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.
- make sure dns is in /etc/nsswitch.conf host entry.
- ping terminal.sub.test.com works.
- /etc/resolv.conf is configured with new dns servers and their ips.
- clean out "/var/opt/hobbitserver42/tmp/*..status files and restart hobbit server.
Is there any better way to debug the issue ?
- Example error message.
Wed Jul 30 07:50:51 2008: DNS error
http://terminal.sub.test.com/ - DNS error
Seconds: 0.00
- 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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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
^^^^^^^^^^^^^^^^^^^^^^^^ flip-flopping, I meant.
tj
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.
- make sure dns is in /etc/nsswitch.conf host entry.
- ping terminal.sub.test.com works.
- /etc/resolv.conf is configured with new dns servers and their ips.
- clean out "/var/opt/hobbitserver42/tmp/*..status files and restart hobbit server.
Is there any better way to debug the issue ?
- Example error message.
Wed Jul 30 07:50:51 2008: DNS error
http://terminal.sub.test.com/ - DNS error
Seconds: 0.00
- 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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Hi all
Interesting problem here. Trying to graph some data. Output is all OK, test looks good, some information appears, and somewhere in the status are the single lines Data1=value1 Data2=value2 All good.
Problem though, in the status text that appears on the screen, there are some colons. : As we all know, the ncv module can use information in the form Data1=value1 Or Data1 : value1 So it's interpreting those lines with the : as graph data, and trying to stick it into the rrd file, with somewhat tragic results.
Any idea how to convince the ncv graphing module to ignore the : as a data seperator, and only look at = ?
Cheers Vernon
NOTICE: This email and any attachments are confidential. They may contain legally privileged information or copyright material. You must not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages and all attachments.
Why not pre-process the data before it gets to hobbit and remove the ":"'s?
Phil
2008/7/31 Everett, Vernon <Vernon.Everett at woodside.com.au>:
Hi all
Interesting problem here. Trying to graph some data. Output is all OK, test looks good, some information appears, and somewhere in the status are the single lines Data1=value1 Data2=value2 All good.
Problem though, in the status text that appears on the screen, there are some colons. : As we all know, the ncv module can use information in the form Data1=value1 Or Data1 : value1 So it's interpreting those lines with the : as graph data, and trying to stick it into the rrd file, with somewhat tragic results.
Any idea how to convince the ncv graphing module to ignore the : as a data seperator, and only look at = ?
Cheers Vernon
NOTICE: This email and any attachments are confidential. They may contain legally privileged information or copyright material. You must not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages and all attachments.
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-- Tel: 0400 466 952 Fax: 0433 123 226 email: philwild AT gmail.com
We can do that, but I was hoping not to. The info is ip:port, which is traditionally displayed with a : If we have to, I will.
-----Original Message----- From: Phil Wild [mailto:philwild at gmail.com] Sent: Thursday, 31 July 2008 4:58 PM To: hobbit at hswn.dk Subject: Re: [hobbit] More rrd graphing - how to ignore :
Why not pre-process the data before it gets to hobbit and remove the ":"'s?
Phil
2008/7/31 Everett, Vernon <Vernon.Everett at woodside.com.au>:
Hi all
Interesting problem here. Trying to graph some data. Output is all OK, test looks good, some information appears, and somewhere in the status are the single lines Data1=value1 Data2=value2 All good.
Problem though, in the status text that appears on the screen, there are some colons. : As we all know, the ncv module can use information in the form Data1=value1 Or Data1 : value1 So it's interpreting those lines with the : as graph data, and trying to stick it into the rrd file, with somewhat tragic results.
Any idea how to convince the ncv graphing module to ignore the : as a data seperator, and only look at = ?
Cheers Vernon
NOTICE: This email and any attachments are confidential. They may contain legally privileged information or copyright material.
You must not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages and all attachments.
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
-- Tel: 0400 466 952 Fax: 0433 123 226 email: philwild AT gmail.com
To unsubscribe from the hobbit list, send an e-mail to hobbit-unsubscribe at hswn.dk
NOTICE: This email and any attachments are confidential. They may contain legally privileged information or copyright material. You must not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages and all attachments.
participants (3)
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philwild＠gmail.com
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tj_yang＠hotmail.com
-
Vernon.Everett＠woodside.com.au