21、Kubernetes资源管理与伸缩：全面指南

Kubernetes资源管理与伸缩：全面指南

1. 资源抢占与弹性伸缩

在Kubernetes环境中，当添加高优先级的Pod时，低优先级的Pod可能会被终止。例如，执行以下命令查看Pod状态：

$ kubectl get pod -o wide
NAME               READY STATUS RESTARTS AGE   IP      NODE NOMINATED NODE
highpods-77dd55b549-g2m6t  0/1 Pending 0  3s <none> <none> minikube
highpods-77dd55b549-sdpbv  1/1 Running 0 20s 172.17.0.9 minikube <none>
lowpods-65ff8966fc-rsx7j   0/1 Pending 0  3s <none> <none> <none>
lowpods-65ff8966fc-xnv4v   1/1 Terminating 0 37s 172.17.0.7 minikube <none>
lowpods-65ff8966fc-xswjp   1/1 Running 0 37s 172.17.0.8 minikube <none>

通过 kubectl describe 命令可以看到，低优先级Pod lowpods-65ff8966fc-xnv4v 被高优先级Pod highpods