• RFE:
  • Allow the gc log to change the timezone
• Problem:
  • It seems unable to change the timezone of gc logs
    • gcLoggingEnabled can be used in KafkaClusterSpec, KafkaConnectSpec, KafkaMirrorMaker2Spec and ZookeeperClusterSpec.
  • ZK environment variable can be changed on the container as below, but the timezone of the gc logs can not be changed.

    •   kafka:
          jvmOptions:
            gcLoggingEnabled: true
          template:
            container:
              env:
              - name: TZ
                value: Asia/Tokyo
      

    • [2023-04-10T03:07:49.600+0000] GC(17) Concurrent Mark From Roots 30.657ms
      [2023-04-10T03:07:49.600+0000] GC(17) Concurrent Preclean
      [2023-04-10T03:07:49.600+0000] GC(17) Concurrent Preclean 0.073ms
      [2023-04-10T03:07:49.602+0000] GC(17) Pause Remark
      ...
      

• As far as investigated:
  • I ran a simple test of the solution in "ENTMQST-4721 Allow Kafka exporter to change the timezone", and it worked, so it seems the same solution can solve this problem.
  • The above problem is scheduled to be resolved in AMQ Streams 2.4, so this problem may have already been resolved as well.

– FYI, The container image of the Kafka exporter doesn't have the zone info (/usr/share/zoneinfo/) because of ubi8-minimal[1].

[1] Why is /usr/share/zoneinfo empty in ubi8-minimal images despite the tzdata package being present?
https://access.redhat.com/solutions/5616681