I have already read the k8s cluster-level-extended-resources and scheduler documents. https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/#cluster-level-extended-resources
From the documents, I knew that extender can get the pod specs at filter or bind phase, so that extender can allocate a managed source at that time. My question is how to inject the external resource into the pod. eg: how to add some environment variables(URL related to external resources) to pods.