NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol

kunalrj946 — Fri, 11 Jan 2019 04:51:52 GMT

As per your suggested video link https://www.youtube.com/watch?v=wHaVBoLwzwU i have done all network setup ...and installation of ambari server and ambari-agent...successfully by local repo ....-

When i adding only master , there is error to register .....

see in ambari-agent log file .....

INFO 2019-01-10 08:35:21,750 main.py:145 - loglevel=logging.INFO
INFO 2019-01-10 08:35:21,751 main.py:145 - loglevel=logging.INFO
INFO 2019-01-10 08:35:21,751 main.py:145 - loglevel=logging.INFO
INFO 2019-01-10 08:35:21,754 DataCleaner.py:39 - Data cleanup thread started
INFO 2019-01-10 08:35:21,756 DataCleaner.py:120 - Data cleanup started
INFO 2019-01-10 08:35:21,758 DataCleaner.py:122 - Data cleanup finished
INFO 2019-01-10 08:35:21,820 PingPortListener.py:50 - Ping port listener started on port: 8670
INFO 2019-01-10 08:35:21,823 main.py:437 - Connecting to Ambari server at https://master.alethe.com:8440 (192.168.1.191)
INFO 2019-01-10 08:35:21,824 NetUtil.py:70 - Connecting to https://master.alethe.com:8440/ca
ERROR 2019-01-10 08:35:21,871 NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol
ERROR 2019-01-10 08:35:21,871 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 2019-01-10 08:35:21,871 NetUtil.py:124 - Server at https://master.alethe.com:8440 is not reachable, sleeping for 10 seconds...

Also i have find the answer in below link

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

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

but in my System /etc/python is not available , how to find /python/cert-verificatin.cfg to change the verify=disable

My Operating System is Centos 7

HDP2.6.3 AND AMBARI2.6

Re: NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol

jsensharma — Fri, 11 Jan 2019 04:56:18 GMT

@Kunal Kumar

As you are getting the following error:

NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol

To solve this problem simply configure the Ambari Agent to use TLSv1.2 when communicating with the Ambari Server by editing each Ambari Agent’s /etc/ambari-agent/conf/ambari-agent.ini file and adding the following configuration property to the security section:

[security]
force_https_protocol=PROTOCOL_TLSv1_2

Refer to a detailed explanation on this flag in the following article: https://community.hortonworks.com/articles/188269/javapython-updates-and-ambari-agent-tls-settings.html

Regarding your query "how to find /python/cert-verificatin.cfg" ?

There is no need to set the verify=disable for this issue . However if you want to do it then you will have to manually create the mentioned file with the verify=disable.

question NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol in Support Questions

NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol

Re: NetUtil.py:96 - [Errno 8] _ssl.c:504: EOF occurred in violation of protocol