The OpenTelemetry Spring Boot starter gained declarative-configuration support starting in version 2.26.0 — the same YAML schema the Java agent introduced in late 2025 , now embedded inside application.yaml . This post traces what one env var, OTEL_SERVICE_NAME=petclinic , does in that new world, and where the seams are. In a hurry?
The Voyage of a Small Environment Variable
calendar_today
July 14, 2026
domain
opentelemetry