Installation failed. Failed to receive heartbeat from agent.
Ensure that the host's hostname is configured properly.
Ensure that port 7182 is accessible on the Cloudera Manager Server (check firewall rules).
Ensure that ports 9000 and 9001 are free on the host being added.
Check agent logs in /var/log/cloudera-scm-agent/ on the host being added (some of the logs can be found in the installation details).
the red setences in details:
>>[21/Sep/2014 15:33:18 +0000] 29330 MainThread agent ERROR Failed to connect to previous supervisor.
>>error: [Errno 111] Connection refused