Unix host - Hardware Monitoring through SNMP

[Beena_Jogin]

Hi,

We are trying to monitor a unix host for hardware monitoring through Nagios.

I am getting the error SNMP Critical: No response from remote host.

This is with all the hosts. SNMP service running fine. Not sure y I get this error.

Thanks,
Beena

[hsmith]

Can your communicate with the remote host on port 161?

[Beena_Jogin]

Yes port 161 is open in remote host and no firewall restrictions.

The source is Nagios Management server. DO I need to check anything here?

[lmiltchev]

Let's check what snmp packages you have installed on the remote box. Run the following command, and show us the output:

Code: Select all

yum list installed | grep snmp

Is snmpd running?

Code: Select all

service snmpd status

To rule out a wrongly configured snmpd.conf, do the following simple test.

1. Make a backup of your original snmpd.conf file:

Code: Select all

cd /etc/snmp
cp -p snmpd.conf snmpd.conf.orig

2. Open the snmpd.conf in a text editor, clear everything, and add one line only:

Code: Select all

rocommunity public x.x.x.x

where x.x.x.x is the Nagios XI server IP address.

3. Restart snmpd:

Code: Select all

service snmpd restart

4. Try snmpwalk from Nagios XI server:

Code: Select all

snmpwalk -v 2c -c public <client ip>

Was the walk successful?

[Beena_Jogin]

yes its working now. Successfully configured the hardware monitoring for Unix host.

I was missing the community string. Thanks for your help.

Regards,
Beena

[bwallace]

Glad we were able to help. We'll lock this thread now and feel free to open another should you require assistance with anything else.