Scarab Diagnostic Field Test #034 - Prometheus Docker Swarm Label Source Boundary (opens in new tab)

Target: prometheus/prometheus Issue: prometheus/prometheus#12244 Pull request: prometheus/prometheus#18979 Field Lab record: Prometheus #12244 This field test was about documentation, but not "just documentation." The public issue reported confusion around Docker Swarm task discovery metadata in Prometheus. The user expected __meta_dockerswarm_container_label_ to expose labels from the running container or image, such as OCI image labels. The visible behavior was different. The met...