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[Doc] kerberos debug instructions #15779

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Jan 12, 2024
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[Doc] kerberos debug instructions #15779

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add kerberos debug instructions
kaisecheng Jan 10, 2024
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Update docs/static/troubleshoot/ts-kafka.asciidoc
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13 changes: 13 additions & 0 deletions docs/static/troubleshoot/ts-kafka.asciidoc
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Expand Up @@ -163,4 +163,17 @@ https://github.com/logstash-plugins/logstash-input-kafka/issues/210
* If (and only if) upgrading is not possible, set `consumer_threads` to `1`.


[discrete]
[[ts-kafka-kerberos-debug]]
===== Debug Kerberos SASL
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To troubleshoot authentication failure in Kafka client, add `-Dsun.security.krb5.debug=true` to `jvm.options` and the following lines to `log4j2.properties`
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```
logger.kafkainput.name = logstash.inputs.kafka
logger.kafkainput.level = debug
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logger.kafka.name = org.apache.kafka
logger.kafka.level = debug
```

NOTE: Kerberos debug log is not being output through log4j but is directed to the console.
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