Largely practical today, so less theory notes etc than previous days. External Facts ./modules/${module}/facts.d/ You can download additional facts to be collected during a puppet run. This directory resides on the puppet master /lib/facter/*.rb - Custom facts - to be deployed to each of the…
Notify - puppet debugging The notify statement can be used in module definitions to print & log useful debugging information. For instance, if large trees of logic are being traversed, insertion of a notify statement will allow you to determine whether the class is being declared or not. notify { '…
Simple example of replacement of a password field in /etc/shadow. usern=robbie encpass= :$1$CQoPk7Zh$370xDLmeGD9m4aF/ciIlC sed -i "s/^${usern}\:[^\:]\{1,100\}\:/${usern}\:${encpass}\:/" /etc/shadow Probably some more improvements here (e.g. determine maximum hashed password string length rather than "up to 100"…
Below are some useful notes from the course. Note these notes apply primarily to puppet enterprise, the standalone puppet version may not include all these features and/or may contain different syntax. Also, the writing style applies more to note-taking rather than externally useful tech-tips. Puppet Stack * Puppet Master * Puppet…
I recently needed to add a PXE environment to an existing PXE service. At a high level, the existing PXE service (running on MS Windows WDS with iPXE) needed to remain in place, but the new PXE service needed to integrate with Cobbler on CentOS 7. As cobbler modifies the…