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I am installing cloudera manager on local machine. When trying to add new host getting following error

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).

    i checked the logs,it shows like hostname differs from canonical name

    So I also changed the hostname from /etc/resolv.conf But still getting sam error

sandip divekar
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2 Answers2

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I had the same error for a simple mistake in the file /etc/hosts : Have you checked you have DNS and reverse DNS ?

Then to check if your port is open 7182, you should do a telnet IP 7182 (replace IP by the host of Cloudera Manager Server).

If there are still some problems, maybe you have forgotten to deactivate the firewall (iptables).

Regards, K.

kulssaka
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  • hi how to check for reverse dns?.I am installing 3 node cluster on Centos7 and facing same issue of heartbeat – Taha Naqvi Apr 18 '17 at 09:08
  • Well, you can write in your linux terminal > host [your IP] for example : host 52.30.30.23 And don't forget to check the correctness of your /etc/hosts file. – kulssaka Apr 18 '17 at 09:15
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To resolve this issue you need to check first all port opened on your server service listing to the port no, use command: sudo netstat -lpten

Check if any thing is running on 9000 or 90001, mostly java services required for set up is running on port 9000, and cloudera-scm-agent listner also runs on port 9000. to over come this issue you can re-configure theports as well in /etc/cloudera-scm-agent/config.ini by changing as below:

--------------------------------------------------
## It should not normally be necessary to modify these.
# Port that the CM agent should listen on.
listening_port=9001
-------------------------------------------------

and then restart the cloudera-scm-agent service by command: service cloudera-scm-agent restart

To verify this port is not activated for other sshd service check Ports opened in /etc/ssh/sshd_config.

I hope this resolution will work for others too.

Cheers, Ankit Gupta

Benjamin Lucidarme
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Ankit Gupta
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