----- Original Message -----
> From: "Sébastien Lavoie" <sebast...@lavoie.sl>
> To: puppet-users@googlegroups.com
> Sent: Friday, September 7, 2012 11:32:55 PM
> Subject: [Puppet Users] How can I ensure that a service is started/stopped
> based on if it is needed or not ?
>
> I have a several services that I use only for some sites and I would
> like to make sure it is started when a site that uses is activated
> and stopped when it is not needed anymore.
>
>
> Examples: memcache, elasticsearch, rabbitmq, etc.
>
>
> I can easily make a service virtual and realize it before making a
> reference to it like this:
>
>
> class webserver {
> @service {"memcache":
> ensure => running,
> }
> }
>
>
> class sites {
> Realize['memcache']
> site {"example.com":
> require => Service['memcache']
> }
> }
>
>
> But this will not stop the service if it is never realized.
dont know if this helps but lets say you have a common class
you install on all nodes:
class common {
include memcache
}
class memcache {
service{"memcache": ensure => stopped, enable => false}
}
at this point if you include common on all machines memcache will
be stopped and disabled everywhere
now you make a class specifically to include on nodes that needs
it running.
class memcache::enable inherits memcache {
Service["memcache"] { ensure => running, enable => true }
}
if you include this class on a node it will be enabled, soon
as you remove the class it will be disabled again
Generally though this is a bad idea because you also have to
consider configs, packages and all this stuff it might make
sense in your case but I think the correct thing to do is just
not to install stuff on machines that you dont need.
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