Editing CGI files in Nagios

[Mark Young]

On Oct 2, 2008, at 4:03 PM, Mike Carey wrote:

> Is it possible to customize the avail.cgi file to add things like  
> Title and Logos to the Summary and Availability reports that run?   
> Everytime I try to adjust the avail.cgi file in /usr/local/share/ 
> nagios/sbin on a Ubuntu server, the Availability main report page  
> doesn’t come up anymore.
>
> I’ve tried editing it with both vi and nano.  And I’m just testing  
> it with a simple change, like making Nagios, ALL CAPS, in the frame  
> box just to see if it will work.

Hi Mike,

Nagios CGIs are compiled C programs.  You must be more familiar with  
interpreted language CGIs such as perl.  I am guessing the problem is  
that you accidently modified the binary file 'avail.cgi' with you text  
editor.  You will need to either restore from a backup or reinstall/ 
recompile the Nagios binary files.

So if you are still interested in making your changes, you would  
instead need to point your text editor to the Nagios source code  
('nagios-3.0.3/cgi/avail.c' plus the includes in 'nagios-3.0.3/ 
includes'), edit, then recompile. 'avail.c' and the CGIs in general  
are pretty tricky if you are unfamiliar with nagios and C.

Though it sounds like you may be more interested in adding custom  
headers and footers.  There is some documentation in the nagios docs  
here: http://nagios.sourceforge.net/docs/3_0/cgiincludes.html  It will  
allow you an easier way to insert some amounts of html and  
javascript.  I do not use this feature so there may be others that may  
be able to point you to better resources for its use.

Best of luck!

Mark Young
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