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OTEL-045: OTLP gRPC endpoint missing port number

Severity: warn (advisory)

Rule Details​

The otlp exporter's endpoint is a host:port string. Leaving the port off means the gRPC dialer either fails or silently connects to a default port you did not intend, and the failure mode is different depending on the Go version. Always list the port explicitly — 4317 for standard OTLP gRPC.

This rule fires when an otlp exporter has an endpoint that does not contain :.

Options​

This rule has no options.

Examples​

Avoid
exporters:
  otlp/backend:
    endpoint: backend.example.com        # no port
Prefer
exporters:
  otlp/backend:
    endpoint: backend.example.com:4317

When Not To Use It​

Never — always specify the port.

  • OTEL-044 — OTLP gRPC exporter endpoint has http(s):// scheme
  • OTEL-046 — OTLP HTTP endpoint missing URL scheme
  • OTEL-047 — OTLP HTTP exporter using gRPC port 4317

Version​

Available since augur v0.1.0.

Further Reading​

Resources​