我可以在'puppet apply'运行时指定puppet的根执行目录吗？

Question

Suppose I'm working in AWS, and have an EBS volume attached to an instance. That volume is a copy of a root volume, insofar as it was created by snapshotting the root volume of another instance.

I'd like to run puppet against my EBS volume, but not hardcode its mounted path into my puppet manifests. Suppose it were mounted at /tmp/new-root-vol . Is there any way to run puppet apply against that path without specifying it in the manifest itself?

To put it another way, how could I get this manifest snippet to create /tmp/new-root-vol/testfile without knowing the /tmp/new-root-vol namespace until runtime?

file {'testfile':
  path    => '/testfile',
  content => 'Hello, volume'
}

One possibility might be chroot . This feature request suggests it might work, as long as the puppet executable were accessible from the new root.

Answer 1

I don't know of any way you can do that. However you can create a variable in your site.pp (or include another manifest like constants.pp) and use a variable:

site.pp

$root_dir = '/'
node default {
  include your_manifests
}

You file

file {'testfile':
  path    => "${root_dir}testfile",
  content => 'Hello, volume'
}

You could even change the root directory per node too.