[cobbler] Finding snippet errors

Harry Hoffman hhoffman at ip-solutions.net
Fri Mar 22 13:57:26 UTC 2013


Jimmi,

Will this fix be pushed out to the 2.4 version that in epel-testing?

Cheers,
Harry

On 03/22/2013 09:46 AM, James Cammarata wrote:
> On Fri, Mar 22, 2013 at 7:05 AM, Robert Jacobson <Robert.C.Jacobson at nasa.gov
>> wrote:
> 
>>  On 3/22/2013 7:30 AM, Harry Hoffman wrote:
>>
>> Have you run "cobbler validateks" on the kickstart file that includes
>> the snippet?
>>
>>
>> Thanks, I didn't know about this -- However, for my particular example of
>> a broken snippet, it doesn't help.  It just stops working with a
>> non-helpful error message when it gets to the kickstart with the problem:
>>
>> Exception occured: <type 'exceptions.NameError'>
>> [etc]
>>
>>
>>  Also, there's the ErrorCatcher class in cheetah (albeit not built into
>> cobbler) that can help with this.
>>
>>
>> Thanks again!   This will probably help for some things.  Still, it
>> doesn't appear to help with my example broken snippet.  At least, not when
>> I did this:
>>     #errorCatcher Echo
>>     #if $break_me == 1
>>     #  no #end if...
>>
>> I did notice that if  you have an undefined variable, it changes the
>> behavior completely.  Without errorCatcher, the kickstart would just have:
>>     $SNIPPET('snippet_with_error')
>> but with errorCatcher, the kickstart is printed with the undefined
>> variable in it.  Maybe this isn't a good thing, because there's no error
>> message anywhere I can find.  i.e. all the errorCatcher does in this case
>> is make the error silent!  At least when "$SNIPPET" is present I know
>> there's an error in it :)
>>
> 
> Cobbler injects the error catching class silently before parsing, so that's
> why that won't work. You could modify templar.py if you wanted, here's the
> patch that I added for 2.4.0:
> 
> https://github.com/cobbler/cobbler/commit/60d5f0131ea2ec0fe8e109f1dab4ac8419ddb502
> 
> 
> 
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