Event Handlers Problem

Thomas Beecher tbeecher at localnet.com
Wed May 4 21:31:04 CEST 2005
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Do you think that it may make more sense to try to grab the macro values 
with Getopt::Long instead of command line ARGVs?


Thomas Beecher II
Network Administrator
LocalNet, Inc
tbeecher at localnet.com

admin at jpk236.com wrote:
> Thomas,
>     Can we see the contents of this perl script you wrote?  Perhaps it's 
> a problem within the script?  Thanks.
> 
>  - Justin Kulikowski
>     [ http://www.jpk236.com ]
> 
> Thomas Beecher wrote:
> 
>> Well, that was a serious brain fart on my part!!
>>
>> I moved the script to /usr/local/nagios/libexec/, and changed 
>> checkcommands.cfg to show:
>>
>> define command{
>>         command_name    restart_pm3
>>         command_line    $USER1$/restart_pm3.pl $HOSTNAME$ $HOSTSTATE$
>>         }
>>
>> $USER1$ is defined in resource.cfg as
>>
>> $USER1$=/usr/local/nagios/libexec
>>
>> Permissions on the file are:
>>
>> -rwxr-xr-x  1 nagios   nagios   1701 2005-05-04 10:47 restart_pm3.pl
>>
>> I've changed the ownership to nagios/nagios to prevent any other 
>> potential permission issues.
>>
>> This returns the following:
>>
>> [1115221615] HOST ALERT: buftest;DOWN;SOFT;1;Telnet: CRITICAL - Socket 
>> timeout after 1 seconds<br>SNMP: CRITICAL: snmpget returned errors: 1 
>> (  )<br>PING: CRITICAL - Host Unreachable (10.0.2.152)
>> [1115221615] HOST EVENT HANDLER: buftest;DOWN;SOFT;1;restart_pm3
>> [1115221625] HOST ALERT: buftest;DOWN;SOFT;2;Telnet: CRITICAL - Socket 
>> timeout after 1 seconds<br>SNMP: CRITICAL: snmpget returned errors: 1 
>> (  )<br>PING: CRITICAL - Host Unreachable (10.0.2.152)
>> [1115221625] HOST EVENT HANDLER: buftest;DOWN;SOFT;2;restart_pm3
>> [1115221634] HOST ALERT: buftest;DOWN;SOFT;3;Telnet: CRITICAL - Socket 
>> timeout after 1 seconds<br>SNMP: CRITICAL: snmpget returned errors: 1 
>> (  )<br>PING: CRITICAL - Host Unreachable (10.0.2.152)
>> [1115221634] HOST EVENT HANDLER: buftest;DOWN;SOFT;3;restart_pm3
>>
>> It doesn't error out, and seems to call the script, but it still 
>> doesn't run.
>>
>> I have not tested the script as the Nagios user, however the front of 
>> the script is set to dump whatever args get passed to it out to a file 
>> before doing anything else, so if it was choking somwhere in the 
>> script it would still be logged that it ran.
>>
>> Thomas Beecher II
>> Network Administrator
>> LocalNet, Inc
>> tbeecher at localnet.com
>>
>> Marc Powell wrote:
>>
>>>
>>>> -----Original Message-----
>>>> From: nagios-users-admin at lists.sourceforge.net [mailto:nagios-users-
>>>> admin at lists.sourceforge.net] On Behalf Of Thomas Beecher
>>>> Sent: Wednesday, May 04, 2005 9:31 AM
>>>> To: nagios-users at lists.sourceforge.net
>>>> Subject: [Nagios-users] Event Handlers Problem
>>>>
>>>> I am working with the Nagios event handlers, and I'm coming across a
>>>> problem I can't seem to get a handle on.
>>>>
>>>> I've got a perl script (restart_pm3.pl) that I want to be called as a
>>>> host event handler, and pass two macros: $HOSTNAME$ and $HOSTSTATE$.
>>>
>>>
>>>
>>> At
>>>
>>>> present, I have the following set up:
>>>>
>>>> In hosts.cfg
>>>>
>>>> define host{
>>>>         use             generic-host
>>>>         host_name       buftest
>>>>         alias           buftest
>>>>         address         10.0.2.152
>>>>         contact_groups  noc
>>>>         event_handler   restart_pm3
>>>> }
>>>>
>>>> In checkcommands.cfg
>>>>
>>>> define command{
>>>>         command_name    restart_pm3
>>>>         command_line    /home/tbeecher/test_scripts/restart_pm3.pl
>>>> $HOSTNAME$ $HOSTSTATE$
>>>> }
>>>>
>>>>
>>>> The Nagios logs show that the even handler is called when the service
>>>> checks fail and the host goes down:
>>>>
>>>> [1115216792] HOST ALERT: buftest;DOWN;HARD;10;Telnet: CRITICAL -
>>>
>>>
>>>
>>> Socket
>>>
>>>> timeout after 1 seconds<br>SNMP: CRITICAL: snmpget returned errors: 1
>>>
>>>
>>>
>>> (
>>>
>>>>  )<br>PING: CRITICAL - Host Unreachable (10.0.2.152)
>>>> [1115216792] HOST EVENT HANDLER: buftest;DOWN;HARD;10;restart_pm3
>>>>
>>>> So far so good right?
>>>>
>>>> Well, the actual perl script is never executed. I have execute
>>>> permissions on it for everyone, and edited it so it logs every time it
>>>> is executed, and what ARGVs were passed to it. Works fine when called
>>>> manuallt from a command line, but Nagios never calls is. Any insight?
>>>
>>>
>>>
>>>
>>> On most modern systems, user accounts in /home are only accessible by
>>> that user (i.e. tbeecher in your case). Are the permissions on
>>> /home/tbeecher such that the nagios user can access the directory? I
>>> know you said you tested it from the command line but you didn't specify
>>> if your test was run as the nagios user.
>>>
>>> -- 
>>> Marc
>>>
>>>
>>> -------------------------------------------------------
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>>
>>
>>
>>
>>
>> -------------------------------------------------------
>> This SF.Net email is sponsored by: NEC IT Guy Games.
>> Get your fingers limbered up and give it your best shot. 4 great 
>> events, 4
>> opportunities to win big! Highest score wins.NEC IT Guy Games. Play to
>> win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20
>> _______________________________________________
>> 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 SF.Net email is sponsored by: NEC IT Guy Games.
> Get your fingers limbered up and give it your best shot. 4 great events, 4
> opportunities to win big! Highest score wins.NEC IT Guy Games. Play to
> win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20
> _______________________________________________
> 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 SF.Net email is sponsored by: NEC IT Guy Games.
Get your fingers limbered up and give it your best shot. 4 great events, 4
opportunities to win big! Highest score wins.NEC IT Guy Games. Play to
win an NEC 61 plasma display. Visit http://www.necitguy.com/?r=20
_______________________________________________
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
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