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> bin/kafka-configs.sh --bootstrap-server localhost:9092 --entity-type brokers --entity-name 2  --describe --all

// non-sensitive field will not show "lastUpdatedTimestamp" field as before
advertised.listeners=PLAINTEXT://localhost:9092 sensitive=false synonyms={STATIC_BROKER_CONFIG:advertised.listeners=PLAINTEXT://localhost:9092}
...
// sensitive field will show "lastUpdatedTimestamp" field. If it is not changed before, it'll be -1.
listener.name.sslnochange.ssl.key.password=null sensitive=true synonyms={STATIC_BROKER_CONFIG:listener.name.plaintext.ssl.key.password=null, STATIC_BROKER_CONFIG:ssl.key.password=null} lastUpdatedTimestamp=-1
// If it is changed, it'll return the last updated timestamp
listener.name.ssl.ssl.key.password=null sensitive=true synonyms={STATIC_BROKER_CONFIG:listener.name.ssl.ssl.key.password=null, STATIC_BROKER_CONFIG:ssl.key.password=null} lastUpdatedTimestamp=1731651970963