Puppet: Mastering Infrastructure Automation

Sample architectures

We have outlined the main tasks and components we can use to put things together in a Puppet architecture; we have given a look at Foreman, Hiera, and at the roles and profiles pattern; now let's see some real examples based on them.

The default approach

By default, Puppet doesn't use an ENC and lets us classify nodes directly in /etc/puppet/manifests/site.pp (or in files imported from there) with the node statement. So a very basic setup would have site.pp with content like the following:

node www01 {
  # Place here resources to apply to this node in Puppet DSL:
  # file, package service, mount...
}
node lb01 {
  # Resources for this node: file, package service...
}

This is all we need: no modules with their classes, no Hiera, no ENC; ...