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...
