SSL handshake error in admin web page

[shwethanidd]

SSL handshake error is observed in the volttron log when remote authentication request (either from zmq/rmq instance) is observed in admin webpage.

Affected Version

VOLTTRON 8.0

Steps to Reproduce

1. Setup 2 VOLTTRON instance (zmq/rmq) with web enabled
2. Start VOLTTRON
3. Configure forward historian on VOLTTRON 1
4. Open admin web page for the VOLTTRON 2 (https://volttron2:8443) where 'volttron2' is hostname for VOLTTRON 2 instance
5. After logging in, observe authentication request pending from forward historian
6. Check the volttron.log for VOLTTRON2

Additional Details

Traceback (most recent call last):
File "src/gevent/greenlet.py", line 854, in gevent._gevent_cgreenlet.Greenlet.run
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/baseserver.py", line 34, in _handle_and_close_when_done
return handle(*args_tuple)
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/server.py", line 233, in wrap_socket_and_handle
with _closing_socket(self.wrap_socket(client_socket, **self.ssl_args)) as ssl_socket:
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/_ssl3.py", line 798, in wrap_socket
ciphers=ciphers)
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/_ssl3.py", line 311, in init
raise x
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/_ssl3.py", line 307, in init
self.do_handshake()
File "/home/volttron/git/dev_volttron/env/lib/python3.6/site-packages/gevent/_ssl3.py", line 663, in do_handshake
self._sslobj.do_handshake()
File "/usr/lib/python3.6/ssl.py", line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: SSLV3_ALERT_CERTIFICATE_UNKNOWN] sslv3 alert certificate unknown (_ssl.c:852)