I have tried the following, but issue not resolved yet. Any other ideas will be helpful. vi /etc/python/cert-verification.cfg [https] verify=disable ========================== Running setup agent script... ========================== Command start time 2018-05-03 12:22:38 ("INFO 2018-05-03 12:17:42,290 HeartbeatHandlers.py:116 - Stop event received INFO 2018-05-03 12:17:42,290 NetUtil.py:130 - Stop event received INFO 2018-05-03 12:17:42,290 ExitHelper.py:56 - Performing cleanup before exiting... INFO 2018-05-03 12:17:42,290 ExitHelper.py:70 - Cleanup finished, exiting with code:0 INFO 2018-05-03 12:17:42,337 main.py:283 - Agent died gracefully, exiting. INFO 2018-05-03 12:17:42,338 ExitHelper.py:56 - Performing cleanup before exiting... INFO 2018-05-03 12:22:40,287 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,288 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,288 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,289 DataCleaner.py:39 - Data cleanup thread started INFO 2018-05-03 12:22:40,291 DataCleaner.py:120 - Data cleanup started INFO 2018-05-03 12:22:40,291 DataCleaner.py:122 - Data cleanup finished INFO 2018-05-03 12:22:40,291 hostname.py:67 - agent:hostname_script configuration not defined thus read hostname 'ip-172-31-71-94.ec2.internal' using socket.getfqdn(). INFO 2018-05-03 12:22:40,297 PingPortListener.py:50 - Ping port listener started on port: 8670 INFO 2018-05-03 12:22:40,299 main.py:437 - Connecting to Ambari server at https://ip-172-31-xx-94.ec2.internal:8440 (172.31.71.94) INFO 2018-05-03 12:22:40,299 NetUtil.py:70 - Connecting to https://ip-172-31-xx-94.ec2.internal:8440/ca ERROR 2018-05-03 12:22:40,313 NetUtil.py:96 - EOF occurred in violation of protocol (_ssl.c:579) ERROR 2018-05-03 12:22:40,313 NetUtil.py:97 - SSLError: Failed to connect. Please check openssl library versions. Refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1022468 for more details. WARNING 2018-05-03 12:22:40,313 NetUtil.py:124 - Server at https://ip-172-31-xx-94.ec2.internal:8440 is not reachable, sleeping for 10 seconds... ", None) ("INFO 2018-05-03 12:17:42,290 HeartbeatHandlers.py:116 - Stop event received INFO 2018-05-03 12:17:42,290 NetUtil.py:130 - Stop event received INFO 2018-05-03 12:17:42,290 ExitHelper.py:56 - Performing cleanup before exiting... INFO 2018-05-03 12:17:42,290 ExitHelper.py:70 - Cleanup finished, exiting with code:0 INFO 2018-05-03 12:17:42,337 main.py:283 - Agent died gracefully, exiting. INFO 2018-05-03 12:17:42,338 ExitHelper.py:56 - Performing cleanup before exiting... INFO 2018-05-03 12:22:40,287 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,288 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,288 main.py:145 - loglevel=logging.INFO INFO 2018-05-03 12:22:40,289 DataCleaner.py:39 - Data cleanup thread started INFO 2018-05-03 12:22:40,291 DataCleaner.py:120 - Data cleanup started INFO 2018-05-03 12:22:40,291 DataCleaner.py:122 - Data cleanup finished INFO 2018-05-03 12:22:40,291 hostname.py:67 - agent:hostname_script configuration not defined thus read hostname 'ip-172-31-71-94.ec2.internal' using socket.getfqdn(). INFO 2018-05-03 12:22:40,297 PingPortListener.py:50 - Ping port listener started on port: 8670 INFO 2018-05-03 12:22:40,299 main.py:437 - Connecting to Ambari server at https://ip-172-31-xx-94.ec2.internal:8440 (172.31.xx.94) INFO 2018-05-03 12:22:40,299 NetUtil.py:70 - Connecting to https://ip-172-31-xx-94.ec2.internal:8440/ca ERROR 2018-05-03 12:22:40,313 NetUtil.py:96 - EOF occurred in violation of protocol (_ssl.c:579) ERROR 2018-05-03 12:22:40,313 NetUtil.py:97 - SSLError: Failed to connect. Please check openssl library versions. Refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1022468 for more details. WARNING 2018-05-03 12:22:40,313 NetUtil.py:124 - Server at https://ip-172-31-xx-94.ec2.internal:8440 is not reachable, sleeping for 10 seconds... ", None) Connection to ip-172-31-71-94.ec2.internal closed. SSH command execution finished host=ip-172-31-71-94.ec2.internal, exitcode=0 Command end time 2018-05-03 12:22:43 Registering with the server... Registration with the server failed. ... View more