Nagios Start-up Failure

[Kevin Keane]

Wheeler, Jonathan (STFC,RAL,ESC) wrote:
>> -----Original Message-----
>> From: VINCENT BOB-DMHG67 [mailto:bob.vincent at motorola.com]
>> Sent: 27 August 2009 17:11
>> To: Terry
>>
>> Here is the beginning and the tail end of the debug output generated
>>     
> by
>   
>> adding the settings below.
>> It doesn't seem to indicate any reason why it stops.
>> I'm hoping that someone more familiar with Nagios than I can help.
>>     
>
> I have not been following this thread, but one reason that Nagios fails
> at the very end of its start-up is if the command pipe file (ours is in
> /var/log/nagios/rw/nagios.cmd - defined by parameter command_file in the
> main Nagios configuration file) exists as a file rather than a pipe.  On
> our installation this can occur during Nagios start-up as some of our
> procedures, running from a cron job, write directly to the command pipe
> and will create it as a standard file if it does not exist.  The
> solution is to delete the file and restart the Nagios process.
>   
Interesting observation! I haven't tried it, but one possible way to 
address this is by putting the command pipe file into a directory that 
is read-only to everybody but user Nagios. As long as the cron jobs run 
as a different user (and not as user root, who can always write 
anywhere), they would not be able to create ordinary files in that 
directory, but they would still be able to access the pipe once Nagios 
creates it.

Of course you would then possibly have to handle any errors within the 
cron scripts.

-- 
Kevin Keane
Owner
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