On Thu, Apr 05, 2012 at 07:14:10PM +0000, Nan Liu wrote:
> On Thu, Apr 5, 2012 at 7:06 PM, vicki <vickiko...@gmail.com> wrote:
> > Hi,
> > 1) I added this test function tom my
> > /etc/puppet/modules/write_line_to_file/lib/puppet/parser/functions/write_line_to_file.rb
> > :
> >
> > module Puppet::Parser::Functions newfunction(:write_line_to_file) do |args|
> > filename = args[0]
> > str = args[1]
> > File.open(args[0], 'a') {|fd| fd.puts str }
> > end
> > end
> >
> > 2) I invoked it in the
> > /etc/puppet/modules/write_line_to_file/manifest/init.pp like this:
> >
> > class write_line_to_file{
> > write_line_to_file('/tmp/some_file', "Hello world!")
> > }
> >
> > 3) And I also included this module into my /etc/puppet/manifests/nodes.pp
> > under the correct node:
> > node default {}
> > node 'testnode.domain.com'
> > {
> > include hosts
> > include uninstall_screen
> > include write_line_to_file
> > }
> >
> > The function does execute, but on the puppetmaster - not on the remote node.
> > Other two functions execute on the correct node. What am I missing?
>
> Functions run on puppet master, facts and resource provider run on
> puppet agent. Writing functions won't allow you to change puppet agent
> files (unless you clone module and run puppet apply). If you are
> trying to write line to a file either use augeas type or puppet
> file_line from stdlib:
>
> http://forge.puppetlabs.com/puppetlabs/stdlib
For more complicated things than a single line in a file (like RedHat-
style network configs), I've had success with using a template to emit
YAML and then having a puppetized script on the node execute to
complete the configuration. It's a half-decent way of puppetizing an
arbitrary number of files at once.
> HTH,
>
> Nan
>
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