Prometheus Receiver

Status
Stability	beta
Supported pipeline types	metrics
Distributions	core, contrib

Receives metric data in Prometheus format. See the Design for additional information on this receiver.

⚠️ Warning

Note: This component is currently work in progress. It has several limitations and please don't use it if the following limitations is a concern:

• Collector cannot auto-scale the scraping yet when multiple replicas of the collector is run.
• When running multiple replicas of the collector with the same config, it will scrape the targets multiple times.
• Users need to configure each replica with different scraping configuration if they want to manually shard the scraping.
• The Prometheus receiver is a stateful component.

Unsupported features

The Prometheus receiver is meant to minimally be a drop-in replacement for Prometheus. However, there are advanced features of Prometheus that we don't support and thus explicitly will return an error for if the receiver's configuration YAML/code contains any of the following

• alert_config.alertmanagers
• alert_config.relabel_configs
• remote_read
• remote_write
• rule_files

Getting Started

This receiver is a drop-in replacement for getting Prometheus to scrape your services. It supports the full set of Prometheus configuration in scrape_config, including service discovery. Just like you would write in a YAML configuration file before starting Prometheus, such as with:

Note: Since the collector configuration supports env variable substitution $ characters in your prometheus configuration are interpreted as environment variables. If you want to use $ characters in your prometheus configuration, you must escape them using $$.

prometheus --config.file=prom.yaml

You can copy and paste that same configuration under:

receivers:
  prometheus:
    config:

For example:

receivers:
    prometheus:
      config:
        scrape_configs:
          - job_name: 'otel-collector'
            scrape_interval: 5s
            static_configs:
              - targets: ['0.0.0.0:8888']
          - job_name: k8s
            kubernetes_sd_configs:
            - role: pod
            relabel_configs:
            - source_labels: [__meta_kubernetes_pod_annotation_prometheus_io_scrape]
              regex: "true"
              action: keep
            metric_relabel_configs:
            - source_labels: [__name__]
              regex: "(request_duration_seconds.*|response_duration_seconds.*)"
              action: keep

OpenTelemetry Operator

Additional to this static job definitions this receiver allows to query a list of jobs from the OpenTelemetryOperators TargetAllocator or a compatible endpoint.

receivers:
  prometheus:
    target_allocator:
      endpoint: http://my-targetallocator-service
      interval: 30s
      collector_id: collector-1