The idea should be to add a few configs for librdkafka to enable TLS encryption for data in transit to Kafka-Jumbo. These are the options used for kafkatee:
kafka.security.protocol=SSL kafka.ssl.ca.location=/etc/ssl/certs/Puppet_Internal_CA.pem kafka.ssl.cipher.suites=ECDHE-ECDSA-AES256-GCM-SHA384 kafka.ssl.curves.list=P-256 kafka.ssl.sigalgs.list=ECDSA+SHA256
Plus setting port 9093 for the brokers :)