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https://issues.apache.org/jira/browse/KAFKA-8792?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905827#comment-16905827
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Sönke Liebau commented on KAFKA-8792:
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I agree, port 8080 tends to be one of the first ports software binds to for
some reason, so there is a reasonable chance that people wo test locally will
have something running on that port.
> Default ZK configuration to disable AdminServer
> -----------------------------------------------
>
> Key: KAFKA-8792
> URL: https://issues.apache.org/jira/browse/KAFKA-8792
> Project: Kafka
> Issue Type: Improvement
> Reporter: Gwen Shapira
> Priority: Major
>
> Kafka ships with default ZK configuration. With the upgrade to ZK 3.5, our
> defaults include running ZK's AdminServer on port 8080. This is an
> unfortunate default as it tends to cause conflicts.
> I suggest we default to disable ZK's AdminServer in the default ZK configs
> that we ship. Users who want to use AdminServer can enable it and set the
> port to something that works for them. Realistically, in most production
> environments, a different ZK server will be used anyway. So this is mostly to
> save new users who are trying Kafka on their own machine from running into
> accidental and frustrating port conflicts.
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