{"source":"semconv","version":"1.44.0","attribute":{"id":"messaging.kafka.cluster.id","type":"string","stability":"development","brief":"The Kafka cluster ID, obtained from the broker metadata exposed through the Kafka client (or AdminClient) API.","note":"The cluster ID is a unique identifier reported by the Kafka broker. It identifies the cluster independently of the individual brokers the client is configured to connect to, and remains stable even if broker hostnames, IP addresses, or ports change.","examples":["MkU3OEVBNTcwNTJENDM2Qk"],"namespace":"messaging","definedIn":"model/messaging/registry.yaml","usedBy":[{"groupId":"span.messaging.kafka.process.consumer","groupType":"span","signalName":"messaging.process.consumer","requirementLevel":"recommended"},{"groupId":"span.messaging.kafka.receive.client","groupType":"span","signalName":"messaging.receive.client","requirementLevel":"recommended"},{"groupId":"span.messaging.kafka.send.client","groupType":"span","signalName":"messaging.send.client","requirementLevel":"recommended"},{"groupId":"span.messaging.kafka.send.producer","groupType":"span","signalName":"messaging.send.producer","requirementLevel":"recommended"},{"groupId":"span.messaging.kafka.settle.client","groupType":"span","signalName":"messaging.settle.client","requirementLevel":"recommended"}]},"history":[{"version":"1.44.0","publishedAt":"2026-08-04T20:00:58Z","kind":"first-seen","detail":"Added as development.","severity":"informational"}],"replaces":[]}