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For develop purpose, I want to setup control center for my single broker kafka, but it was failed because of the exception. I put my configurations and control center output log details here. Could anyone help advise on it ? 

[2020-04-04 11:27:55,883] ERROR [main] 3 brokers are required but only found 1. Check the topic replication settings in the properties file or add more brokers to your cluster (io.confluent.controlcenter.KafkaHelper)
Robin Moffatt
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AlvinYueChao
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  • please, include in the post the relevant information from your setup and logs in order to be able to understand the question without having to visit external sites. – matus Apr 06 '20 at 11:32

2 Answers2

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You need to tell Confluent Control Center to use a single broker for its topics. By default it's configured to require three to prevent possible data loss

In your control-center-production.properties set:

confluent.controlcenter.internal.topics.replication=1
confluent.controlcenter.command.topic.replication=1
confluent.monitoring.interceptor.topic.replication=1
confluent.metrics.topic.replication=1
Robin Moffatt
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  • It's my bad, I forgot to uncomment the confluent.controlcenter.internal.topics.replication, thanks for your help, Robin. – AlvinYueChao Apr 04 '20 at 11:16
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    `control-center-production.properties` is the default file indeed. I would have thought it would be `control-center.properties`, but no. that's an awkward default setting to default to production. – Mehdi LAMRANI May 24 '20 at 11:33
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change the service configuration confluent-control-center.service file in "/lib/system/system"

ExecStart=/usr/bin/control-center-start /etc/confluent-control-center/control-center-minimal.properties
csgear
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