Add possibility to disable metrics coming from OTC (#994)

* Disable metrics port

* Disable creation of metrics instance in otc

* Disable metrics by default

* Move configuration to otelcol

* Update README.md

* Enable metrics by default

deploy/helm/sumologic/README.md

@@ -209,6 +209,7 @@ Parameter | Description | Default
 `otelcol.deployment.replicas` | Set the number of OpenTelemetry Collector replicas. | `1`
 `otelcol.deployment.resources.limits.memory` | Sets the OpenTelemetry Collector memory limit. | `2Gi`
 `otelcol.deployment.priorityClassName` | Priority class name for OpenTelemetry Collector log pods. | `Nil`
+`otelcol.metrics_enabled` | Enable or disable generation of the metrics from Collector. | `false`
 `otelcol.config.service.pipelines.traces.receivers` | Sets the list of enabled receivers. | `{jaeger, opencensus, otlp, zipkin}`
 `otelcol.config.exporters.zipkin.timeout` | Sets the Zipkin (default) exporter timeout. Append the unit, e.g. `s` when setting the parameter | `5s`
 `otelcol.config.exporters.logging.loglevel` | When tracing debug logging exporter is enabled, sets the verbosity level. Use either `info` or `debug`. | `info`

deploy/helm/sumologic/templates/otelcol-deployment.yaml

@@ -57,6 +57,9 @@ spec:
         command:
           - "/otelcontribcol"
           - "--config=/conf/traces.otelcol.conf.yaml"
+          {{- if eq .Values.otelcol.metrics_enabled false }}
+          - "--metrics-level=none"
+          {{- end }}
           - {{ printf "--mem-ballast-size-mib=%s" .Values.otelcol.deployment.memBallastSizeMib }}
         env:
         - name: GOGC

deploy/helm/sumologic/templates/otelcol-service.yaml

@@ -19,8 +19,10 @@ spec:
   - name: jaeger-thrift-binary # Default endpoint for Jaeger Thrift Binary receiver.
     port: 6832
     protocol: UDP
+  {{- if eq .Values.otelcol.metrics_enabled true }}
   - name: metrics # Default endpoint for querying metrics.
     port: 8888
+  {{- end }}
   - name: zipkin # Default endpoint for Zipkin receiver.
     port: 9411
   - name: jaeger-grpc  # Default endpoint for Jaeger gRPC

deploy/helm/sumologic/values.yaml

@@ -1589,6 +1589,9 @@ otelcol:
       pullPolicy: IfNotPresent
   # To enable collecting all logs, set to false
   logLevelFilter: true
+  # Metrics from Collector
+  metrics_enabled: true
+  # Collector configuration
   config:
     receivers:
       jaeger: