Grouping nodes in puppet
Solution 1:
There's two ways:
1) Multiple node names in one line:
node 'puppet-client1', 'puppet-client2' {
include testmodule
}
2) Nodes can be defined with regexes, e.g.:
node /^puppet-client[0-9]+/{
include testmodule
}
but that depends on a suitable host naming scheme.
You can see the official documentation for node definitions.