https://community.cloudera.com/t5/Support-Questions/SSLHandshakeException-between-NiFi-and-NiFi-registry/m-p/187058#M149160 <P>You should ensure that both the NiFi instance and NiFi Registry instance have certificates which include the hostname (in DNS form) in the Subject Alternative Name section to allow RFC 6125 compliant hostname verification. There is a video tutorial for this process available <A href="https://nifi.apache.org/registry.html#" target="_blank">here</A>. </P> Wed, 12 Sep 2018 01:31:44 GMT alopresto 2018-09-12T01:31:44Z