”In a production Kafka cluster, an offline partition

may be impacting the producer clients, losing messages or causing back-pressure in the application.
This is most often a “site down” type of problem and will need to be addressed immediately.”

Excerpt from: Neha Narkhede, Gwen Shapira, and Todd Palino. ”Kafka: The Definitive Guide”.

We now export kafka_controller_kafkacontroller_value{name="OfflinePartitionsCount",} and friends.
See #140 for why.

prometheus/10-metrics-config.yml

@@ -9,8 +9,9 @@ data:
     lowercaseOutputName: true
     jmxUrl: service:jmx:rmi:///jndi/rmi://127.0.0.1:5555/jmxrmi
     ssl: false
-    whitelistObjectNames: ["kafka.server:*","java.lang:*"]
+    whitelistObjectNames: ["kafka.controller:*","kafka.server:*","java.lang:*"]
     rules:
+      - pattern : kafka.controller<type=KafkaController, name=(.+)><>(.*)
       - pattern : kafka.server<type=ReplicaFetcherManager, name=MaxLag, clientId=(.+)><>Value
       - pattern : kafka.server<type=BrokerTopicMetrics, name=(BytesInPerSec|BytesOutPerSec|MessagesInPerSec), topic=(.+)><>OneMinuteRate
       - pattern : kafka.server<type=KafkaRequestHandlerPool, name=RequestHandlerAvgIdlePercent><>OneMinuteRate