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DevOps with Kubernetes

You're reading from   DevOps with Kubernetes Accelerating software delivery with container orchestrators

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Product type Paperback
Published in Oct 2017
Publisher Packt
ISBN-13 9781788396646
Length 382 pages
Edition 1st Edition
Concepts
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Authors (3):
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Hui-Chuan Chloe Lee Hui-Chuan Chloe Lee
Author Profile Icon Hui-Chuan Chloe Lee
Hui-Chuan Chloe Lee
Hideto Saito Hideto Saito
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Hideto Saito
Cheng-Yang Wu Cheng-Yang Wu
Author Profile Icon Cheng-Yang Wu
Cheng-Yang Wu
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Toc

ResourceQuota

By default, pods in Kubernetes are resource-unbounded. Then the running pods might use up all the compute or storage resources in a cluster. ResourceQuota is a resource object that allows us to restrict the resource consumption that a namespace could use. By setting up the resource limit, we could reduce the noisy neighbor symptom. The team working for project1 won't use up all the resources in the physical cluster.

Then we can ensure the quality of service for other teams working in other projects which share the same physical cluster. There are three kinds of resource quotas supported in Kubernetes 1.7. Each kind includes different resource names, (https://kubernetes.io/docs/concepts/policy/resource-quotas):

  • Compute resource quota (CPU, memory)
  • Storage resource quota (requested storage, Persistent Volume Claims)
  • Object count quotas (pods, RCs, ConfigMaps...
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