Documentation for setting up SSL postgres and HDP components

[#1]

Cannot find relevant documentation which shows 2-way ssl setup between the ambari-server-database (e.g postgres) and other Ambari (ambari-server)/ HDP(ranger,hive etc) components ... is this supported ?

[#2]

https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.4/bk_security/content/setting_up_2-way_ssl_au...

[#3]

I would need a knox gateway to set this up ? a simple start may be just 1 way ssl between ambari-server and a ssl enabled postgres db .. where do i provide the configurations for the postgres jdbc driver so that the ssl handshake happens ?