SNMP device polling will not work on newly installed RedHat NFA Harvester

Document ID : KB000036974
Last Modified Date : 14/02/2018
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When doing an SNMP discovery it comes back very quickly with "profile not found" and does not send any request packets from the harvester to the device at all.




NFA 9.1+

RedHat Linux 5+




The RedHat Harvester must be able to do a reverse DNS on itself to get it's own IP Address. To test this run: 


[root@NFAHARV ReaperArchive15]# hostname -i


If "hostname -i" doesn't return a hostname than see the resolution below.



  1. Log in to the Harvester server as root or with a sudo user account.
  2. Open the /etc/hosts file in a text editor.
  3. Add a line that associates the IP address with the local host name, as shown in the following example:

    [root@NFAHARV ReaperArchive15]# more /etc/hosts;
    # Do not remove the following line, or various programs
    # that require network functionality will fail. localhost localhost.localdomain localhost
    ::1 localhost6.localdomain6 localhost6 NFAHARV
    where: = IP address of the Harvester server
     NFAHARV = Host name of the Harvester server
  4. Save and close the /etc/hosts file.
  5. Restart the CA Network Flow Analysis services on the Harvester server, including the following services:
    • NFA CollpollWS (nfa_collpollws): CA NFA Collection and Poller Webservices
    • NFA Proxies (nfa_proxies): CA NFA DNS/SNMP Proxies
    • NFA Poller (nfa_poller): CA NFA Poller
    Your change takes effect immediately.


Additional Information: