I am using Kafka (version 2.3.0) and Zookeeper (version 3.5.5-3) - the stable version is 3.6.3.
When I test the SSL of my Zookeeper using this command:
openssl s_client -showcerts -connect 127.0.0.1:2280 -CAfile /certs/ca-chain.cert.pem
and I am getting this error:
140371409225024:error:14094412:SSL routines:ssl3_read_bytes:sslv3 alert bad certificate:../ssl/record/rec_layer_s3.c:1543:SSL alert number 42
But if I will install Zookeeper version 3.5.7 and up and I can add this in my zoo.cnf or zookeeper.properties:
ssl.clientAuth=want
and I no longer see any SSL errors.
Any tips/suggestions on how to fix this SSL error without upgrading (I don't want to update at the moment to avoid other conflicts like Kafka Cruise Control and others).
Thanks in advance!