Exit Puppet when a custom Hiera backend is not found

[Vaidik Kapoor]

Hi Guys,

I am using masterless Puppet. And My situation is that I am using a custom Hiera backend called hiera-regex. The process of using it is that you have to have hiera-regex installed on your target machine.

If sometime for some reason, hiera-regex is not installed, hiera still looks up for the key in hierarchy and starts using that key which it was not suppose to use in the presence of hiera-regex. Ideally, I would want Puppet to exit when it does not find hiera-regex backend installed. But as of now, Puppet only prints a notice() which can be easily missed and can leave your node in an unwanted state.

Is it possible to somehow configure Puppet/hiera for masterless setup to not continue at all if hiera is configured to use a custom backend and that backend is not installed?

Here is my hiera.yaml file:

---
:backends:
    - regex  # this is the custom backend (hiera-regex)
    - yaml

:regex:
    :datadir: /etc/puppet/hiera

:yaml:
    :datadir: /etc/puppet/hiera

:hierarchy:
    - "%{fqdn}"
    - base

Expecting some help on this. I have posted the same question on stackoverflow as well: http://stackoverflow.com/questions/26133604/exit-puppet-when-hiera-backend-is-not-found

Thanks,
Vaidik Kapoor
vaidikkapoor.info

[Nan Liu]

Perform a data lookup for a non relevant key that only exists in the hiera-regex backend or fail the catalog.

if !hiera('hiera::regex') { fail('hiera-regex backend does not appear to be loaded') }

Nan

[Vaidik Kapoor]

Thanks for the suggestion. Looking for a non-existent key sounds like a decent work around for now. Thanks a lot for the help! :)

Vaidik Kapoor
vaidikkapoor.info

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