Container-Optimized OS に OpenTelemetry Collector をデプロイする

write_files:
- path: /etc/config/config.yaml
  permissions: 0644
  owner: root
  content: |
    receivers:
      # Open two OTLP servers:
      # - On port 4317, open an OTLP GRPC server
      # - On port 4318, open an OTLP HTTP server
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
      otlp:
        protocols:
          grpc:
            endpoint: localhost:4317
          http:
            cors:
              # This effectively allows any origin
              # to make requests to the HTTP server.
              allowed_origins:
              - http://*
              - https://*
            endpoint: localhost:4318

    processors:
      # The batch processor is in place to regulate both the number of requests
      # being made and the size of those requests.
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector/tree/main/processor/batchprocessor
      batch:
        send_batch_max_size: 200
        send_batch_size: 200
        timeout: 5s

      # The memorylimiter will check the memory usage of the collector process.
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector/tree/main/processor/memorylimiterprocessor
      memory_limiter:
        check_interval: 1s
        limit_percentage: 65
        spike_limit_percentage: 20

      # The resourcedetection processor is configured to detect GCP resources.
      # Resource attributes that represent the GCP resource the collector is
      # running on will be attached to all telemetry that goes through this
      # processor.
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/resourcedetectionprocessor
      # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/resourcedetectionprocessor#gcp-metadata
      resourcedetection:
        detectors: [gcp]
        timeout: 10s

      transform/collision:
        metric_statements:
        - context: datapoint
          statements:
          - set(attributes["exported_location"], attributes["location"])
          - delete_key(attributes, "location")
          - set(attributes["exported_cluster"], attributes["cluster"])
          - delete_key(attributes, "cluster")
          - set(attributes["exported_namespace"], attributes["namespace"])
          - delete_key(attributes, "namespace")
          - set(attributes["exported_job"], attributes["job"])
          - delete_key(attributes, "job")
          - set(attributes["exported_instance"], attributes["instance"])
          - delete_key(attributes, "instance")
          - set(attributes["exported_project_id"], attributes["project_id"])
          - delete_key(attributes, "project_id")

    exporters:
      # The googlecloud exporter will export telemetry to different
      # Google Cloud services:
      # Logs -> Cloud Logging
      # Metrics -> Cloud Monitoring
      # Traces -> Cloud Trace
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/googlecloudexporter
      googlecloud:
        log:
          default_log_name: opentelemetry-collector

      # The googlemanagedprometheus exporter will send metrics to
      # Google Managed Service for Prometheus.
      #
      # Docs:
      # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/googlemanagedprometheusexporter
      googlemanagedprometheus:

    service:
      pipelines:
        logs:
          receivers:
          - otlp
          processors:
          - resourcedetection
          - memory_limiter
          - batch
          exporters:
          - googlecloud
        metrics/otlp:
          receivers:
          - otlp
          processors:
          - resourcedetection
          - transform/collision
          - memory_limiter
          - batch
          exporters:
          - googlemanagedprometheus
        traces:
          receivers:
          - otlp
          processors:
          - resourcedetection
          - memory_limiter
          - batch
          exporters:
          - googlecloud
      # Internal telemetry for the collector supports both push and pull-based telemetry data transmission.
      # Leveraging the pre-configured OTLP receiver eliminates the need for an additional port.
      #
      # Docs:
      # https://opentelemetry.io/docs/collector/internal-telemetry/
      telemetry:
        metrics:
          readers:
            - periodic:
                exporter:
                  otlp:
                    protocol: grpc
                    endpoint: localhost:4317

docker run -d \
    --network otel \
    --name opentelemetry-collector \
    -v /etc/config:/etc/config \
    us-docker.pkg.dev/cloud-ops-agents-artifacts/google-cloud-opentelemetry-collector/otelcol-google:0.129.0 \
    --config=/etc/config/config.yaml

