Wrong reading given by nagios

[Andreas Ericsson]

vivek sharma sharma wrote:
> Well now infact i am using check_ping only and with that the
> threshold entry in the command is :
> 
>> command_line    $USER1$/check_ping -H $HOSTADDRESS$ -w 450.0,20% -c
>> 1200.0,95%
>> 
>> 
>> Still in host status it shows as following::
>> 
>> XXXX-XXXX  DOWN 03-14-2005 00:12:35 0d 3h 36m 48s PING CRITICAL -
>> Packet loss = 0%, RTA = 774.70 ms
>> 
>> here the host XXXX-XXXX is getting a loss of 0% and also the rta is
>> only 774.70ms but still it is showing it as critical and also it
>> shows the host down .
>> 

Host checks doesn't have the concept of "warning". It only has "up" or 
"down", meaning warning translates to non-OK, which translates to down.

>> What may be the reason,b'cos at this time i have seen that in betn.
>> there is loss to the host(about 5%) but that shuld not trigger this
>> type of response from nagios.
>> 
>> Any suggestions.
>> 
>> Thanks. vivek
>> 
>> 
>> On Sun, 13 Mar 2005 Andreas Ericsson wrote :
>> 
>>> vivek sharma sharma wrote:
>>> 
>>>> Dear all, I am using Nagios nagios to monitor uptime of few
>>>> routers and switches etc. I am getting two false readings from
>>>> Nagios.
>>> 
>>> 
>>>> 1.) Sometimes it says as time to live exceeded When i have
>>>> configured 95% and 700ms in critical state of check_ping.
>>> 
>>> I assume you're using the check_icmp plugin for this.
>>> 
>>> Time to live exceeded is what you get if 1) there are routing
>>> problems, causing packets to loop indefinitely between two nodes
>>> or two interfaces on the same node. The ttl value was introduced
>>> specifically to prevent this. 2) you have redundant routes to a
>>> host, and the "usual" route goes down while the secondary one is
>>> more than whatever default TTL is set on outgoing packets. You
>>> can try increasing the ttl value on outgoing packets using the -l
>>> flag to check_icmp. The maximum value is 255.
>>> 
>>> 
>>>> 2.) Secondly I am not getting any notification mails from the
>>>> monitor.
>>>> 
>>> 
>>> This is a configuration issue. It is impossible to give detailed
>>> help without detailed error info.
>>> 
>>> -- Andreas Ericsson                   andreas.ericsson at op5.se OP5
>>> AB                             www.op5.se Lead Developer
>>> 
>>> 
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>> 
>> 
> 
> 
> 

-- 
Andreas Ericsson                   andreas.ericsson at op5.se
OP5 AB                             www.op5.se
Lead Developer


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