[hobbit] http checking return "DNS error" message

[T.J. Yang]

Argh, see here for workaround.
http://hobbitmon.sourceforge.net/docs/known-issues.html#dnserror

So DNS server change failed the ares library.


tj
--------------------------------------------------
From: "T.J. Yang" <tj_yang at hotmail.com>
Sent: Wednesday, July 30, 2008 8:24 AM
To: <hobbit at hswn.dk>
Subject: [hobbit] http checking return "DNS error" message

>
> Recently I have a DNS servers change on hobbit server. Ever since then 
> http service checking are Tue Jul 29 14:56:47 2008
>
> So far I have done following.
>
> 1. make sure dns is in /etc/nsswitch.conf host entry.
> 2. ping terminal.sub.test.com works.
> 3. /etc/resolv.conf is configured with new dns servers and their ips.
> 4.  clean out "/var/opt/hobbitserver42/tmp/*..status files and restart 
> hobbit server.
>
> Is there any better way to debug the issue ?
>
> 1. Example error message.
>
> Wed Jul 30 07:50:51 2008: DNS error
>
> http://terminal.sub.test.com/ - DNS error
>
>
> Seconds:     0.00
>
> 2. The batch http checking showing flip-flop on all the machines with http 
> checking.
>
> Tue Jul 29 14:56:47 2008        terminal.sub.test.com   http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        ltelinux3-sol.sub.test.com      http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        ltelinux2-sol.sub.test.com      http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        itsupport.corp.test.com         http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        isdweb1.sub.test.com    http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        isdeclinux3-rsa.sub.test.com    http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        isdeclinux2-rsa.sub.test.com    http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        isdeclinux1-rsa.sub.test.com    http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        dd403.sub.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        dd402.sub.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        dd401.sub.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        dd400.sub.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        li66nsdbm.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        iclinux01-sol.corp.test.com     http 
> red From -> To  green
> Tue Jul 29 14:56:47 2008        hobbit2.sub.test.com    http    red 
> From -> To  green
> Tue Jul 29 14:56:47 2008        bs713.sub.test.com      http    red 
> From -> To  green
> Tue Jul 29 14:56:20 2008        terminal.sub.test.com   http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        ltelinux3-sol.sub.test.com      http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        ltelinux2-sol.sub.test.com      http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        itsupport.corp.test.com         http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        isdweb1.sub.test.com    http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        isdeclinux3-rsa.sub.test.com    http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        isdeclinux2-rsa.sub.test.com    http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        isdeclinux1-rsa.sub.test.com    http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        dd403.sub.test.com      http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        dd402.sub.test.com      http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        dd401.sub.test.com      http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        dd400.sub.test.com      http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        li66nsdbm.test.com      http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        iclinux01-sol.corp.test.com     http 
> green From -> To        red
> Tue Jul 29 14:56:20 2008        hobbit2.sub.test.com    http    green 
> From -> To        red
> Tue Jul 29 14:56:20 2008        bs713.sub.test.com      http    green 
> From -> To        red
>
>
>
>
>
>
> T.J. Yang
>
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