On Friday, October 26, 2012 11:32:36 AM UTC-5, erkules wrote: > > > Moin, > playing with puppet. I did some defined type creating > lxc-application-containers. > With that I could run a lot of virtualised applications on a host. > I choose defined types to call them many times for a node. > In my understanding classes will not be able to be called many times on a > node. > ('name-clashing'). >
That's sort-of true, but it misses the key point. Classes represent configurations features with singleton nature -- if managed at all then they are either present/on or absent/off. Thus, although there are ways to declare the same class more than once, but they do not permit you to use different sets of parameters, and they have no additional implications for the target node's configuration beyond what declaring that class once would have. In any case, supposing that you want to be able to declare containers for multiple different applications on the same node, you cannot model them all via a single class (though you can model a particular collection of them with a class). > > Trying to get my configuration into an enc. I looks like you can't use > defined types via enc. > > So I wonder if Im wrong? > You are correct that an ENC cannot declare instances of a defined type, nor of any other resource type for that matter. It can declare only classes and global variables. > If not is there a trick to call a class many times for a node. (Maybe by > manipulating the name?) > > You can create classes with different names but similar content, or you can use one class that wraps all the resources you want. For example, class mymodule::lxc_application_containers { mymodule::lxc_application_container { 'container1: application => 'Awesomeness1.1' # other parameters } mymodule::lxc_application_container { 'container2: application => 'Moneymaker3.2' # other parameters } # other containers ... } Supposing that the point is to select a subset of the available applications for each target node, using the one-class approach, you can do that via global variables (yuck), class parameters (meh), or data from an external source (best bet). On the other hand, don't discard the idea of different classes too lightly. In many cases it makes a lot of sense. In particular, it may relieve pressure on your defined type to be sufficiently flexible to do everything needed for any application you might ever want to use. Having a separate class for each module could make it a lot easier to deal with the special needs of each application. Note also that names in Puppet should not contain the hyphen (-). It may happen to work in some versions of Puppet, but it is not supported, and some uses definitely will fail in various Puppet versions. This applies most to variable names, including parameter names, but also to class, module, and definition names. John -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To view this discussion on the web visit https://groups.google.com/d/msg/puppet-users/-/sGIe97g0JsEJ. To post to this group, send email to puppet-users@googlegroups.com. To unsubscribe from this group, send email to puppet-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/puppet-users?hl=en.