Nagios Support Forum

Hello everyone. Do anyone mind to explain what are the following alerts alertng for? and why are reiceved several times for same the same alert?
Thanks.
Best Regards.

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THE SWITCH OR ANY DEVICE BEEN MONITOR IS UP AND ACTIVE. THE HOST HAS BEEN DELETED AND READDED AND DETECTS THE SNMP VERSION 2 (Community). SO WHY FOR THIS AND MANY MORE HOST THE SNMP error: No response appear? How to avoid this?

Info:
WARNING: SNMP error: No response from remote host 10.0.0.1

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WHAT DOES THIS ALERT MEANS? No info retrieved , how can i avoid this alert for recieving?

State: UNKNOWN
Info:
UNKNOWN - No info is being retrieved.

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State: UNKNOWN
Info:
No answer from host

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FOR THIS SPECIFIC ALERT. I RECIEVED 3 TO 4 TIMES THE SAME ALERT. WHY? IS THERE ANYWAY TO CHANGE TO JUST RECEIVE IT ONCE?

State: DOWN
Address: 172.16.76.19
Info: CRITICAL - 172.16.76.19: rta nan, lost 100%
Date/Time: 04/07/2019 08:53:52
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WHY IS NAGIOS NOT DETECTING SNMP OID. WHICH OID IS TRYING TO REACH? HOW TO AVOID. IT?

Info:
WARNING - SNMP OID does not exist

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WHAT IS THIS ALERT FOR? /var/lib/mrtg/172.16.32.28_10024.rr


State: UNKNOWN
Info:
/var/lib/mrtg/172.16.32.28_10024.rrd does not exist.
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DOES THIS ALERT MEANS THE PORT HAS BEEN SHUT DOWN ADMINISTRATIVELY?

State: WARNING
Info:
WARNING: Interface noSuchInstance (index 10135) is administratively down.

Hi Jose,

With respect to the first three messages, it does seem that you maybe experiencing intermittent network issues with this service. However, it is possible to turn off notifications when the state of the service is Unknown.

Got to Configure > CCM > Monitoring > Services, and then search for and click on this service and in the Alert Settings tab you'll find the Notification Options.

FOR THIS SPECIFIC ALERT. I RECEIVED 3 TO 4 TIMES THE SAME ALERT. WHY? IS THERE ANYWAY TO CHANGE TO JUST RECEIVE IT ONCE?

If you set the notification interval in the Alert Settings to 0, Nagios will not re-notify contacts about problems for this service - only one problem notification will be sent out.

WARNING - SNMP OID does not exist

It looks like Nagios is unable to find the OID? Can you try running a SNMPwalk command on this device for the OID?

/var/lib/mrtg/172.16.32.28_10024.rrd does not exist.

If you just set up this service, this is normal as it can take about 10 minutes for the rrd to be created.

WARNING: Interface noSuchInstance (index 10135) is administratively down.

The interface was likely assigned a new index number, can you post the entire check command for this service? Thanks.