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https://issues.apache.org/jira/browse/KAFKA-12456?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kuan Po Tseng updated KAFKA-12456:
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Affects Version/s: 3.9.1
> Log "Listeners are not identical across brokers" message at WARN/INFO instead
> of ERROR
> --------------------------------------------------------------------------------------
>
> Key: KAFKA-12456
> URL: https://issues.apache.org/jira/browse/KAFKA-12456
> Project: Kafka
> Issue Type: Improvement
> Components: core, security
> Affects Versions: 2.6.1, 2.7.0, 2.8.0, 3.9.1
> Reporter: Michael Bingham
> Assignee: Kuan Po Tseng
> Priority: Minor
>
> Currently, when listeners are not identical across brokers, an {{ERROR}}
> level log message is generated like:
> {code:java}
> [2021-03-11 20:25:18,881] ERROR [MetadataCache brokerId=0] Listeners are not
> identical across brokers: LongMap(0 -> Map(ListenerName(PLAINTEXT) ->
> 192.168.111.99:9092 (id: 0 rack: null), ListenerName(SSL) ->
> 192.168.111.99:9094 (id: 0 rack: null), ListenerName(SASL_PLAINTEXT) ->
> 192.168.111.99:9093 (id: 0 rack: null)), 2 -> Map(ListenerName(PLAINTEXT) ->
> 192.168.116.148:9092 (id: 2 rack: null), ListenerName(SASL_PLAINTEXT) ->
> 192.168.116.148:9093 (id: 2 rack: null)), 1 -> Map(ListenerName(PLAINTEXT) ->
> 192.168.111.100:9092 (id: 1 rack: null), ListenerName(SASL_PLAINTEXT) ->
> 192.168.111.100:9093 (id: 1 rack: null))) (kafka.server.MetadataCache) {code}
> When adding security incrementally with a rolling update, this event is
> normal/expected, so recommend lowering the log level for this message to
> {{WARN}} or {{INFO}} to avoid confusion.
> This log message was originally added with
> https://issues.apache.org/jira/browse/KAFKA-6501 .
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