advanced
554 pages
13h 51m
English
Content preview from Kubernetes Cookbook - Second Edition
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Configuring a BestEffort pod
The BestEffort pod has the lowest priority in the Resource QoS classes. Therefore, in the case of a resource shortage, this BestEffort pod will be terminated by the Kubernetes scheduler, then will yield CPU and memory resources to other, higher priority pods.
In order to configure a pod as a BestEffort, you need to set the resource limit as 0 (explicit), or specify no resource limit (implicit).
- Prepare a pod configuration that explicitly sets the spec.containers.resources.limits as 0:
$ cat besteffort-explicit.ymlapiVersion: v1kind: Podmetadata: name: besteffortspec: containers: - name: nginx image: nginx resources: limits: cpu: 0 memory: 0
- Create the pod on both the chap8-qos and chap8-no-qos namespaces:
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