Kafka exporter logging level

[jesussancheztellomm]

Hi,

Is there a way to reduce the logging level of the Kafka Exporter? I am using Strimzi 0.24.1

I can see a KAFKA_EXPORTER_LOGGING env variable in the container, but i haven't find a way to set it to ERROR in the Kafka spec.

Thanks in advance,
All the best
Jesús

[scholzj]

You should be able to configure it in the .spec.kafkaExporter section: https://strimzi.io/docs/operators/latest/full/using.html#type-KafkaExporterSpec-reference

[jesussancheztellomm]

Thanks! Looks like there is some kind of bug because i have set it to error but still see info messages in the log.

Environment:
  KAFKA_EXPORTER_LOGGING:        error
  KAFKA_EXPORTER_KAFKA_VERSION:  2.7.0
  KAFKA_EXPORTER_GROUP_REGEX:    .*
  KAFKA_EXPORTER_TOPIC_REGEX:    .*
  KAFKA_EXPORTER_KAFKA_SERVER:   cadence-master-kafka-bootstrap:9091
  KAFKA_EXPORTER_ENABLE_SARAMA:  false

[kafka_exporter] [INFO] 2021/09/03 06:23:04 Starting kafka_exporter (version=, branch=, revision=)
[kafka_exporter] [INFO] 2021/09/03 06:23:04 Build context (go=go1.16.5, user=, date=)
[kafka_exporter] [INFO] 2021/09/03 06:23:04 Done Init Clients
[kafka_exporter] [INFO] 2021/09/03 06:23:04 Listening on :9404
[kafka_exporter] [INFO] 2021/09/03 06:23:20 Refreshing client metadata
[kafka_exporter] [INFO] 2021/09/03 06:23:20 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:22 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:28 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:30 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:38 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:40 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:42 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:48 Fetching consumer group metrics
[kafka_exporter] [INFO] 2021/09/03 06:23:50 Fetching consumer group metrics

[scholzj]

Hmm, maybe it is some bug ... I know we had some issues with logging in the fixed Kafka Exporter introduced in 0.24+ ... I will try to remember if we fixed this at the end or not.

[scholzj]

Looks like you are right. I opened #5529 for this.

[sknot-rh]

Just a clarification. Go logging works differently from Java. Error, Warn and Fatal log messages are printed regardless of the configured logging level. We can just configure verbosity of the info level. In #5575 I updated KafkaExporter to version, which supports this granularity. However, the supported log levels are just info, debug and trace.