Hi , I am trying to send prometheus CW metrics exp to otel collector, but getting error in collector, note that I am using Selfhosted Signoz Error:

{"level":"info","ts":"2025-07-23T11:28:04.770Z","caller":"healthcheck/handler.go:132","msg":"Health Check state change","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"otelcol.component.id":"health_check","otelcol.component.kind":"extension","status":"ready"}
{"level":"info","ts":"2025-07-23T11:28:04.770Z","caller":"service@v0.128.0/service.go:282","msg":"Everything is ready. Begin running and processing data.","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"}}
{"level":"warn","ts":"2025-07-23T11:28:04.770Z","caller":"grpc@v1.72.2/clientconn.go:1405","msg":"[core] [Channel #1 SubChannel #2]grpc: addrConn.createTransport failed to connect to {Addr: \"signoz-otel-collector:4317\", ServerName: \"signoz-otel-collector:4317\", BalancerAttributes: {\"<%!p(pickfirstleaf.managedByPickfirstKeyType={})>\": \"<%!p(bool=true)>\" }}. Err: connection error: desc = \"transport: Error while dialing: dial tcp 172.20.242.11:4317: connect: connection refused\"","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"grpc_log":true}
{"level":"info","timestamp":"2025-07-23T11:28:04.939Z","caller":"signozcol/collector.go:120","msg":"Collector service is running"}
{"level":"info","timestamp":"2025-07-23T11:28:04.939Z","caller":"service/service.go:73","msg":"Client started successfully"}
{"level":"info","timestamp":"2025-07-23T11:28:04.939Z","caller":"opamp/client.go:50","msg":"Ensuring collector is running","component":"opamp-server-client"}
{"level":"warn","ts":"2025-07-23T11:28:05.773Z","caller":"grpc@v1.72.2/clientconn.go:1405","msg":"[core] [Channel #1 SubChannel #2]grpc: addrConn.createTransport failed to connect to {Addr: \"signoz-otel-collector:4317\", ServerName: \"signoz-otel-collector:4317\", BalancerAttributes: {\"<%!p(pickfirstleaf.managedByPickfirstKeyType={})>\": \"<%!p(bool=true)>\" }}. Err: connection error: desc = \"transport: Error while dialing: dial tcp 172.20.242.11:4317: connect: connection refused\"","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"grpc_log":true}
{"level":"warn","ts":"2025-07-23T11:28:07.468Z","caller":"grpc@v1.72.2/clientconn.go:1405","msg":"[core] [Channel #1 SubChannel #2]grpc: addrConn.createTransport failed to connect to {Addr: \"signoz-otel-collector:4317\", ServerName: \"signoz-otel-collector:4317\", BalancerAttributes: {\"<%!p(pickfirstleaf.managedByPickfirstKeyType={})>\": \"<%!p(bool=true)>\" }}. Err: connection error: desc = \"transport: Error while dialing: dial tcp 172.20.242.11:4317: connect: connection refused\"","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"grpc_log":true}
{"level":"warn","ts":"2025-07-23T11:28:10.383Z","caller":"grpc@v1.72.2/clientconn.go:1405","msg":"[core] [Channel #1 SubChannel #2]grpc: addrConn.createTransport failed to connect to {Addr: \"signoz-otel-collector:4317\", ServerName: \"signoz-otel-collector:4317\", BalancerAttributes: {\"<%!p(pickfirstleaf.managedByPickfirstKeyType={})>\": \"<%!p(bool=true)>\" }}. Err: connection error: desc = \"transport: Error while dialing: dial tcp 172.20.242.11:4317: connect: connection refused\"","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"grpc_log":true}
{"level":"warn","ts":"2025-07-23T11:28:13.801Z","caller":"grpc@v1.72.2/clientconn.go:1405","msg":"[core] [Channel #1 SubChannel #2]grpc: addrConn.createTransport failed to connect to {Addr: \"signoz-otel-collector:4317\", ServerName: \"signoz-otel-collector:4317\", BalancerAttributes: {\"<%!p(pickfirstleaf.managedByPickfirstKeyType={})>\": \"<%!p(bool=true)>\" }}. Err: connection error: desc = \"transport: Error while dialing: dial tcp 172.20.242.11:4317: connect: connection refused\"","resource":{"service.instance.id":"f3f879cd-c4d2-44df-bc63-0684a4638537","service.name":"/signoz-otel-collector","service.version":"dev"},"grpc_log":true}

