Issue #9440 has been updated by Matthaus Litteken.

Category set to cron
Status changed from Unreviewed to Investigating
Assignee set to Matthaus Litteken

Looking into this.
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Bug #9440: Puppet destroys crontab files which contain whitespace before 
variables or comments
https://projects.puppetlabs.com/issues/9440

Author: Jeremy Thornhill
Status: Investigating
Priority: Normal
Assignee: Matthaus Litteken
Category: cron
Target version: 2.7.x
Affected Puppet version: 
Keywords: cron
Branch: 


I believe I've encountered a regression (or a corner case that was not fixed) 
from #1216. Agent and master are both version 2.7.1, cron is vixie-cron.

One of our SAs copied in some variables from an old crontab, and during the 
process he introduced leading whitespace. Such lines should not be treated as 
syntax errors as per the vixie-cron documentation (the leading spaces are 
supposed to be simply ignored).

The crontab he created has leading whitespace (four spaces) before a variable 
assignment, which precedes a valid non-indented cronjob:

<pre>
    FOO=bar
5 0 * * * /usr/local/bin/myjob
</pre>
Puppet behaves really badly in this case; first it gives the following error:
<pre>
err: Could not prefetch cron provider 'crontab': Could not parse line "    
FOO=bar" at root:2
</pre>

and then, it proceeds to discard everything in the existing crontab (#8138 ?), 
with the resulting crontab containing only the entries that are actually 
defined in puppet.

Note that this behavior seems to only happen with indented comments or variable 
assignments. If you indent the actual cron job entry itself, the parser handles 
that properly.


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