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

Products

• CA Network Flow Analysis (NetQos / NFA)

Issue/Introduction

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: 

 

[[email protected] 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:

   [[email protected] 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

Environment

Release: RAIB1H99000-9.3-Network Flow Analysis-Interface Bundle-Hardware
Component: