Learn how to launch an Apache Kafka with the Apache Kafka Raft (KRaft) consensus protocol and SASL/PLAIN authentication

PLAIN versus PLAINTEXT: Do not confuse the SASL mechanism PLAIN with the no TLS/SSL encryption option, which is called PLAINTEXT. Configuration parameters such as sasl.enabled.mechanisms or sasl.mechanism.inter.broker.protocol may be configured to use the SASL mechanism PLAIN, whereas security.inter.broker.protocol or listeners may be configured to use the no TLS/SSL encryption option, SASL_PLAINTEXT.

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