Config

otelCollector:
  name: "otel-collector"
  resources:
    requests:
      cpu: 100m
      memory: 200Mi
    limits:
      cpu: "2"
      memory: 3Gi

  config:
    receivers:
      otlp:
        protocols:
          grpc:
            endpoint: 0.0.0.0:4317
            max_recv_msg_size_mib: 16
          http:
            endpoint: 0.0.0.0:4318
      httpcheck:
        targets:
          %{~ for ep in endpoints ~}
          - endpoint: ${ep.endpoint}
            method: ${ep.method}
          %{~ endfor ~}
        collection_interval: 60s
      mysql:
        endpoint: <rds endpoint>
        username: appuser
        password: password
        <deleted>
            enabled: true
          mysql.replica.sql_delay:
            enabled: true
          mysql.replica.time_behind_source:
            enabled: true
      awscloudwatchmetrics:
        region: us-east-1
        poll_interval: 5m
        metrics:
          named:
            -         <deleted>

      # Collecting cloudwatch metrics
      prometheus:
        config:
          scrape_configs:
            - job_name: 'aws-cloudwatch-metrics'
              scrape_timeout: 120s
              scrape_interval: 300s
              static_configs:
                - targets: ['0.0.0.0:9106']
      jaeger:
        protocols:
          grpc:
            endpoint: 0.0.0.0:14250
          thrift_http:
            endpoint: 0.0.0.0:14268
      httplogreceiver/heroku:
        endpoint: 0.0.0.0:8081
        source: heroku
      httplogreceiver/json:
        endpoint: 0.0.0.0:8082
        source: json
    processors:
      batch:
        send_batch_size: 50000
        timeout: 1s
      # Memory Limiter processor. If not set, it will be overridden with values based on k8s resource limits.
      # ref: <https://github.com/open-telemetry/opentelemetry-collector/blob/main/processor/memorylimiterprocessor/README.md>
      # memory_limiter: null
      signozspanmetrics/delta:
        metrics_exporter: signozclickhousemetrics
        latency_histogram_buckets: [100us, 1ms, 2ms, 6ms, 10ms, 50ms, 100ms, 250ms, 500ms, 1000ms, 1400ms, 2000ms, 5s, 10s, 20s, 40s, 60s]
        dimensions_cache_size: 100000
        dimensions:
          - name: service.namespace
            default: default
          - name: deployment.environment
            default: default
          - name: signoz.collector.id
        aggregation_temporality: AGGREGATION_TEMPORALITY_DELTA
    extensions:
      health_check:
        endpoint: 0.0.0.0:13133
      zpages:
        endpoint: localhost:55679
      pprof:
        endpoint: localhost:1777
    exporters:
      c        <deleted>
        tenant_id: $${env:TENANT_ID}
        cache:
          provider: in_memory
      otlp/local:
        endpoint: "signoz-otel-collector:4317"
        tls:
          insecure: true
    service:
      telemetry:
        logs:
          encoding: json
      extensions: [health_check, zpages, pprof]
      pipelines:
        traces:
          receivers: [otlp, jaeger]
          processors: [signozspanmetrics/delta, batch]
          exporters: [clickhousetraces, metadataexporter]
        metrics:
          receivers: [otlp, httpcheck]
          processors: [batch]
          exporters: [metadataexporter, signozclickhousemetrics]
        logs:
          receivers: [otlp, httplogreceiver/heroku, httplogreceiver/json]
          processors: [batch]
          exporters: [clickhouselogsexporter, metadataexporter]
        metrics/mysql:
          receivers: [mysql, prometheus]
          processors: []
          exporters: [otlp/local]