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Re: [monit] monit fails mysteriously on refresh after upgrade from Debi
From: |
Jenny Hopkins |
Subject: |
Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny |
Date: |
Wed, 25 Feb 2009 12:50:30 +0000 |
2009/2/24 Martin Pala <address@hidden>:
>
> floating point exception could bean divide by zero ... one matching bug was
> fixed in upcoming monit-5.x:
>
> * Fixed possible crash when monit is watching VPS environment on
> Linux which reports number of CPUs as 0. Thanks to Marius
> Schmidt for report.
>
> => is monit running in virtual environment? if so (and if linux host reports
> 0 CPUs), upgrade to monit 5.x will solve the problem. You can get the monit
> source code here: http://www.mmonit.com/monit/download/
>
Yes, it's a xen virtual machine.
/proc/cpuinfo shows processor : 0
and the gdb/bt shows
#0 0x08053f62 in ?? ()
#1 0x0000522f in ?? ()
#2 0x082bc788 in ?? ()
#3 0x00000046 in ?? ()
#4 0xfbad8001 in ?? ()
#5 0x082b9210 in ?? ()
#6 0x082b9210 in ?? ()
#7 0x80000000 in ?? ()
#8 0x082b9210 in ?? ()
#9 0x082bdb40 in ?? ()
#10 0x082b930f in ?? ()
#11 0x037f0c7f in ?? ()
#12 0x00000000 in ?? ()
>
> To get the root cause, you can analyze the coredump using gdb:
>
> 1.) gdb <path to monit> <path to coredump>
> 2.) bt
>
> This will show backtrace and also allows to compare the data. If you will
> need help, let me know.
>
>
I don't quite know what to do with the data above, or if it can be
used to make a fix?
Debian unstable still uses monit-1.4, so to get past this
reported/fixed bug I suppose I'll have to install from source rather
than the debian package, as you suggest.
>
>> (By the way: do I need to turn coredump enabling off again?)
>
> coredumps are usually helpful for root causing crashes - you can disbale it,
> but in general it doesn't hurt - i usually use it everywhere in production
> so if something bad happens to any process, it's possible to backtrace the
> reason
>
>
This is all new to me, and most helpful.
Many thanks for the help.
Jenny
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, (continued)
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/23
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jan-Henrik Haukeland, 2009/02/23
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jan-Henrik Haukeland, 2009/02/23
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jenny Hopkins, 2009/02/23
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/24
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jenny Hopkins, 2009/02/24
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jenny Hopkins, 2009/02/24
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/24
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny,
Jenny Hopkins <=
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/25
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jenny Hopkins, 2009/02/26
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/26
- Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Jenny Hopkins, 2009/02/27
Re: [monit] monit fails mysteriously on refresh after upgrade from Debian etch to lenny, Martin Pala, 2009/02/27