Puppet users - Jan 2009 - Notifying a service when config file changes

Hello all.


I''m trying to get my servers (syslog clients) to forward
syslog-messages to
a central syslog server. I''m using the "line" resource type
to add the
necessary entry to /etc/syslog.conf file, and I need a way to notify the
syslog service to restart whenever the config file changes.

Currently, this is what I''ve done:


*service {syslog:
   ensure => running,
   subscribe => Line["rsyslogserver"]
}

line { "rsyslogserver":
    file => "/etc/syslog.conf",
    line => "*.*     @server1.example.com",
    ensure => present
    notify => Service[syslog]
}
*

I thought that the "notify" line would make sure that the syslog
service
would restart upon changes to the config file, but apparently it isn''t
so.
Anyone got any suggestions on how to implement this?

Regards,
Kenneth Holter

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On Fri, Jan 23, 2009 at 4:35 AM, Kenneth Holter <kenneho.ndu@gmail.com>
wrote:
> service {syslog:
>    ensure => running,
>    subscribe => Line["rsyslogserver"]
> }
>
> line { "rsyslogserver":
>     file => "/etc/syslog.conf",
>     line => "*.*     @server1.example.com",
>     ensure => present
>     notify => Service[syslog]
> }
>
> I thought that the "notify" line would make sure that the syslog
service
> would restart upon changes to the config file, but apparently it
isn''t so.
> Anyone got any suggestions on how to implement this?
Is "line" a define you''ve gotten from somewhere? I think the
community
is generally trying to use Augeas for this sort of thing. Myself I''d
just push out the file as a file resource.

--Paul

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Kenneth Holter wrote:
> I thought that the "notify" line would make sure that the syslog
service
> would restart upon changes to the config file, but apparently it
isn''t
> so. Anyone got any suggestions on how to implement this?
You should check the line definition, the notify parameter can be ignored.

In this case, you can refactor your line definition to "propagate" the
notify parameter. Something like :

  define line(..., notify => []) {
    ...
      exec {
        ...
        notify => $notify
      }
    ...
  }

Like Paul said, replacing line by augeas is a good way too :) But you
need a recent puppet release.

Regards,
-- 
Alban Peignier - alban.peignier@free.fr
http://people.tryphon.org/~alban

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