[Nagiosplug-help] check_http and missing DNS fallback

[Steffen Poulsen]

Hi lei,

Thanks for your feedback, unfortunately using the -I has its "static" side effects that we would like to avoid. 

Best regards,
Steffen

-----Original Message-----
From: lei chen [mailto:cloved at gmail.com] 
Sent: 31. marts 2009 09:12
To: Nagios Plugin Help List
Subject: Re: [Nagiosplug-help] check_http and missing DNS fallback

Try to use  -I <IP-address> to specify the IP Addr, instead of using
dns resolve.

Such as that:
./check_http -I 211.103.181.199  -H www.itnms.net  -u / -f warning -p
80 -w 3 -c 5 -t 10



2009/3/30 Steffen Poulsen <sp at tdchosting.dk>:
> Hi,
>
>
>
> Is there any way to make check_http fallback on dns service used (like other
> services at the machine)?
>
>
>
> A little test reveals that apparently only the primary DNS server is in use,
> the second and following name servers are ignored.
>
>
>
> --
>
>
>
> [root at nag-test nagios-plugins-1.4.13]# ./plugins/check_http -H <hostname> -u
> / -f warning -p 80 -w 3 -c 5 -t 10
>
> HTTP OK HTTP/1.1 200 OK - 356 bytes in 0.013 seconds
> |time=0.012519s;3.000000;5.000000;0.000000 size=356B;;;0
>
>
>
> [root at nag-test nagios-plugins-1.4.13]# iptables -A INPUT -s <primary dns> -j
> DROP
>
>
>
> [root at nag-test nagios-plugins-1.4.13]# ./plugins/check_http -H <hostname> -u
> / -f warning -p 80 -w 3 -c 5 -t 10
>
> CRITICAL - Socket timeout after 10 seconds
>
>
>
> --
>
>
>
> I know there is  a "-I" parameter for passing in the ip directly to the
> check, but this is not the behavior I'm after - I still want the check to be
> dynamic with regards to the IP address for the service.
>
>
>
> I hope I'm just missing the obvious?
>
>
>
> Best regards,
>
> Steffen
>
>
>
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>
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>
>



-- 
Thanks,
Chenlei & 石头++
MSN Messenger: chnl at 163.com

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