I have a custom puppet type called iptables. Not surprisingly it is used to build iptables rules.
Recently I was setting up a router which required MASQUERADING a few virtual network interfaces. I found that the module was lacking the ability to negate a match. For example I wanted a rule:
-A FORWARD ! -s 192.168.1.0/24 -i vnet -j DROP
It seemed like a simple task to add in the ability to insert the !. After all it is mostly just string manipulation.
My puppet setup already has pluginsync enabled and working so I though deploying my changes would be easy too.
I managed to make my changes (even though ruby is quite a foreign language to me). When I ran puppet I could see the changes being pulled down to the client but alas, it did not work correctly.
I checked with several web pages which try to explain how easy it is to add new properties and everything I was doing was correct.
After wasting hours tinkering in the ruby code I had the idea to restart the puppet master and bang, it started working.
Seems so obvious in hindsight.
We should read these messages more often Miranda
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Encountering iptables and Puppet can feel like navigating a tricky slope in Snow Rider 3D. I had a similar experience extending my iptables Puppet module to negate matches. Modifying the Ruby code for my custom puppet type seemed straightforward, but the changes weren't taking effect. After hours of debugging, a simple Puppet master restart solved the issue.
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