The controller commit-latency panel selected controller pods with
pod=~"$strimzi_cluster_name-controller-.*", but the controller node pool
is named c-<hash> (kafka.controllerPoolName), so Strimzi names controller
pods <cluster>-c-<hash>-<id>. The literal -controller- never matched, so
the panel was permanently empty. Select the pool by its -c- token instead.
Signed-off-by: Andrey Kolkov <androndo@gmail.com>
The strimzi-kafka Grafana dashboard still had a 'ZK request latency' panel
(kafka_server_zookeeperclientmetrics_zookeeperrequestlatencyms), which goes
permanently empty after the ZooKeeper->KRaft migration. Replace it with a
KRaft controller commit-latency panel (kafka_server_raftmetrics_commit_latency_avg,
scraped from the controller pods). Metric names verified against a live KRaft
cluster. The PVC-exclusion filter that references zookeeper stays valid and is
left as is.
Signed-off-by: Alexey Artamonov <aleksei.artamonov@aenix.io>
Andrey Kolkov