define resource limits to avoid eviction

[pohly]

Pods without resource specification are the first that get evicted when a node runs out of resources. All of our deployments should specify required resources.

Perhaps there's also something else that can be done to prevent removal of a CSI driver instance from a node?

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[pohly]

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[misterikkit]

In addition to resource requests, we should recommend a pod priority

As mentioned on the mailing list. An important DaemonSet should also have a blanket toleration.

DaemonSets that are system-critical are recommended to include a blanket-toleration. Such a pod will never be evicted by a taint.

For example,
$ k get ds -n kube-system kube-proxy -oyaml
apiVersion: extensions/v1beta1
kind: DaemonSet
#snip
spec:
#snip
      tolerations:
      - effect: NoExecute
        operator: Exists
      - effect: NoSchedule
        operator: Exists

[msau42]

/help

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[cwdsuzhou]

if we deploy it under kube-system, we may use system-node-critical priority class directly.

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