Best Practices/Ideas for mixing Windows and Linux

[Jared Annes]

I'm fairly new to puppet, and I've been tasked with building manifests to deploy software, mostly monitoring agents. Each agent has different versions, and each agent has different package for each OS. I'm trying to figure out which would be the best way to accomplish this from a design perspective. Right now, everything has it's own module (OS/Agent/Version). However, I'm not sure this is the best way and I'm looking for opinions from others.

Some ideas I've had (and I'm not sure some of this is even possible, let alone a good idea):

Module for each agent/OS, different versions contained in the module

i.e

Agent1_linux

Agent1_windows

Agent2_linux

Agent2_windows

(each module's init.pp has different version "classes" or something similar)

Modules for each agent version, OSes combined in the module

Agent1_v1

Agent1_v2

Agent2_v1

Agent2_v2

(each modules init.pp has different code for the different OSes)

Combining the two ideas, one module for each agent

Agent1

Agent2

(each modules init.pp has different code for OS and versions).

Ideas? Suggestions? Theories? Thanks for any/all input. Keep in mind I'm new to this product, so I might not be making absolute sense.

[Felix Frank]

Hi,

and welcome aboard! :)

In the rare case where Linux and Windows will have use for the same
modules (I can hardly think of any, barring perhaps nagios, but even
there I prefer NSCA on Windows vs. NRPE on Linux), I would still
hesitate before creating "two worlds".

Each module should be self contained and do its job. Use fact values to
make decisions and branch out of things that won't work on certain
platforms or are just generally different.

I suppose that for Windows, lots of things will be much different from
*NIX. Still, that would basically mean that certain (or most) classes in
the modules are wrappers of the form (untested example):

class my_feature {
case $operatingsystem {
'Windows': { include my_feature::windows }
... # other special cases?
default: { include my_feature::linux }
}
}

HTH,
Felix

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