OpenTelemetry Collector Satelite with Dockerfile

Dockerfile

FROM alpine:latest

RUN apk --no-cache add curl

COPY ./otel-config.yaml /etc/otel/config.yaml

RUN curl -L https://github.com/open-telemetry/opentelemetry-collector-releases/releases/download/v0.66.0/otelcol-contrib_0.66.0_linux_amd64.tar.gz -o otelcol-contrib.tar.gz
RUN tar -xf otelcol-contrib.tar.gz otelcol-contrib

EXPOSE 4318
RUN ["chmod", "+x", "/otelcol-contrib"]
ENTRYPOINT ["/otelcol-contrib", "--config", "/etc/otel/config.yaml"]

otel-config.yaml

receivers:
  otlp:
    protocols:
      http:
  # The prometheus receiver scrapes metrics needed for the OpenTelemetry Collector Dashboard.
  prometheus:
    config:
      scrape_configs:
        - job_name: "otelcol"
          scrape_interval: 10s
          static_configs:
            - targets: ["0.0.0.0:8888"]

processors:
  batch:
    # Datadog APM Intake limit is 3.2MB. Let's make sure the batches do not
    # go over that.
    send_batch_max_size: 1000
    send_batch_size: 100
    timeout: 10s

exporters:
  logging:
    logLevel: debug
  datadog:
    api:
      site: datadoghq.com
      key: ${DATADOG_API_KEY}

service:
  pipelines:
    metrics:
      receivers: [otlp]
      processors: [batch]
      exporters: [datadog]
    traces:
      receivers: [otlp]
      processors: [batch]
      exporters: [logging, datadog]