Multiple template fallbacks

[Sam Morrison]

Hi,

In a file resource I want to be able to specify multiple template contents. If the 1st template doesn't exist use the 2nd listed and so on. Much like how the source attribute works.
Basically this:

  file { "/tmp/somefile.txt":
    ensure  => present,
    content => [
                       template("somefile-$fqdn.erb"),
                       template("somefile.erb"),
                       ]
    mode    => 644,
    owner   => root,
    group   => root,
}

Which doesn't work. Is there a way to do this in puppet?

Thanks,
Sam

[Nigel Kersten]

Unfortunately the template and file functions treat multiple values differently. File uses them for fallbacks, Template concats the .erb files together.

This is something we'd quite like to fix, and the solution is probably going to involve a separate concatenation function, but changing how template works is somewhat problematic for backwards compatibility. Perhaps an 'erb' function that behaves like 'template' is a better solution...

http://projects.puppetlabs.com/issues/5158

 

Thanks,
Sam

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[Wolf Noble]

Here's what I've been doing, fwiw:

file { 'nsswitch.conf':
path => '/etc/nsswitch.conf',
content => inline_template(
file(
"/etc/puppet/modules/dist/ldapclient/templates/etc/nsswitch.conf.$hostname.erb",
"/etc/puppet/modules/dist/ldapclient/templates/etc/nsswitch.conf.$deviceid.erb",
"/etc/puppet/modules/dist/ldapclient/templates/etc/nsswitch.conf.$clientid.erb",
"/etc/puppet/modules/dist/ldapclient/templates/etc/nsswitch.conf.erb")),
ensure => file,
owner => root, group => 0, mode => 0644;
}

not sure about the elegance or lack thereof, contained within, but it seems to work until there's a "better way"(™) to do it

W
On Sep 1, 2011, at 9:09 AM, Nigel Kersten wrote:

On Wed, Aug 31, 2011 at 10:48 PM, Sam Morrison <sorr...@gmail.com<mailto:sorr...@gmail.com>> wrote:
Hi,

In a file resource I want to be able to specify multiple template contents. If the 1st template doesn't exist use the 2nd listed and so on. Much like how the source attribute works.
Basically this:

file { "/tmp/somefile.txt":
ensure => present,
content => [
template("somefile-$fqdn.erb"),
template("somefile.erb"),
]
mode => 644,
owner => root,
group => root,
}

Which doesn't work. Is there a way to do this in puppet?

Unfortunately the template and file functions treat multiple values differently. File uses them for fallbacks, Template concats the .erb files together.

This is something we'd quite like to fix, and the solution is probably going to involve a separate concatenation function, but changing how template works is somewhat problematic for backwards compatibility. Perhaps an 'erb' function that behaves like 'template' is a better solution...

http://projects.puppetlabs.com/issues/5158

Thanks,
Sam

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Nigel Kersten
Product Manager, Puppet Labs

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<http://www.bit.ly/puppetconfsig>
Sept 22/23 Portland, Oregon, USA.

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[Sam Morrison]

Thanks Wolf,

This works perfectly.

Cheers,
Sam