Collector can expose Prometheus metrics locally on port 8888 and path
/metrics. For containerized environments it may be desirable to expose this
port on a public interface instead of just locally.
service:
telemetry:
metrics:
address: 127.0.0.1:8888
level: detailed
Collector can scrape own metric via own metric pipeline, so real configuration can looks like:
extensions:
sigv4auth/aws:
receivers:
prometheus:
config:
scrape_configs:
- job_name: otel-collector-metrics
scrape_interval: 10s
static_configs:
- targets: ['127.0.0.1:8888']
exporters:
prometheusremotewrite/aws:
endpoint: ${PROMETHEUS_ENDPOINT}
auth:
authenticator: sigv4auth/aws
retry_on_failure:
enabled: true
initial_interval: 1s
max_interval: 10s
max_elapsed_time: 30s
service:
pipelines:
metrics:
receivers: [prometheus]
processors: []
exporters: [awsprometheusremotewrite]
telemetry:
metrics:
address: 127.0.0.1:8888
level: detailed
Recommended Prometheus alerts for OpenTelemetry collector metrics:
groups:
- name: opentelemetry-collector
rules:
- alert: processor-dropped-spans
expr: sum(rate(otelcol_processor_dropped_spans{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some spans have been dropped by processor
description: Maybe collector has received non standard spans or it reached some limits
- alert: processor-dropped-metrics
expr: sum(rate(otelcol_processor_dropped_metric_points{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some metric points have been dropped by processor
description: Maybe collector has received non standard metric points or it reached some limits
- alert: receiver-refused-spans
expr: sum(rate(otelcol_receiver_refused_spans{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some spans have been refused by receiver
description: Maybe collector has received non standard spans or it reached some limits
- alert: receiver-refused-metrics
expr: sum(rate(otelcol_receiver_refused_metric_points{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some metric points have been refused by receiver
description: Maybe collector has received non standard metric points or it reached some limits
- alert: exporter-enqueued-spans
expr: sum(rate(otelcol_exporter_enqueue_failed_spans{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some spans have been enqueued by exporter
description: Maybe used destination has a problem or used payload is not correct
- alert: exporter-enqueued-metrics
expr: sum(rate(otelcol_exporter_enqueue_failed_metric_points{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some metric points have been enqueued by exporter
description: Maybe used destination has a problem or used payload is not correct
- alert: exporter-failed-requests
expr: sum(rate(otelcol_exporter_send_failed_requests{}[1m])) > 0
for: 5m
labels:
severity: critical
annotations:
summary: Some exporter requests failed
description: Maybe used destination has a problem or used payload is not correct
- alert: high-cpu-usage
expr: max(rate(otelcol_process_cpu_seconds{}[1m])*100) > 90
for: 5m
labels:
severity: critical
annotations:
summary: High max CPU usage
description: Collector need to scale up
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