https://community.cloudera.com/t5/Support-Questions/Why-won-t-HandleHTTPRequest-bind-to-a-secure-SSL-port/m-p/204666#M166655 <P>I had the same problem because I would like to reuse keystore created to securized Nifi UI and because of the usage dedicated to Nifi (TLS including client authentication), it can't be simply use to activate TLS. <BR /><BR /><STRONG>Symptom</STRONG>: java.net.BindException: Address already in use: bind<BR /><BR /><STRONG>Clue</STRONG>: If you search for the the first exception, in my case, it was "java.security.UnrecoverableKeyException: Cannot recover key"<BR /><BR />So I guess, the server can't get the key even if SSLContext starts correctly and, as the server starts anormally, Nifi tries to restart and then a Bind exception raises.<BR /><BR /><STRONG>I just regenerated a very classic jks store </STRONG>for server authentication usage using <EM>keytool -genkey ...</EM> and all went like a charm ...<BR /><BR />Hope that help</P><P>Jean-Louis</P>,<P>I had the same problem because I would like to reuse keystore created to securized Nifi UI and because of the usage dedicated to Nifi (TLS including client authentication), it can't be simply use to activate TLS. </P><P><STRONG>Symptom</STRONG>: java.net.BindException: Address already in use: bind</P><P><STRONG>Clue</STRONG>: If you search for the the first exception, in my case, it was "java.security.UnrecoverableKeyException: Cannot recover key"</P><P>So I guess, the server can't get the key even if SSLContext start correctly !!</P><P><STRONG>I just regenerated a very classic jks store</STRONG> for server authentication usage using <EM>keytool -genkey ...</EM> and all went like a charm ...</P><P>Hope that help</P> Fri, 02 Mar 2018 04:16:45 GMT jlvila 2018-03-02T04:16:45Z