libvirt_cpu_stats_cpu_time_nanosecs{app="prometheus-lex",domain="virtlet-c91822c8-5e82-beta-deflect",instance="192.168.2.32:9177",job="kubernetes-pods",kubernetes_namespace="default",kubernetes_pod_name="prometheus-lex-866694b884-9z8v6",name="prometheus-lex",pod_template_hash="866694b884"}

- seriesQuery: 'libvirt_cpu_stats_cpu_time_nanosecs{job="kubernetes-pods", app="prometheus-lex"}'
      seriesFilters: []
      resource:
        overrides:
          kubernetes_pod_name:
            resource: pod
          kubernetes_namespace:
            resource: namespace
      name:
        matches: libvirt_cpu_stats_cpu_time_nanosecs
        as: libvirt_cpu_stats_cpu_time_rate
      metricsQuery: rate(libvirt_cpu_stats_cpu_time_nanosecs{job="kubernetes-pods", app="prometheus-lex", <<.LabelMatchers>>}[5m])

kubectl get --raw /apis/custom.metrics.k8s.io/v1beta1|grep libvirt

returns nothing