Openssl error upon host registration

[#1]

I'm trying to register hostnames in Ambari but getting the error below. We tried to run yum update openssl but its got the latest version. We tried to run yum - update it didn’t help. I also tried removing the other openssl packages openssl-devel-1.0.1e-42.el6.x86_64, openssl098e-0.9.8e-17.el6.centos.2.x86_64 and restarting the ambari server/agents and same error. Tried running yum -y install opens* as well but didn’t help. Any ideas?

ERROR 2015-09-23 09:47:07,402 NetUtil.py:77 - [Errno 8] _ssl.c:492: EOF occurred in violation of protocol
ERROR 2015-09-23 09:47:07,402 NetUtil.py:78 - SSLError: Failed to connect. Please check openssl library versions.
Refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1022468 for more details.
WARNING 2015-09-23 09:47:07,402 NetUtil.py:105 - Server at https://test.org:8440is not reachable, sleeping for 10 seconds...
WARNING 2015-09-23 09:47:07,402 NetUtil.py:105 - Server at https://test.org:8440is not reachable, sleeping for 10 seconds...
INFO 2015-09-23 09:47:14,746 main.py:74 - loglevel=logging.INFO
INFO 2015-09-23 09:47:14,746 main.py:74 - loglevel=logging.INFO
INFO 2015-09-23 09:47:17,403 NetUtil.py:59 - Connecting to https://test.org:8440/ca
WARNING 2015-09-23 09:47:17,404 NetUtil.py:82 - Failed to connect to https://test.org:8440/ca due to [Errno 111] Connection refused
WARNING 2015-09-23 09:47:17,404 NetUtil.py:105 - Server at https://test.org:8440is not reachable, sleeping for 10 seconds...
WARNING 2015-09-23 09:47:17,404 NetUtil.py:105 - Server at https://test.org:8440is not reachable, sleeping for 10 seconds...
ERROR 2015-09-23 09:47:19,780 main.py:315 - Fatal exception occurred:
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 312, in <module>
    main(heartbeat_stop_callback)
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 248, in main
    stop_agent()
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 198, in stop_agent
    sys.exit(1)
SystemExit: 1
ERROR 2015-09-23 09:47:19,780 main.py:315 - Fatal exception occurred:
Traceback (most recent call last):
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 312, in <module>
    main(heartbeat_stop_callback)
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 248, in main
    stop_agent()
  File "/usr/lib/python2.6/site-packages/ambari_agent/main.py", line 198, in stop_agent
    sys.exit(1)
SystemExit: 1

[#2]

I am facing below issue even after upgrading ambari-server,ambari agent, openssl,rebooting ambari,ssh

ERROR 2016-09-20 09:48:52,494 NetUtil.py:77 - [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)
ERROR 2016-09-20 09:48:52,495 NetUtil.py:78 - SSLError: Failed to connect. Please check openssl library versions. 
Refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1022468 for more details.
WARNING 2016-09-20 09:48:52,495 NetUtil.py:105 - Server at https://localhost:8440 is not reachable, sleeping for 10 seconds...
', None)

Connection to localhost closed.
SSH command execution finished
host=localhost, exitcode=0
Command end time 2016-09-20 09:48:54

Registering with the server...
Registration with the server failed.
Can anyone pls help me?
I am using ubuntu 16 OS

[#3]

In our case the problem was that the other nodes have OpenJDK instead of oracle's, installing Oracle JDK on those nodes solves the problem

[#4]

In our case the problem was that the other nodes have OpenJDK instead of oracle's, installing Oracle JDK on those nodes solves the problem

[#5]

I've been stuck with this problem for a day and I've tried everything on this post, but nothing works.

However, the link from this post solved my problem so I thought I should link it to here.

https://community.hortonworks.com/questions/121978/openssl-compatibility.html?childToView=138080#ans...

Basically, disable certificate verification on all nodes

vi /etc/python/cert-verification.cfg
[https]
verify=disable

good luck.

[#6]

[ RESOLVED ]

Gone through same issue only when we are using oVirt Virtualization For our cluster deployment.

Only following solution resolved the problem (Thanks to @bing lv and @Deven Fan:

By adding below config in [security] section of

vi /etc/ambari-agent/conf/ambari-agent.ini
force_https_protocol=PROTOCOL_TLSv1_2

vi /etc/python/cert-verification.cfg 
[https] 
verify=disable

[#7]

Thanks!! These changes should be performed on all hosts

[#8]

Thanks Prashant

[#9]

Perfect solution, it works

[#10]

Hello

I've just add these two line below under security section and it works
[security]
ssl_verify_cert=0
force_https_protocol=PROTOCOL_TLSv1_2