On 06/23/2011 11:52 AM, flex wrote:
> But i think class is singletons, means when using class you can not get
> more than one copy of the resource, that's the biggest difference
> between class and define.
>
> Your example give a duplicate definition error in my environment.
>
> So is this my fault or there another way?
You are right. Using class does not work here. But you can use a define
with parameters and call the define with parameters later on:
define application::add ($appname) {
file { "/var/$appname":
ensure => directory,
}
}
node 'node1' {
application::add { app1: appname => app1 }
application::add { app3: appname => app3 }
}
node 'node2' {
application::add { app2: appname => app2 }
application::add { anyname: appname => app4 }
}
When calling the define you just have to make sure that the give name is
uniq.
>
> 2011/6/23 Martin Alfke <[email protected] <mailto:[email protected]>>
>
>
>
> On Jun 23, 7:44 am, Martin Alfke <[email protected]
> <mailto:[email protected]>> wrote:
> > On 06/23/2011 04:35 AM, flex wrote:
> >
> > > These is another question, i have many defines which will apply an
> > > application to sepcified path, called as:
> >
> > > application::add { "app1": path => "/var/app1" }
> >
> > > by this i can apply app1 and app2 in node1, app3 and app4 in
> node2, etc.
> >
> > > now, how do i switch this to a class? Need i create a seperate
> class for
> > > all the apps although the only difference is the path?
> >
> > You can make use of parameterized classes:
> >
> > class application::add($appname) {
> > path => '/var/${appname}',
> > ...
> >
> > }
> >
> > Within your node definition you call the class with desired parameter:
> >
> > node 'node1' {
> > class application::add { appname => 'app1' }
> > class application::add { appname => 'app3' }
> >
> > }
>
> The mentioned usage of parameterized classes in node definition is
> wrong.
> See:
>
> http://docs.puppetlabs.com/guides/language_guide.html#parameterised-classes
>
> node 'node1' {
> class { 'application::app': appname => 'app1' }
> class { 'application::add': appname => 'app3' }
> }
>
> >
> > Kind regards,
> >
> > Martin
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > > 2011/6/21 Chris Phillips <[email protected]
> <mailto:[email protected]> <mailto:[email protected]
> <mailto:[email protected]>>>
> >
> > > I would see a principle whereby nodes should not ever be defined
> > > within the manifest code at all. To me the manifests should be
> > > written to be very generic, and then use ENC's to modify their
> > > behaviour at a "user" level. There is still a lot of
> inconsistency
> > > within Puppet as to how device specific data can be obtained
> > > (extlookup is very useful but rides roughshod over other
> > > architectural principles) but I try to stick to keeping all
> > > manifests generic. I write manifests to manage a package, then
> > > create a group in dashboard to relate that function to a
> business
> > > need and then a node into that group.
> >
> > > On 21 June 2011 14:48, Martin Willemsma
> <[email protected] <mailto:[email protected]>
> > > <mailto:[email protected] <mailto:[email protected]>>>
> wrote:
> >
> > > We use /etc/puppet/node-definitions/*.pp in site.pp
> similar to
> > > what Carles is saying.
> >
> > > [node-definitions] is a git repo thats being synced on both
> > > puppermasters. This happens on every push to origin
> >
> > > We use the 'default' node which does the baseline
> configuration
> > > based on a 'role'
> >
> > > In a separate file $fqdn.pp I place the definitions for
> a node.
> >
> > > Are there more people using this kind of approach?
> >
> > > ---
> > > Martin
> >
> > > 2011/6/21 Carles Amig� <[email protected]
> <mailto:[email protected]>
> > > <mailto:[email protected]
> <mailto:[email protected]>>>
> >
> > > We had the same problem and we just separated each
> node (or
> > > group of nodes) in one file and then we load them
> using the
> > > following syntax:
> >
> > > import "nodes/*.pp"
> >
> > > You could also organize those files in
> subdirectories if you
> > > like so:
> >
> > > import "nodes/*/*.pp"
> >
> > > The only problem we've found with this approach is when
> > > creating new files, puppetmaster takes a while to
> "see" them.
> >
> > > El 20/06/2011 5:25, flex escribi�:
> >
> > > We have many modules and many nodes, every node
> may use
> > > different
> > > module, so it's very unpleasant to modify the
> nodes.pp
> > > Then i saw the external node, but seems it only
> support
> > > class and we
> > > have many defines called in node.pp
> >
> > > So here is my question: Is there another way for
> us to
> > > manage so many
> > > nodes easily or should i change all the defines to
> > > classes and using
> > > external nodes?
> >
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