Set the log.retention.bytes in broker.yml

[AydinChavez]

Hi!

Simple question.

I am setting properties like following in the kafka.spec.config part within the strimzi broker.yaml:

    config:
      auto.create.topics.enable: "true"
      log.retention.hours: 168 #1 week
      log.segment.bytes: 524288000 #500 MB
      log.retention.bytes: 1073741824 #1GB

and apply it to k8s.

But when I do exec into one of my kafka broker pod I see that the value in the server.properties file is still commented out (/opt/kafka/server.properties):

sh-4.4$ grep log.retention.bytes server.properties 
# segments drop below log.retention.bytes. Functions independently of log.retention.hours.
#log.retention.bytes=1073741824

Am I missing something here?

[scholzj]

First of all, the /opt/kafka/server.properties files is not used for anything. The used properties file is in /tmp. Also, the properties file shows the settings which were used when the broker started. But many Kafka options can be dynamically configured. In whihc case the broker will change them through the Kafka APIs and they will be used but not visible in the properties file until the next broker restart. This is to avoid unnecessary restarts.

[AydinChavez]

Thank you Jakub. This helps.
Great work btw.