exporter config for oopentelemetry

[Samyu09]

HI team.
i need some clarity on things. i am writing down what i did so far, please read and let me know

Note - ns1 ns2 ns3 are namespaces in my cluster
so i am trying to set up prometheus as exporter for opentelemetry to get metrics. I have opentelemtry deployed in namespace called ns3
but i have ns1 and ns2 two different namespaces where prometheus is running. Now when i mention 0.0.0.0.9090
in exporter configuration which one among two proemtheus would be picked up by opentelemetry

 receivers:
    otlp:
      protocols:
        http:
          endpoint: 0.0.0.0:4318
    prometheus: # To scrape the Collector
      config:
        scrape_configs:
          - job_name: "otelcolyy"
            scrape_interval: 10s
            static_configs:
              - targets: ["0.0.0.0:8888"]
            metric_relabel_configs: # Labels to ignore
              - source_labels: [__name__]
                regex: ".*grpc_io.*"
                action: drop
 exporters:
    debug:
      verbosity: detailed
    prometheus:
      endpoint: 0.0.0.0:9090
      send_timestamps: true
      metric_expiration: 180m
      
  service:
    extensions: [health_check, zpages]
    telemetry:
      metrics:
        level: detailed
        address: 0.0.0.0:8888
    pipelines:
      traces:
        receivers: [otlp]
        exporters: [debug] 
      metrics:
        receivers: [otlp,prometheus]
        exporters: [prometheus]