问题
I need to use confluent schema-registry to connect to 0.9 kafka. But for schema-registry 2.0.1 version I didn't see SSL configuration available. Is there a way to enable ssl for schema-registry and kafka-rest to talk to 0.9 kafka?
回答1:
That functionality was only added as of the 3.0 release line. If you want support for 0.9/2.0 releases, you could try either a) taking a 3.0 release and reducing the Kafka dependency to 0.9 versions (this might work, but I think there were other unrelated changes that might require additional changes), or b) backport the SSL changes to a 2.0 version (although I can't be sure off the top of my head whether this version supports everything required to enable security support).
Note that if you follow the upgrade docs, upgrading brokers to enable use of newer client versions is generally relatively painless these days.
来源：https://stackoverflow.com/questions/40644085/confluent-schema-registry-2-0-1-version-with-ssl-configuration