receivers:
  # Open two OTLP servers:
  # - On port 4317, open an OTLP GRPC server
  # - On port 4318, open an OTLP HTTP server
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector/tree/main/receiver/otlpreceiver
  otlp:
    protocols:
      grpc:
        endpoint: localhost:4317
      http:
        cors:
          # This effectively allows any origin
          # to make requests to the HTTP server.
          allowed_origins:
          - http://*
          - https://*
        endpoint: localhost:4318

processors:
  # The batch processor is in place to regulate both the number of requests
  # being made and the size of those requests.
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector/tree/main/processor/batchprocessor
  batch:
    send_batch_max_size: 200
    send_batch_size: 200
    timeout: 5s

  # The memorylimiter will check the memory usage of the collector process.
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector/tree/main/processor/memorylimiterprocessor
  memory_limiter:
    check_interval: 1s
    limit_percentage: 65
    spike_limit_percentage: 20

  # The resourcedetection processor is configured to detect GCP resources.
  # Resource attributes that represent the GCP resource the collector is
  # running on will be attached to all telemetry that goes through this
  # processor.
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/resourcedetectionprocessor
  # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/processor/resourcedetectionprocessor#gcp-metadata
  resourcedetection:
    detectors: [gcp]
    timeout: 10s

  transform/collision:
    metric_statements:
    - context: datapoint
      statements:
      - set(attributes["exported_location"], attributes["location"])
      - delete_key(attributes, "location")
      - set(attributes["exported_cluster"], attributes["cluster"])
      - delete_key(attributes, "cluster")
      - set(attributes["exported_namespace"], attributes["namespace"])
      - delete_key(attributes, "namespace")
      - set(attributes["exported_job"], attributes["job"])
      - delete_key(attributes, "job")
      - set(attributes["exported_instance"], attributes["instance"])
      - delete_key(attributes, "instance")
      - set(attributes["exported_project_id"], attributes["project_id"])
      - delete_key(attributes, "project_id")

exporters:
  # The googlecloud exporter will export telemetry to different
  # Google Cloud services:
  # Logs -> Cloud Logging
  # Metrics -> Cloud Monitoring
  # Traces -> Cloud Trace
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/googlecloudexporter
  googlecloud:
    log:
      default_log_name: opentelemetry-collector

  # The googlemanagedprometheus exporter will send metrics to
  # Google Managed Service for Prometheus.
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/exporter/googlemanagedprometheusexporter
  googlemanagedprometheus:

extensions:
  # Opens an endpoint on 13133 that can be used to check the
  # status of the collector. Since this does not configure the
  # `path` config value, the endpoint will default to `/`.
  #
  # When running on Cloud Run, this extension is required and not optional.
  # In other environments it is recommended but may not be required for operation
  # (i.e. in Container-Optimized OS or other GCE environments).
  #
  # Docs:
  # https://github.com/open-telemetry/opentelemetry-collector-contrib/tree/main/extension/healthcheckextension
  health_check:
    endpoint: 0.0.0.0:13133

service:
  extensions:
  - health_check
  pipelines:
    logs:
      receivers:
      - otlp
      processors:
      - resourcedetection
      - memory_limiter
      - batch
      exporters:
      - googlecloud
    metrics/otlp:
      receivers:
      - otlp
      processors:
      - resourcedetection
      - transform/collision
      - memory_limiter
      - batch
      exporters:
      - googlemanagedprometheus
    traces:
      receivers:
      - otlp
      processors:
      - resourcedetection
      - memory_limiter
      - batch
      exporters:
      - googlecloud
  # Internal telemetry for the collector supports both push and pull-based telemetry data transmission.
  # Leveraging the pre-configured OTLP receiver eliminates the need for an additional port.
  #
  # Docs:
  # https://opentelemetry.io/docs/collector/internal-telemetry/
  telemetry:
    metrics:
      readers:
        - periodic:
            exporter:
              otlp:
                protocol: grpc
                endpoint: localhost:4317