On Tuesday, March 31, 2015 at 10:31:14 AM UTC-5, Dhaval wrote: > > Thanks, I have seen some of those, if someone can brief me when to use > what appreciate that .. > > Hiera is a framework for maintaing machine- and site-specific data outside your Puppet manifests, and for serving it to the catalog builder at need. It is the mechanism underlying Puppet's "automatic data binding" feature for choosing values for class parameters, but it can also be used directly in your manifests via various Puppet functions.
"ENV" is not meaningful as a Puppet concept, but perhaps you meant "external node classifier" (ENC). An ENC is, yes, a mechanism for assigning classes (and data) to nodes. Use of an ENC is optional. It can work instead of a site manifest, but more usually is used alongside a site manifest. Almost everything you can do via an ENC, you can do via Hiera, too. If you are not using one of the products that provides a Puppet ENC (The Foreman or Puppet Enterprise, for example), then I would forget about ENCs for the moment and focus on Hiera. "Roles and Profiles" is a popular pattern for your site configuration. In that pattern, "roles" correspond to high-level operational roles that a machine may have, such as "Web Server" or "Development Workstation", whereas profiles model the low-level details of how to manage a particular subsystem or role for a particular type of machine. Roles and Profiles are both modeled as Puppet classes, with role classes doing nothing but including the appropriate profile classes. Nodes are then classified with one (or perhaps more) role classes. None of this is directly related to HIera or ENCs, but they can work together. John -- You received this message because you are subscribed to the Google Groups "Puppet Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/puppet-users/4ba86510-d5d2-4909-b98d-36a8bd1d963f%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
