security.inter.broker.protocol=PLAINTEXT
sasl.mechanism.inter.broker.protocol=PLAIN
sasl.enabled.mechanisms=PLAIN
advertised.listeners=SASL_PLAINTEXT://example.com:9095,PLAINTEXT://example.com:9092
listeners = SASL_PLAINTEXT://0.0.0.0:9095,PLAINTEXT://0.0.0.0:9092

from kafka import KafkaProducer
producer = KafkaProducer(bootstrap_servers='example.com:9095', security_protocol="SASL_PLAINTEXT", sasl_mechanism='PLAIN', sasl_plain_username='username', sasl_plain_password='password')