I am moving from Puppet 0.25 to Puppet 4. In doing so I am re-writing a
lot of the modules to work better than what I inherited.
So my current issue I am trying to figure out is how to update PAM
variables based on what external 3rd party authentication package we have
installed on that server. The old method that had been employed was to use
an exec to push a file with the correct settings. I am trying to do it via
a template.
The problem I am having is that I need to check if the PAM module is
installed before making the changes and revert them if it is removed. I
know I can write a custom fact, but on the 0.25 version a custom fact
required both puppet.conf edits and a bounce of the agent. I haven't tried
on the later versions, but I remain gun shy,
Ideally I would run an execute to check the module and only do the changes
if the PAM module is in place. I haven't figured out how to do that yet
with templates.
Has anyone else figured out the least invasive way to do this. Aka no
custom facts?
Do I need to just knuckle down and learn enough Ruby to have it determine
if the package is set and use one variable, if not the other?
I am still new to Puppet coding in Puppet 4, well in general too, when
getting into the weeds like this. I would assume there is a simple think
like below. (Notes this is probably not correct puppet code, just a
pseudocode example)
if ( ! exec { check_package:
path => "/usr/bin:/bin:/sbin:/usr/sbin",
command => "rpm -q <package>",
} ) {
$extra_lines = [
'blah blak',
'blah',
]
}
Think is I just don't have enough skill yet to make it work on my own yet,
so I am reaching out to see if someone already figured this out as I keep
hammering on it.
Thanks!
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