Health Metrics

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Overview

OpenTelemetry Collector health metrics dashboard

To collect health metrics from the OpenTelemetry Collector itself, configure the Prometheus receiver in your Datadog Exporter.

For more information, see the OpenTelemetry project documentation for the Prometheus receiver.

Setup

Add the following lines to your Collector configuration:

receivers:
  prometheus:
    config:
      scrape_configs:
      - job_name: 'otelcol'
        scrape_interval: 10s
        static_configs:
        - targets: ['0.0.0.0:8888']

Data collected

OpenTelemetry MetricDescription
otelcol_process_uptimeUptime of the process
otelcol_process_memory_rssTotal physical memory (resident set size)
otelcol_exporter_queue_sizeCurrent size of the retry queue (in batches)
otelcol_exporter_sent_spansNumber of spans successfully sent to destination
otelcol_exporter_send_failed_metric_pointsNumber of metric points in failed attempts to send to destination
otelcol_exporter_send_failed_spansNumber of spans in failed attempts to send to destination
otelcol_process_cpu_secondsTotal CPU user and system time in seconds
otelcol_receiver_refused_spansNumber of spans that could not be pushed into the pipeline
otelcol_exporter_queue_capacityFixed capacity of the retry queue (in batches)
otelcol_receiver_accepted_spansNumber of spans successfully pushed into the pipeline
otelcol_exporter_sent_metric_pointsNumber of metric points successfully sent to destination
otelcol_exporter_enqueue_failed_spansNumber of spans failed to be added to the sending queue
otelcol_scraper_errored_metric_pointsNumber of metric points that were unable to be scraped
otelcol_scraper_scraped_metric_pointsNumber of metric points successfully scraped
otelcol_receiver_refused_metric_pointsNumber of metric points that could not be pushed into the pipeline
otelcol_receiver_accepted_metric_pointsNumber of metric points successfully pushed into the pipeline
otelcol_process_runtime_heap_alloc_bytesBytes of allocated heap objects (see ‘go doc runtime.MemStats.HeapAlloc’)
otelcol_process_runtime_total_alloc_bytesCumulative bytes allocated for heap objects (see ‘go doc runtime.MemStats.TotalAlloc’)
otelcol_exporter_enqueue_failed_log_recordsNumber of log records failed to be added to the sending queue
otelcol_processor_batch_timeout_trigger_sendNumber of times the batch was sent due to a timeout trigger
otelcol_exporter_enqueue_failed_metric_pointsNumber of metric points failed to be added to the sending queue
otelcol_process_runtime_total_sys_memory_bytesTotal bytes of memory obtained from the OS (see the Go docs for runtime.MemStats.Sys)
otelcol_processor_batch_batch_size_trigger_sendNumber of times the batch was sent due to a size trigger
otelcol_exporter_sent_log_recordsNumber of log records successfully sent to destination
otelcol_receiver_refused_log_recordsNumber of log records that could not be pushed into the pipeline
otelcol_receiver_accepted_log_recordsNumber of log records successfully pushed into the pipeline

Full example configuration

For a full working example configuration with the Datadog exporter, see collector-metrics.yaml.

Example logging output

ResourceMetrics #0
Resource SchemaURL: https://opentelemetry.io/schemas/1.6.1
Resource attributes:
     -> service.name: Str(opentelemetry-collector)
     -> net.host.name: Str(192.168.55.78)
     -> service.instance.id: Str(192.168.55.78:8888)
     -> net.host.port: Str(8888)
     -> http.scheme: Str(http)
     -> k8s.pod.ip: Str(192.168.55.78)
     -> cloud.provider: Str(aws)
     -> cloud.platform: Str(aws_ec2)
     -> cloud.region: Str(us-east-1)
     -> cloud.account.id: Str(XXXXXXXXX)
     -> cloud.availability_zone: Str(us-east-1c)
     -> host.id: Str(i-0368add8e328c28f7)
     -> host.image.id: Str(ami-08a2e6a8e82737230)
     -> host.type: Str(m5.large)
     -> host.name: Str(ip-192-168-53-115.ec2.internal)
     -> os.type: Str(linux)
     -> k8s.pod.name: Str(opentelemetry-collector-agent-gqwm8)
     -> k8s.daemonset.name: Str(opentelemetry-collector-agent)
     -> k8s.daemonset.uid: Str(6d6fef61-d4c7-4226-9b7b-7d6b893cb31d)
     -> k8s.node.name: Str(ip-192-168-53-115.ec2.internal)
     -> kube_app_name: Str(opentelemetry-collector)
     -> kube_app_instance: Str(opentelemetry-collector)
     -> k8s.namespace.name: Str(otel-staging)
     -> k8s.pod.start_time: Str(2023-11-20T12:53:23Z)
     -> k8s.pod.uid: Str(988d1bdc-5baf-4e98-942f-ab026a371daf)
ScopeMetrics #0
ScopeMetrics SchemaURL: 
InstrumentationScope otelcol/prometheusreceiver 0.88.0-dev
Metric #0
Descriptor:
     -> Name: otelcol_otelsvc_k8s_namespace_added
     -> Description: Number of namespace add events received
     -> Unit: 
     -> DataType: Sum
     -> IsMonotonic: true
     -> AggregationTemporality: Cumulative
NumberDataPoints #0
Data point attributes:
     -> service_instance_id: Str(d80d11f9-aa84-4e16-818d-3e7d868c0cfe)
     -> service_name: Str(otelcontribcol)
     -> service_version: Str(0.88.0-dev)
StartTimestamp: 1970-01-01 00:00:00 +0000 UTC
Timestamp: 2023-11-20 13:17:36.881 +0000 UTC
Value: 194151496.000000
Metric #9
Descriptor:
     -> Name: otelcol_receiver_accepted_spans
     -> Description: Number of spans successfully pushed into the pipeline.
     -> Unit: 
     -> DataType: Sum
     -> IsMonotonic: true
     -> AggregationTemporality: Cumulative
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