Changing a deeply-nested dict variable in an Ansible playbook

I recently had to build an Ansible playbook that takes in a massive inventory structure (read from a YAML file), modifies a specific key in that file, then dumps the file back to disk. There are some other ways that may be more efficient standalone (e.g. using a separate Python/PHP/Ruby/etc. script and a good YAML library), but since I had to do a number of other things in this Ansible playbook, I thought it would keep it simple if I could also modify the key inside the playbook.

I was scratching my head for a while, because while I knew that I could use the dict | combine() filter to merge two dicts together (this is a feature that was introduced in Ansible 2.0), I hadn't done so for a deeply-nested dict.

Meet Phergie, an efficient PHP IRC bot

The Drupal community uses IRC extensively for collaboration and community building. A permanent and ever-helpful fixture of the official #drupal-* IRC channels, and in the Drupal community itself, is the humble Druplicon bot. Druplicon is a Drupal-based IRC bot that was created in 2005, and is still going strong as part of the Bot module for Drupal.

Bots like Druplicon do a lot of nice things—they can remind people of things after they were away for a while, they can store facts, track karma, throw people virtual beers, store and retrieve helpful facts, and relay important information. For example, when a build fails in Jenkins, a bot can post a message in IRC. Similarly, if a server goes down, or is under heavy load, the bot could post a message.

Connect to IRC via Adium when connected through an LTE hotspot

When I'm on the go, I like to use my iPhone 5s as a hotspot, as I get 10-20 Mbps up and down (much better than any public WiFi I've used), and it's a more secure connection than a public, unsecured hotspot.

However, when I open Adium, I'm greeted with:

<br />
Notice -- You need to identify via SASL to use this server<br />

To fix this, I forward port 6667 on my Mac to one of my remote servers using SSH, then tell Adium to use that server's connection with my Mac as a SOCKS5 proxy. If you need to do this, you can do the following: