"api_config_source": {
                              "api_type": "GRPC",
                              "grpc_services": [
                                {
                                  "envoy_grpc": {
                                    "cluster_name": "sds-grpc"
                                  }
                                }
                              ],

                ],
                "loadBalancingWeight": 3
            }
        ],
        "policy": {
            "overprovisioningFactor": 140
        }
    },
    {
        "clusterName": "sds-grpc",
        "endpoints": [
            {
                "locality": {},
                "lbEndpoints": [
                    {
                        "endpoint": {
                            "address": {

      "state": "Unavailable: the identity is no longer needed",
      "certChain": []
    },
    {
      "identity": "spiffe://cluster.local/ns/istio-system/sa/istiod",
      "state": "Unavailable: signing gRPC error (The service is currently unavailable): error trying to connect: TLS handshake failed: cert verification failed - unable to get local issuer certificate [CERTIFICATE_VERIFY_FAILED]",
      "certChain": []
    }
  ]

          "intervalFactor": 1,
          "legendFormat": "{{ destination_workload }}.{{ destination_workload_namespace }}",
          "refId": "E"
        }
      ],
      "title": "HTTP/GRPC Workloads",
      "transformations": [
        {
          "id": "merge",
          "options": {
            "reducers": []
          }
        }
      ],
      "type": "table"
    },