Re: Exec a script to determine further action based on return code.

[Brandon Evans]

Brian E. Seppanen wrote:
> I have an action that I need to perform on a regular basis, and the 
> means of determining if the update should be done requires an SQL 
> query.    I can write a script that will return 1 or 0 to define a 
> variable, but how do I provide the feedback to cfengine based on the 
> return code as to whether the action should be performed or not...
>
> Any ideas appreciated?

Here is an example that may help


control:
#  This returns 1 if there is a /home partation, 0 if not
ret_home = ( ExecResult(/bin/sh -c "df -l | grep -E '^/dev' | awk 
'{print $NF}' | grep -c '^/home'"))



classes:
# Here I use strcmp to check if ret_home is a 1 or 0
#  if it is a 1, HomePart is defined
HomePart = ( Strcmp("1","${ret_home}") )


disks:
# Check /home for free space. if less the 25%, define FullHome
HomePart::
  /home/    freespace=25% inform=false define=FullHome force=true

shellcommands:
# If FullHome is defined, echo a little warning message that
# is then emailed to me
FullHome::
   "/bin/echo 'WARNING: /home is very low on disk space!'"


You can skip the whole disk part and run a shell command based
on what Strcmp returns.

HomePart = ( Strcmp("1","${ret_home}") )


--
Thanks,
    Brandon Evans