On Fri, Nov 14, 2008 at 8:43 AM, RijilV <[EMAIL PROTECTED]> wrote:
> In this case you could be kinda sneaky and use the 'onlyif' parameter:
>
> exec { "reload-squid":
> command => "/etc/init.d/squid reload",
> subscribe => Exec["check-squid"],
> refreshonly => true,
> onlyif => "/usr/sbin/squid -k parse",
> }
>
> Though in all honesty your init script should be doing that check (the one
> I just looked at for my setup does) so you could just you the service type.
>
Hi RijilV,
Both points are true. I could use onlyif and/or depend on my init script.
However, there may be other puppet dependencies that fail. For example,
let's assume the following:
class squid::squidguard inherits squid {
file { "squidguard.conf":
path => "/etc/squid/squidguard.conf",
ensure => file,
owner => "root",
group => "squid",
mode => 0640,
source => [
"puppet:///squid/squidguard/config/squidguard.conf"
],
}
exec { "rebuild-squidguard-db":
command => "/usr/bin/squidGuard -C all",
subscribe => File["squidguard.conf"],
refreshonly => true,
}
Exec["reload-squid"] {
subscribe +> Exec["rebuild-squidguard-db"],
}
}
In this case, the squid -k parse would pass, and the squid init script would
exit successfully, so squid would never detect a problem. However, squid
would have problems functioning at run time (i.e., sending to the
redirector) if the squidguard.conf file was invalid, or if the db files were
built incorrectly. I could, of course, add this to squid's onlyif statement
as well, but it's not as self-contained. Dependencies on other puppet type
instances has great utility.
On a semi-related note, transactional support is mentioned briefly on
http://reductivelabs.com/trac/puppet/wiki/TypeReference . Does
transactional support aim to solve what I'm trying to do (i.e.,
automatically prevent bad configurations from entering and/or restore
previous configuration if something fails)?
Regards,
Casey
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