How to change hostname of the RHUA server?

Issue

• Need to change the hostname of the RHUA server.

• After setting new hostname of the RHUA server, below error is observed:

  RequestException: POST request
  on
  /pulp/api/v2/repositories/rhel-7-server-rhui-rpms-7Server-x86_64/actions/publish
  / failed with 500 - (u"Connection hostname '<old-hostname>' does not match
  names from peer certificate:
  ['<new-hostname>',
  u'<new-hostname>']",)