Non obvious 127 plugin error

[Giorgio Zarrelli]

We are making guesses, so check ulimits.conf

Ciao,

Giorgio

Il giorno 02/giu/2011, alle ore 15:58, Craig Stewart <Craig.Stewart at corp.xplornet.com> ha scritto:

> Giorgio,
> 
> It's bash.
> 
> [root at nms tmp]# ls -l /bin/sh
> lrwxrwxrwx. 1 root root 4 May 31 11:39 /bin/sh -> bash
> [root at nms tmp]#
> 
> I've been doing a bit of reading and it looks like the maximum arguments
> is a kernel setting built at compile time.  I'm having a hard time
> wrapping my head around how the check works when run directly and fails
> when called by the Nagios process.
> 
> I'm starting to wonder if I should point the /bin/sh to something like
> csh or some such as a test.
> 
> Craig
> --
> Craig Stewart
> Systems Integration Analyst
> Craig.Stewart at corp.xplornet.com Tel: (506) 328-1245 Cell: (506) 425-0111
> Xplornet - Broadband, Everywhere
> 
> On 06/02/2011 10:43 AM, Giorgio Zarrelli wrote:
>> Check wether your shell is a Dash or a Bash. That means, check where the
>> /bin/sh symlink is pointing to.
>> 
>> Ciao,
>> 
>> Giorgio
>> 
>> Il giorno 02/giu/2011, alle ore 14:43, Craig Stewart
>> <Craig.Stewart at corp.xplornet.com> ha scritto:
>> 
>>> All,
>>> 
>>> SELinux was enabled (DOH!) and has been now disabled.  Didn't fix my
>>> problem though.  Thanks for that Clint, I don't know HOW many times
>>> SELinux has bitten me.  Should know by now.
>>> 
>>> I ran the strace as suggested by Justin and saw THIS little tidbit
>> flash by:
>>> 
>>> 11769 execve("/bin/sh", ["sh", "-c", "/usr/lib/nagios/plugins/check_dig
>>> -H 142.166.86.18 -l www.xplornet.com -a 142.166.86.46 -w 0.5 -c 1 -t
>>> 5"], [/* 189 vars */]) = -1 E2BIG (Argument list too long)
>>> 11751 --- {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11769,
>>> si_status=127, si_utime=0, si_stime=0} (Child exited) --
>>> 
>>> Argument list too long????  So, SOMETHING (I suspect the shell) doesn't
>>> like that many arguments passed.  Well, making progress.
>>> 
>>> By the way, this is a bone stock OS install (Fedora 15 currently) and I
>>> haven't tweaked anything.
>>> 
>>> Cheers all!
>>> 
>>> Craig
>>> --
>>> Craig Stewart
>>> Systems Integration Analyst
>>> Craig.Stewart at corp.xplornet.com
>>> Xplornet - Broadband, Everywhere
>>> 
>>> On 06/01/2011 05:36 PM, Clint Dilks wrote:
>>>> Hi
>>>> 
>>>> Just wondering if SE Linux is disabled on your system?  If not check
>>>> your audit log and see if access to the plugin is being denied
>>>> 
>>>> On Thu, Jun 2, 2011 at 8:15 AM, Justin T Pryzby <justinp at norchemlab.com
>>>> <mailto:justinp at norchemlab.com>> wrote:
>>>> 
>>>>   You can also strace the main nagios process:
>>>>   strace -fs999 -e execve -p PID_OF_NAGIOS
>>>>   or
>>>>   sudo strace -fs999 -e execve -p `ps o pid h -C nagios3 --sort
>>>>   start_time |sed q` 2>&1 |grep -Fw execve |grep -Fw check_dig
>>>> 
>>>>   127 is the return status of the shell when a command isn't found:
>>>>   justinp at justinp:~$ asdf; echo $?
>>>>   bash: asdf: command not found
>>>>   127
>>>> 
>>>>   man sh => /EXIT STATUS/
>>>> 
>>>>   Justin
>>>> 
>>>>   On Wed, Jun 01, 2011 at 04:23:05PM -0300, Craig Stewart wrote:
>>>>> Giorgio
>>>>> 
>>>>> As apache user:
>>>>> 
>>>>> bash-4.2$ /usr/lib/nagios/plugins/check_dig -H 72.45.111.250
>>>>   <tel:72.45.111.250> -l
>>>>> www.xplornet.com <http://www.xplornet.com> -a 142.166.86.46 -w 0.5
>>>>   -c 1 -t 5
>>>>> DNS OK - 0.096 seconds response time (www.xplornet.com
>>>>   <http://www.xplornet.com>. 864 IN A
>>>>> 142.166.86.46)|time=0.095553s;0.500000;1.000000;0.000000
