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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Problem:

 

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.

 

Environment:  

 

NFA 9.1+

RedHat Linux 5+

 

Cause: 

 

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.

 

Resolution:

  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.
    127.0.0.1 localhost localhost.localdomain localhost
    ::1 localhost6.localdomain6 localhost6
    10.0.0.10 NFAHARV
    where:
     10.0.0.10 = 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:

 

https://docops.ca.com/display/NFA933/DNS+Name+Resolution