Search Engine: Elastic

Article ID: 131478, created on Sep 18, 2017, last review on Sep 18, 2017

  • Applies to:
  • Business Automation 6.0

Symptoms

The following errors appear in /var/log/watchdog/instance1.log:

Checking ApacheAdmin@test.tld
====================
Logging in...
==> curl https://test.tld/servlet/Turbine/frm/single/event1234submit/doLogin/action/PLoginHandler/op_name/0/referer/test.tld 
ApacheAdmin responce on login:
empty
bw_id: 
No cookie received

or

Checking Apache@test.tld
====================
Sending HTTPS request:
==> GET / HTTPS/1.1 Host: test.tld:443
Reply received:
    HTTP/1.0 900 NET OR SSL ERROR

SSL_connect 17815: 1 - error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version

Web page received:
Server returrned empty page

or

Checking Apache@test.tld
====================
Sending HTTPS request:
==> GET / HTTPS/1.1 Host: resellers.test.tld:443
Reply received:
    HTTP/1.0 900 NET OR SSL ERROR

SSL_connect 17821: 1 - error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version

Web page received:
Server returrned empty page

Such errors began to appear as soon as the list of available SSL protocols was changed in /etc/httpd/conf.d/ssl.conf on the 'affected' servers:

# grep SSLProtocol /etc/httpd/conf.d/ssl.conf
SSLProtocol -all +TLSv1.2

Cause

Watchdog server is deployed on RHEL 5 which does not support TLS higher than v1.0. This information could be found on the official RHEL site.

Resolution

Currently there is no stable workaround. Please check the following knowledge base article.

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