SmartSense Agent refusing to connect after upgrade...

Having a really annoying issue where the agents are refusing to connect to the server. Tried resetting agents via hst reset-agent and tried re-installing smartsense. Here is the error and stack trace from /var/log/hst/hst-agent.log: INFO 2017-09-26 15:00:01,314 security.py:178 - Server certificate not exists, downloading INFO 2017-09-26 15:00:01,314 security.py:191 - Downloading server cert from https://serverhost:9440/cert/ca/ ERROR 2017-09-26 15:00:01,370 ServerAPI.py:69 - GET https://serverhost:9441/api/v1/agents failed. (SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)'),) INFO 2017-09-26 15:02:08,491 security.py:178 - Server certificate not exists, downloading INFO 2017-09-26 15:02:08,492 security.py:191 - Downloading server cert from https://serverhost:9440/cert/ca/ ERROR 2017-09-26 15:02:08,547 ServerAPI.py:84 - GET https://serverhost:9441/api/v1/hst_agents/serverhost failed. (SSLError(1, u'[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)'),) Whenever I try to run hst setup-agent -q after resetting I get the following error: Failed to register agent with the server. Check SmartSense tool server is running at https://serverhost:9441 Please note, I've removed the host name for security. Tried doing the following: https://docs.hortonworks.com/HDPDocuments/SS1/SmartSense-1.4.0/bk_installation/content/SSL_troubleshooting.html Running SmartSense 1.4.0.2.5.1.0-159 with HDP 2.6.1.129 and Ambari 2.5.1.0 Please note, I've confirmed HST Server is running and up, and I've reset it/uninstalled/reinstalled etc. Any ideas? ... View more