OTEL_EXPORTER_OTLP_ENDPOINT,
OTEL_EXPORTER_OTLP_INSECURE,
OTEL_EXPORTER_OTLP_HEADERS,
OTEL_EXPORTER_OTLP_TIMEOUT,
OTEL_EXPORTER_OTLP_CERTIFICATE...
Note that OpenTelemetry credentials, if configured, will be exposed as environment variables (likely in OTEL_EXPORTER_OTLP_HEADERS).