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https://issues.apache.org/jira/browse/KAFKA-17953?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Luke Chen resolved KAFKA-17953.
-------------------------------
Resolution: Not A Problem
Improving doc in this PR: https://github.com/apache/kafka/pull/17894
> Docker image fails when setting env vars
> ----------------------------------------
>
> Key: KAFKA-17953
> URL: https://issues.apache.org/jira/browse/KAFKA-17953
> Project: Kafka
> Issue Type: Bug
> Reporter: Federico Valeri
> Assignee: Federico Valeri
> Priority: Major
>
> When running the docker image with an env var, you get the following error:
> {code}
> $ docker run --rm -it -p 9092:9092 \
> -e KAFKA_NUM_NETWORK_THREADS=4 \
> apache/kafka:3.8.1
> ...
> Exception in thread "main" org.apache.kafka.common.config.ConfigException:
> Missing required configuration `zookeeper.connect` which has no default
> value. at kafka.server.KafkaConfig.validateValues(KafkaConfig.scala:1232) at
> kafka.server.KafkaConfig.<init>(KafkaConfig.scala:1223) at
> kafka.server.KafkaConfig.<init>(KafkaConfig.scala:545) at
> kafka.tools.StorageTool$.$anonfun$execute$1(StorageTool.scala:72) at
> scala.Option.flatMap(Option.scala:283) at
> kafka.tools.StorageTool$.execute(StorageTool.scala:72) at
> kafka.tools.StorageTool$.main(StorageTool.scala:53) at
> kafka.docker.KafkaDockerWrapper$.main(KafkaDockerWrapper.scala:48) at
> kafka.docker.KafkaDockerWrapper.main(KafkaDockerWrapper.scala)
> {code}
> The KafkaDockerWrapper does not copy the default KRaft config before
> appending the user env vars as an override.
> The result is that you end up with a server.properties that contains only the
> env vars.
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