>>>>> 
>>>>> 
>>>>> You understand my confusion.
>>>>> 
>>>>> Craig
>>>>> 
>>>>> Craig Stewart
>>>>> Systems Integration Analyst
>>>>> Craig.Stewart at corp.xplornet.com
>>>>   <mailto:Craig.Stewart at corpxplornet.com
>> <mailto:Craig.Stewart at corp.xplornet.com>> Tel: (506) 328-1245
>>>>   <tel:%28506%29%20328-1245> Cell: (506) 425-0111
>>>>   <tel:%28506%29%20425-0111>
>>>>> Xplornet - Broadband, Everywhere
>>>>> 
>>>>> On 06/01/2011 04:18 PM, Giorgio Zarrelli wrote:
>>>>>> Hi,
>>>>>> 
>>>>>> I'm curious. Please, do a su - as the apache user and execute
>>>>   the check
>>>>>> as that user.
>>>>>> 
>>>>>> Ciao,
>>>>>> 
>>>>>> Giorgio
>>>>> 
>>>>> 
>>>> 
>> ------------------------------------------------------------------------------
>>>>> Simplify data backup and recovery for your virtual environment
>>>>   with vRanger.
>>>>> Installation's a snap, and flexible recovery options mean your
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>>>>> Nope - It's vRanger. Get your free trial download today.
>>>>> http://p.sf.net/sfu/quest-sfdev2dev
>>>>> _______________________________________________
>>>>> Nagios-users mailing list
>>>>> Nagios-users at lists.sourceforge.net
>>>>   <mailto: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
>>>>> 
>>>> 
>>>> 
>> ------------------------------------------------------------------------------
>>>>   Simplify data backup and recovery for your virtual environment with
>>>>   vRanger.
>>>>   Installation's a snap, and flexible recovery options mean your data
>>>>   is safe,
>>>>   secure and there when you need it. Data protection magic?
>>>>   Nope - It's vRanger. Get your free trial download today.
>>>>   http://p.sf.net/sfu/quest-sfdev2dev
>>>>   _______________________________________________
>>>>   Nagios-users mailing list
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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
>>>> 
>>>> 
>>>> 
>>>> --
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>>> 
>>> 
>> ------------------------------------------------------------------------------
>>> Simplify data backup and recovery for your virtual environment with
>> vRanger.
>>> Installation's a snap, and flexible recovery options mean your data is
>> safe,
>>> secure and there when you need it. Data protection magic?
>>> Nope - It's vRanger. Get your free trial download today.
>>> http://p.sf.net/sfu/quest-sfdev2dev
>>> _______________________________________________
>>> 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
>> 
>> ------------------------------------------------------------------------------
>> Simplify data backup and recovery for your virtual environment with vRanger.
>> Installation's a snap, and flexible recovery options mean your data is safe,
>> secure and there when you need it. Data protection magic?
>> Nope - It's vRanger. Get your free trial download today.
>> http://p.sf.net/sfu/quest-sfdev2dev
>> _______________________________________________
>> 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
>> 
>> --
>> This message has been scanned by MailScanner
>> 

------------------------------------------------------------------------------
Simplify data backup and recovery for your virtual environment with vRanger. 
Installation's a snap, and flexible recovery options mean your data is safe,
secure and there when you need it. Data protection magic?
Nope - It's vRanger. Get your free trial download today. 
http://p.sf.net/sfu/quest-sfdev2dev
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