The Pod "nginx1" is invalid: spec.restartPolicy: Unsupported value: "IfNotPresent": supported values: "Always", "OnFailure", "Never"

这个错误提示是因为在Pod的spec中restartPolicy的值被设置为了不支持的值"IfNotPresent"。正确的值应该是"Always"、"OnFailure"或"Never"。你需要修改Pod的配置文件，将restartPolicy的值改为正确的值。例如，将restartPolicy设置为"Always"，可以这样修改配置文件：

apiVersion: v1
kind: Pod
metadata:
  name: nginx1
spec:
  restartPolicy: Always
  containers:
  - name: nginx
    image: nginx