How to Tier a Puppet Setup

asked 2013-07-02 10:59:54 -0600

igalic
81 ●1 ●3 ●5

I'm trying to work out a method for building our infrastructure in a way that lends itself to easily scale it out as well as having a complete overview, an easily accessible documentation.

Right now my idea looks like follows:

at the lowest level, we have the classic puppet module. This takes care of actually implementing a task: installing packages, modifying configurations (example: apache, ntp).
The next level is a wrapper. For instance a "mydb", or "lb" - which abstracts away differences between mysql and postgres, (or haproxy and trafficserver respectively). It also collects exported resources (handing them down the ...

(more)

answered 2013-07-02 12:34:35 -0600

Ancillas

2828 ●19 ●39 ●71 http://www.techgamelif...

updated 2013-07-03 10:58:52 -0600

Here's how I break it down. I don't use an ENC; I do all of my node classification within site.pp.

site.pp

Contains node definitions. In my design, a node gets exactly 1 role class assigned. We have a naming standard for our servers, so my node definitions use regex statements to classify the nodes.

I've never used an ENC, but if I were going to, I would assign a role to a node in the ENC, and then structure my hiera data so that configs would drive off of one of the three pieces of ... (more)

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That's a great answer, thanks! Follow-up questions, if you don't mind: 1) Do you use r10k to manage your module trees? 2) Do you completely avoid inter-module dependencies ...(more)

daff ( 2013-07-09 07:55:35 -0600 )edit

I do use r10k to manage my environments. My modules are each in their own git repo, and then I use the Puppetfile approach with r10k to define environments. I ...(more)

Ancillas ( 2013-07-09 11:19:28 -0600 )edit

I do my very best to avoid inter-module dependencies, expect when I'm using a defined type like with the concat module. As with all things, there are appropriate places ...(more)

Ancillas ( 2013-07-09 11:20:24 -0600 )edit

In the case of, say, a puppet master, I'd have a puppet master module that can manage a puppet master, and then I'd create a puppetmaster role that ...(more)

Ancillas ( 2013-07-09 11:23:53 -0600 )edit

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