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content/en/blog/_posts/2018-08-03-make-kubernetes-production-grade-anywhere.md

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Resource consumption by the control plane will correlate with the number of pods and the pod churn rate. Very large and very small clusters will benefit from non-default [settings](/docs/reference/command-line-tools-reference/kube-apiserver/) of kube-apiserver request throttling and memory. Having these too high can lead to request limit exceeded and out of memory errors.
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On worker nodes, [Node Allocatable](/docs/tasks/administer-cluster/reserve-compute-resources/) should be configured based on a reasonable supportable workload density at each node. Namespaces can be created to subdivide the worker node cluster into multiple virtual clusters with resource CPU and memory [quotas](/docs/tasks/administer-cluster/manage-resources/memory-default-namespace/). Kubelet handling of [out of resource](/docs/tasks/administer-cluster/out-of-resource/) conditions can be configured.
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On worker nodes, [Node Allocatable](/docs/tasks/administer-cluster/reserve-compute-resources/) should be configured based on a reasonable supportable workload density at each node. Namespaces can be created to subdivide the worker node cluster into multiple virtual clusters with resource CPU and memory [quotas](/docs/tasks/administer-cluster/manage-resources/memory-default-namespace/). Kubelet handling of [out of resource](/docs/concepts/scheduling-eviction/node-pressure-eviction/) conditions can be configured.
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## Security
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content/en/docs/concepts/scheduling-eviction/pod-priority-preemption.md

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to schedule the preemptor Pod, or if the lowest priority Pods are protected by
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`PodDisruptionBudget`.
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The kubelet uses Priority to determine pod order for [out-of-resource eviction](/docs/tasks/administer-cluster/out-of-resource/).
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The kubelet uses Priority to determine pod order for [node-pressure eviction](/docs/concepts/scheduling-eviction/node-pressure-eviction/).
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You can use the QoS class to estimate the order in which pods are most likely
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to get evicted. The kubelet ranks pods for eviction based on the following factors:
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1. Whether the starved resource usage exceeds requests
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1. Pod Priority
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1. Amount of resource usage relative to requests
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See [evicting end-user pods](/docs/tasks/administer-cluster/out-of-resource/#evicting-end-user-pods)
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See [Pod selection for kubelet eviction](/docs/concepts/scheduling-eviction/node-pressure-eviction/#pod-selection-for-kubelet-eviction)
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for more details.
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kubelet out-of-resource eviction does not evict Pods when their
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kubelet node-pressure eviction does not evict Pods when their
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usage does not exceed their requests. If a Pod with lower priority is not
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exceeding its requests, it won't be evicted. Another Pod with higher priority
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that exceeds its requests may be evicted.

content/en/docs/concepts/scheduling-eviction/taint-and-toleration.md

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## Taint Nodes by Condition
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The control plane, using the node {{<glossary_tooltip text="controller" term_id="controller">}},
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automatically creates taints with a `NoSchedule` effect for [node conditions](/docs/concepts/scheduling-eviction/node-pressure-eviction/).
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automatically creates taints with a `NoSchedule` effect for [node conditions](/docs/concepts/scheduling-eviction/node-pressure-eviction/#node-conditions).
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The scheduler checks taints, not node conditions, when it makes scheduling
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decisions. This ensures that node conditions don't directly affect scheduling.
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## {{% heading "whatsnext" %}}
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* Read about [out of resource handling](/docs/concepts/scheduling-eviction/out-of-resource/) and how you can configure it
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* Read about [pod priority](/docs/concepts/scheduling-eviction/pod-priority-preemption/)
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* Read about [Node-pressure Eviction](/docs/concepts/scheduling-eviction/node-pressure-eviction/) and how you can configure it
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* Read about [Pod Priority](/docs/concepts/scheduling-eviction/pod-priority-preemption/)
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content/en/docs/concepts/workloads/pods/disruptions.md

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- cloud provider or hypervisor failure makes VM disappear
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- a kernel panic
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- the node disappears from the cluster due to cluster network partition
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- eviction of a pod due to the node being [out-of-resources](/docs/tasks/administer-cluster/out-of-resource/).
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- eviction of a pod due to the node being [out-of-resources](/docs/concepts/scheduling-eviction/node-pressure-eviction/).
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Except for the out-of-resources condition, all these conditions
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should be familiar to most users; they are not specific

static/_redirects

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/docs/admin/node-conformance.md /docs/admin/node-conformance/ 301
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/docs/concepts/scheduling-eviction/out-of-resource/ /docs/concepts/scheduling-eviction/node-pressure-eviction/ 301
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/docs/concepts/scheduling-eviction/pod-eviction/ /docs/concepts/scheduling-eviction/#pod-disruption 301
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/docs/concepts/service-catalog/ /docs/concepts/extend-kubernetes/service-catalog/ 301
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/docs/concepts/services-networking/networkpolicies/ /docs/concepts/services-networking/network-policies/ 301
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/docs/tasks/administer-cluster/overview/ /docs/concepts/cluster-administration/ 301
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/docs/tasks/administer-cluster/quota-memory-cpu-namespace/ /docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace/ 301
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/docs/tasks/administer-cluster/reserve-compute-resources/out-of-resource.md /docs/tasks/administer-cluster/out-of-resource/ 301
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