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https://issues.apache.org/jira/browse/KAFKA-19988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18044859#comment-18044859
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Gergely Harmadás commented on KAFKA-19988:
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Hi [~chia7712], I have opened a new PR for kafka-site
[kafka-site#756|https://github.com/apache/kafka-site/pull/756]
> KRaft migration doc should account for ZK cluster id with a leading dash
> ------------------------------------------------------------------------
>
> Key: KAFKA-19988
> URL: https://issues.apache.org/jira/browse/KAFKA-19988
> Project: Kafka
> Issue Type: Bug
> Components: docs, documentation, kraft, migration
> Affects Versions: 3.9.1
> Reporter: Gergely Harmadás
> Assignee: Gergely Harmadás
> Priority: Minor
> Fix For: 3.9.2
>
>
> When preparing for the migration, there is a small chance that the retrieved
> cluster id from ZooKeeper contains a leading dash. Currently the 3.9
> documentation specifies the following during the step "Provisioning the KRaft
> controller quorum":
> {code:bash}
> # Save the previously retrieved cluster ID from ZooKeeper in a variable
> called zk-cluster-id
> $ bin/kafka-storage.sh format --standalone -t <zk-cluster-id> -c
> config/kraft/controller.properties{code}
> However the above command will fail with a less fortunate cluster id like
> -{{{}Yh6XyBIQ9CeAlMwJ8f7Hg{}}}, eg.:
> {noformat}
> bin/kafka-storage.sh format --standalone -t -Yh6XyBIQ9CeAlMwJ8f7Hg -c
> config/server.properties
> 25/12/12 09:24:54 INFO utils.Log4jControllerRegistration$: [main]:
> Registered `kafka:type=kafka.Log4jController` MBean
> usage: kafka-storage format [-h] --config CONFIG --cluster-id CLUSTER_ID
> [--add-scram ADD_SCRAM] [--ignore-formatted] [--release-version
> RELEASE_VERSION] [--feature FEATURE] [--standalone |
> --no-initial-controllers | --initial-controllers
> INITIAL_CONTROLLERS]
> kafka-storage: error: argument --cluster-id/-t: expected one argument
> {noformat}
> A similar problem came up with KRaft which was addressed in KAFKA-13741. In
> our case the cluster id is already specified, there is no way to change it. I
> was able to come up with a simple solution by using the full name of the
> argument like "--cluster-id=<zk-cluster-id>" instead of the shorthand "-t
> <zk-cluster-id>". Full example:
> {code:bash}
> bin/kafka-storage.sh format --cluster-id=-Yh6XyBIQ9CeAlMwJ8f7Hg -c
> config/kraft/controller.properties{code}
> I would propose to change the documentation based on my findings so we will
> be able to cover also ZooKeeper based cluster ids with a leading dash.
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