check_http times out eventhough website is accessible

[Danny Shurett]

My problem appears to be resolved after a few complaints to the data center
that holds those 3 servers (as well as others that were uneffected).  I am
not sure as to what caused it.  I am running nagios on RH9.


----- Original Message ----- 
From: "Kalle Andersson" <kalle at kontilint.se>
To: "Danny Shurett" <dshurett at alphaomegahosting.com>
Cc: <nagios-users at lists.sourceforge.net>
Sent: Wednesday, September 03, 2003 10:05 AM
Subject: Re: [Nagios-users] check_http times out eventhough website is
accessible


> I also could see that HTTP packets were being returned, but I couldn't
> see what type of packets it was. But I could use lynx to reach the sites.
>
> What platform are you running nagios on?
>
> It might be related though. HTTP continuation packets are packets that
> belong to an older TCP stream, right?
>
> I'll try to do more research as soon as the problem shows up again, I'd
> be thankful if you could do the same!
>
> Danny Shurett wrote:
>
> > Strange thing I am having today that may be related.  I use nagios to
> > monitor about 20 servers.  This morning at exactly 4:55, I lost http
> > connectivity to 3 of them.  I also can't use lynx to get to them either.
> > According to a packet capture, instead of getting the http back from the
> > servers, i get an HTTP continuation message.
> >
> > Not sure if this is related, but just a thought.
> >
> >
> > ----- Original Message ----- 
> > From: "Kalle Andersson" <kalle at kontilint.se>
> > To: <nagios-users at lists.sourceforge.net>
> > Sent: Wednesday, September 03, 2003 8:45 AM
> > Subject: Re: [Nagios-users] check_http times out eventhough website is
> > accessible
> >
> >
> >
> >>Sorry about pushing this issue, but am I alone regarding this issue?
> >>
> >>Kalle Andersson wrote:
> >>
> >>
> >>>But I should've noticed that when using telnet/lynx? There couldn't be
> >>>that much difference between check_http and telnet.
> >>>I can't recall if there was a slight delay when trying to connect to
> >>>those sites, but I'm certain that it didn't take 10 seconds, using lynx
> >>>that is.
> >>>
> >>>By the way, I'm using IP-addresses when connecting, DNS is not an issue
> >>>here.
> >>>
> >>>Once I get the error again I'll try and se if I can get some additional
> >>>information by tracking the syscalls done by check_http.
> >>>
> >>>Marc Powell wrote:
> >>>
> >>>
> >>>>It seems that it might be taking longer than 10 seconds for the plugin
> >>>>to make the request and receive the response. Is that what you are
> >>>>seeung during those times? You might consider extending you plugin
> >>>>timeout value.
> >>>>
> >>>>
> >>>>-- 
> >>>>Marc
> >>>>
> >>>>Sent from a very tiny wireless device with a very tiny unlit keyboard.
> >>>>
> >>>>
> >>>>-----Original Message-----
> >>>>From: Kalle Andersson <kalle at kontilint.se>
> >>>>To: nagios-users at lists.sourceforge.net
> >>>><nagios-users at lists.sourceforge.net>
> >>>>Sent: Fri Aug 29 05:44:46 2003
> >>>>Subject: [Nagios-users] check_http times out eventhough website is
> >>>>accessible
> >>>>
> >>>>Hi everyone!
> >>>>
> >>>>I'm having a strange problem with my nagios setup. I'm running nagios
> >>>>1.0 on top of FreeBSD 4.7.
> >>>>
> >>>>Earlier this week I recieved alerts regarding two websites that I'm
> >>>>monitoring, strange thing was that I could reach them from the
> >>>>survelliance server by using telnet (against port 80) and lynx.
> >>>>
> >>>>check_http returned with "Socket timeout after 10 seconds" and State:
> >>>>Critical
> >>>>
> >>>>This has happened three times, all during tuesday and wednesday this
> >>>>week. I'd be very happy to hear about any ideas regarding this
problem.
> >>>>
> >>>>Thanks in advance.
> >>>>
> >>>>-- 
> >>>>Best regards / Med vänlig hälsning
> >>>>Kalle Andersson, CISSP
> >>>>Säkerhetskonsult / Kontilint Data AB
> >>>>Mail: kalle at kontilint.se
> >>>>Tel: +46-702-420659
> >>>>
> >>>>
> >>>>
> >>>>-------------------------------------------------------
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> >>>>_______________________________________________
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> >>>>::: Please include Nagios version, plugin version (-v) and OS when
> >>>>reporting any issue.
> >>>>::: Messages without supporting info will risk being sent to /dev/null
> >>>>
> >>>
> >>>
> >>
> >>-- 
> >>Best regards / Med vänlig hälsning
> >>Kalle Andersson, CISSP
> >>Säkerhetskonsult / Kontilint Data AB
> >>Mail: kalle at kontilint.se
> >>Tel: +46-702-420659
> >>
> >>
> >>
> >>-------------------------------------------------------
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> >>Welcome to geek heaven.
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> >>_______________________________________________
> >>Nagios-users mailing list
> >>Nagios-users at lists.sourceforge.net
> >>https://lists.sourceforge.net/lists/listinfo/nagios-users
> >>::: Please include Nagios version, plugin version (-v) and OS when
> >
> > reporting any issue.
> >
> >>::: Messages without supporting info will risk being sent to /dev/null
> >>
> >>
> >>
> >
> >
> >
> >
>
>
> -- 
> Best regards / Med vänlig hälsning
> Kalle Andersson, CISSP
> Säkerhetskonsult / Kontilint Data AB
> Mail: kalle at kontilint.se
> Tel: +46-702-420659
>
>
>




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