Why Are Requests Passing the Dynamic Listener Not Collected?

[SpongeBobIsTheKingInTheNorth]

Title: Why Are Requests Passing the Dynamic Listener Not Collected?

Description:
I pushed Cluster and Listener to Envoy(Latest version 1.32) through istio and accessed backend services through Envoy many times. But I requested the /stats and /cluster interfaces and only got rq_xx=0

Here is the result from /clusters, the result of 'rq_total' and 'rq_total' is correct!

outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local::20.0.1.148:80::rq_success::495
outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local::20.0.1.148:80::rq_timeout::0
outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local::20.0.1.148:80::rq_total::495

Here is the result from /stats, it doesn't have any request data about my cluster like /clusters.

cluster.xds-grpc.upstream_rq_200: 0
cluster.xds-grpc.upstream_rq_2xx: 0
cluster.xds-grpc.upstream_rq_total: 0

Here is some configuration exported from envoy /config_dump?include_eds

[optional Relevant Links:]

{
 "configs": [
  {
   "@type": "type.googleapis.com/envoy.admin.v3.ClustersConfigDump",
   "dynamic_active_clusters": [
    {
     "cluster": {
      "@type": "type.googleapis.com/envoy.config.cluster.v3.Cluster",
      "name": "outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local",
      "type": "EDS",
      "eds_cluster_config": {
       "eds_config": {
        "ads": {},
        "initial_fetch_timeout": "0s",
        "resource_api_version": "V3"
       },
       "service_name": "outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local"
      },
      "connect_timeout": "10s",
      "lb_policy": "LEAST_REQUEST",
      "circuit_breakers": {
       "thresholds": [
        {
         "max_connections": 4294967295,
         "max_pending_requests": 4294967295,
         "max_requests": 4294967295,
         "max_retries": 4294967295,
         "track_remaining": true
        }
       ]
      },
      "upstream_bind_config": {
       "socket_options": [
        {
         "description": "ens-qwxnmb",
         "level": "1",
         "name": "25",
         "buf_value": "ZW5zLXF3eG5tYg=="
        }
       ]
      },
      "metadata": {
       "filter_metadata": {
        "istio": {
         "services": [
          {
           "namespace": "some-namespace",
           "name": "nginx-perf-8088",
           "host": "nginx-perf-8088.some-namespace.svc.cluster.local"
          }
         ],
         "default_original_port": 8088
        }
       }
      },
      "common_lb_config": {
       "locality_weighted_lb_config": {}
      },
      "filters": [
       {
        "name": "istio.metadata_exchange",
        "typed_config": {
         "@type": "type.googleapis.com/envoy.tcp.metadataexchange.config.MetadataExchange",
         "protocol": "istio-peer-exchange"
        }
       }
      ]
     }
    }
   ]
  },
  {
   "@type": "type.googleapis.com/envoy.admin.v3.EndpointsConfigDump",
   "dynamic_endpoint_configs": [
    {
     "endpoint_config": {
      "@type": "type.googleapis.com/envoy.config.endpoint.v3.ClusterLoadAssignment",
      "cluster_name": "outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local",
      "endpoints": [
       {
        "locality": {
         "region": "az0.dc0"
        },
        "lb_endpoints": [
         {
          "endpoint": {
           "address": {
            "socket_address": {
             "address": "20.0.1.80",
             "port_value": 80
            }
           },
           "health_check_config": {}
          },
          "health_status": "HEALTHY",
          "metadata": {
           "filter_metadata": {
            "istio": {
             "workload": "cce01-nginx-perf-test-db5d7c6cd-lhvrv;some-namespace;;;Kubernetes"
            }
           }
          },
          "load_balancing_weight": 1
         },
         {
          "endpoint": {
           "address": {
            "socket_address": {
             "address": "20.0.1.148",
             "port_value": 80
            }
           },
           "health_check_config": {}
          },
          "health_status": "HEALTHY",
          "metadata": {
           "filter_metadata": {
            "istio": {
             "workload": "cce01-nginx-perf-test-db5d7c6cd-m87sh;some-namespace;;;Kubernetes"
            }
           }
          },
          "load_balancing_weight": 1
         }
        ],
        "load_balancing_weight": 2
       }
      ],
      "policy": {
       "overprovisioning_factor": 140
      }
     }
    },
   ]
  },
  {
   "@type": "type.googleapis.com/envoy.admin.v3.ListenersConfigDump",
   "dynamic_listeners": [
    {
     "name": "30.0.7.3_11111_ens-qwxnmb",
     "active_state": {
      "listener": {
       "@type": "type.googleapis.com/envoy.config.listener.v3.Listener",
       "name": "30.0.7.3_11111_ens-qwxnmb",
       "address": {
        "socket_address": {
         "address": "30.0.7.3",
         "port_value": 11111
        }
       },
       "filter_chains": [
        {
         "filters": [
          {
           "name": "envoy.filters.network.tcp_proxy",
           "typed_config": {
            "@type": "type.googleapis.com/envoy.extensions.filters.network.tcp_proxy.v3.TcpProxy",
            "stat_prefix": "outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local",
            "cluster": "outbound|8088||nginx-perf-8088.some-namespace.svc.cluster.local"
           }
          }
         ]
        }
       ],
       "traffic_direction": "OUTBOUND",
       "stat_prefix": "ens-qwxnmb"
      }
     }
    }
   ]
  },
  {
   "@type": "type.googleapis.com/envoy.admin.v3.ScopedRoutesConfigDump"
  }
 ]
}

[mattklein123]

I think Istio disables a bunch of metrics by default but I'm not 100% sure. I would talk to them.

[SpongeBobIsTheKingInTheNorth]

As a supplement, I used Envoy's latest version 1.32.