The host registration in Red Hat Satellite 6 fails with an SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] due to a certificate verification failure in the _ssl.c file.

Issue

• The Content-host registration process encounters an error and fails.

  # subscription-manager register --org="org" --activationkey="key" 
  
  2019-08-05 14:33:34,315 [ERROR] subscription-manager:29125:MainThread @hwprobe.py:649 - Error during resolving IPv6 address of hostname: host.example.com, [Errno -5] No address associated with hostname
  2019-08-05 14:33:34,333 [ERROR] subscription-manager:29125:MainThread @managercli.py:181 - Error during registration: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
  2019-08-05 14:33:34,334 [ERROR] subscription-manager:29125:MainThread @managercli.py:182 - [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
  
  SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)
  Unable to verify server's identity: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:579)