怎么表示一个pod 是 Critical Pod
规则1:
Enable Feature Gate ExperimentalCriticaPodAnnotation
必须隶属于kube-system namespace;
必须加上Annotation scheduler.alpha.kubernetes.io/critical-pod=""
规则2:
Enable Feature Gate ExperimentalCriticaPodAnnotation, PodPriority
Pod的Priority不为空,且不小于2 * 10^9;
> system-node-critical priority = 10^9 + 1000;
> system-cluster-critical priority = 10^9;
满足规则1或规则2之一,就认为该Pod为Critical Pod;
参考
https://yq.aliyun.com/articles/603541