Help with login using plain username and password

[vepsi]

Hi! I need some help with authorization which works with WaterDrop but not with Ruby-Kafka.

I have been given username, password and broker urls. With WaterDrop I can login and produce messages to topic when I have set username, password and these two parameters:
sasl.mechanism: PLAIN
security.protocol: sasl_ssl

I cannot find a way to define those (or similar) parameters in Ruby-Kafka and I'm getting "Connection error EOFError" during handshake. Sasl_scram_mechanism parameter in this library has possible values sha512 and sha256 and neither work for me. Sasl_over_ssl is set as false.

Am I trying to login to Kafka incorrectly, or could there be a way to get Ruby-Kafka to behave the same way as WaterDrop when sasl mechanism is plain?

Thanks!
-Veli-Pekka

[vepsi]

Problem solved.

I now have these parameters for constructor and login works:

kafka = Kafka.new(
    [brokers],
    sasl_plain_username: "x",
    sasl_plain_password: "y",
    sasl_over_ssl: true,
    ssl_ca_certs_from_system: true
)

I was missing parameter ssl_ca_certs_from_system and sasl_over_ssl was incorrectly set as false.

-Veli-Pekka