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ERROR    Heartbeating to failed.

Getting this error when connecting cloudera-scm-agents to the server?

[06/Jul/2019 16:16:55 +0000] 23442 MainThread agent        ERROR    Heartbeating to srv-c01.mws.mds.xyz:17182 failed.
Traceback (most recent call last):
  File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/agent.py", line 1387, in _send_heartbeat
  File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/cmf/https.py", line 139, in __init__
  File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/M2Crypto/httpslib.py", line 69, in connect
    sock.connect((self.host, self.port))
  File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/M2Crypto/SSL/Connection.py", line 309, in connect
    ret = self.connect_ssl()
  File "/opt/cloudera/cm-agent/lib/python2.7/site-packages/M2Crypto/SSL/Connection.py", line 295, in connect_ssl
    return m2.ssl_connect(self.ssl, self._timeout)
SSLError: unknown protocol

Enable TLS encryption for agents:

Administration -> Settings -> Use TLS Authentication of Agents to Server


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