Kafka Home
Metrics that show overall status for the Kafka cluster.
Row | Metrics | Description |
---|---|---|
BYTES IN & OUT / MESSAGES IN | Bytes In & Bytes Out /sec | Rate at which bytes are produced into the Kafka cluster and the rate at which bytes are being consumed from the Kafka cluster. |
Messages In /sec | Number of messages produced into the Kafka cluster. | |
CONTROLLER/LEADER COUNT & REPLICA MAXLAG | Active Controller Count | Number of active controllers in the Kafka cluster. This should always equal one. |
Replica MaxLag | Shows the lag of each replica from the leader. | |
Leader Count | Number of partitions for which a particular host is the leader. | |
UNDER REPLICATED PATRITIONS & OFFLINE PARTITONS COUNT | Under Replicated Partitions | Indicates if any partitions in the cluster are under-replicated. |
Offline Partitions Count | Indicates if any partitions are offline (which means that no leaders or replicas are available for producing or consuming). | |
PRODUCER & CONSUMER REQUESTS | Producer Req /sec | Rate at which producer requests are made to the Kafka cluster. |
Consumer Req /sec | Rate at which consumer requests are made from the Kafka cluster. | |
LEADER ELECTION AND UNCLEAN LEADER ELECTIONS | Leader Election Rate | Rate at which leader election is happening in the Kafka cluster. |
Unclean Leader Elections | Indicates if there are any unclean leader elections. Unclean leader election indicates that a replica which is not part of ISR is elected as a leader. | |
ISR SHRINKS / ISR EXPANDED | IsrShrinksPerSec | If the broker goes down, ISR shrinks. In such case, this metric indicates if any of the partitions are not part of ISR. |
IsrExpandsPerSec | Once the broker comes back up and catches up with the leader, this metric indicates if any partitions rejoined ISR. | |
REPLICA FETCHER MANAGER | ReplicaFetcherManager MaxLag | The maximum lag in messages between the follower and leader replicas. |