Kafka KRaft Metrics are Empty after Migration

[veerendra2]

Hi, I followed KRaft migration docs and migration is completed

$ k get pods | grep kafka
kafka-controller-3                           1/1     Running   0             25m
kafka-controller-4                           1/1     Running   0             23m
kafka-controller-5                           1/1     Running   0             24m
kafka-entity-operator-5fc5f95d66-plcmg       2/2     Running   0             27d
kafka-kafka-0                                1/1     Running   0             99m
kafka-kafka-1                                1/1     Running   0             99m
kafka-kafka-2                                1/1     Running   0             98m
kafka-kafka-exporter-85f7d595f9-rmnrt        1/1     Running   0             7m37s

$ k get kafka
NAME    DESIRED KAFKA REPLICAS   DESIRED ZK REPLICAS   READY   METADATA STATE   WARNINGS
kafka   3                        3                     True    KRaft            True

$ k get kafkanodepool
NAME         DESIRED REPLICAS   ROLES            NODEIDS
controller   3                  ["controller"]   [3,4,5]
kafka        3                  ["broker"]       [0,1,2]

And used the grafana dashbaord from here, after migration, I expect see some metrics in KRaft dashboard

The Kafka Dashboard is fine ✅

Is this expected? do I have wait for some time? Just wondering why issue before migrating on prod clusters

[ppatierno]

I guess it depends how you are configuring metrics in the ConfigMap used for that. We provide example here https://github.com/strimzi/strimzi-kafka-operator/blob/main/examples/metrics/kafka-metrics.yaml#L200 to expose KRaft related metrics and they should work with the above Grafana dashboard.

[veerendra2]

Thank you for pointing out, indeed the KRaft related metrics config was missing