puppet site.pp applying node definition config for nodes with same hostname prefix

Question

I have following server hostnames.

appserver-mgr1
appserver-mgr2
appserver-wkr1
appserver-wkr2

I want to apply a specific node configuration to all these servers.

How do I define a unique node definition in site.pp file for these set of servers using the appserver- prefix?

Currently I'm using default node definition.

node 'default' {
        include appserver
}

If a new set of servers come as,

esb1
esb2
elb1

how do I cope up with these changes and modify site.pp file accordingly?

Answer 1

Nodes can be declared using regular expressions.

node /^appserver-/ {
    include appserver
}