KedaOperator和KedaOperatorMetricsAPIServerPOD上的镜像无法拉取。

1. 检查Kubernetes集群中是否有网络故障或Docker Registry是否正常运行。
2. 确认Keda Operator和Keda Operator Metrics APIServer POD使用正确的镜像地址，例如：docker.io/kedacore/keda:xxx。
3. 针对私有Registry，确认Kubernetes集群已经正确授权以从Registry中拉取镜像，例如：创建secret对象并将其添加到对应的Deployment或StatefulSet中。
4. 可以考虑重新部署Keda Operator和Keda Operator Metrics APIServer POD，以确保使用的镜像被正确地下载和部署。

示例：

1. 确认POD中的镜像地址

apiVersion: v1
kind: Pod
metadata:
  labels:
    app: keda-operator
  name: keda-operator
spec:
  containers:
  - name: keda-operator
    image: docker.io/kedacore/keda:latest

2. 针对私有Registry，创建secret对象并将其添加到对应的Deployment或StatefulSet中

apiVersion: v1
kind: Secret
metadata:
  name: regcred
  namespace: default
data:
  .dockerconfigjson: <base64-encoded-json-data>
type: kubernetes.io/dockerconfigjson

apiVersion: apps/v1
kind: Deployment
metadata:
  name: keda-operator
spec:
  template:
    spec:
      imagePullSecrets:
        - name: regcred
      containers:
        - name: keda-operator
          image: myprivateregistry.com/kedacore/keda:latest

3. 重新部署Keda Operator和Keda Operator Metrics APIServer POD

kubectl delete deployment keda-operator
kubectl apply -f keda-operator.yaml