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Unix host - Hardware Monitoring through SNMP

Posted: Mon Feb 22, 2016 5:30 am
by 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

Re: Unix host - Hardware Monitoring through SNMP

Posted: Mon Feb 22, 2016 10:53 am
by hsmith
Can your communicate with the remote host on port 161?

Re: Unix host - Hardware Monitoring through SNMP

Posted: Tue Feb 23, 2016 5:57 am
by 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?

Re: Unix host - Hardware Monitoring through SNMP

Posted: Tue Feb 23, 2016 10:38 am
by lmiltchev
Let's check what snmp packages you have installed on the remote box. Run the following command, and show us the output:

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yum list installed | grep snmp
Is snmpd running?

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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:

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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:

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

3. Restart snmpd:

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service snmpd restart
4. Try snmpwalk from Nagios XI server:

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snmpwalk -v 2c -c public <client ip>
Was the walk successful?

Re: Unix host - Hardware Monitoring through SNMP

Posted: Fri Feb 26, 2016 7:57 am
by 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

Re: Unix host - Hardware Monitoring through SNMP

Posted: Fri Feb 26, 2016 10:44 am
by 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.