cloudflare, plex and terraform docs

principles/cloudflare/README.md

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+# Cloudflare
+
+I'm using Cloudflare for a few things so below I will go into detail into each service I'm using on Cloudflare.
+
+## DNS
+
+This is the most self-explanatory. My primary domain `pez.sh` is bought on Hover.com with the DNS servers set to those of Cloudflare.
+
+The various subdomains are managed via [Terraform](../terraform).
+
+## Pages
+
+Pages is a serverless offering that will automatically deploy and serve a website from a GitHub repository.
+
+I have it setup to listen to any commits on my [pez.sh](https://github.com/rwejlgaard/pez.sh) repository so it'll redeploy automatically.
+
+This is also managed via [Terraform](../terraform).
+
+## Tunnels & Zero Trust
+
+Another great offering from Cloudflare is `cloudflared`, a tunnelling solution that makes it very easy to share HTTP services and access them through subdomains on a cloudflare managed domain.
+
+How this works is by installing `cloudflared` onto each server and then set up "routes" that links subdomains with a port on the server. All my HTTP-enabled services are deployed this way.
+
+"What about authorization?" I hear you say! This leads me to the Zero Trust portion of this section.
+
+As part of Cloudflare Zero Trust, we have Cloudflare Access which provides an easy to setup authorization/login screen to services that are exposed via tunnels.
+
+Access allows me to have all my services behind single-sign-on, or I can choose to have it disabled if I want to expose a service to anyone.
+
+Of course this is also managed via [Terraform](../terraform).

principles/plex/README.md

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 # Plex
 
-\# TODO
+## History
+
+My Plex server is what started my homelab. I had two 3 TB drives laying around so I thought I should try out setting up a plex server.
+
+This was hosted on a single Proxmox server on the hardware that would later turn into `london-a`. I thought I was being smart about the way I had it set up, using seperate VMs for each function of the setup with a VM serving the central storage over NFS.
+
+I hadn't thought about the limitations of NFS when I set it up and I would often find that if I was downloading media while streaming I would reach the limits of NFS I/O.
+
+Once I got hold of 3 new hard drives of 8 TBs (24 TB striped capacity). I bit the bullet and installed the OS on the bare metal which leads us to the current setup.
+
+## Current Setup
+
+My current plex setup is running on my `london-b` server. The server is rediculously overpowered as a media server, it's equipped with a Threadripper CPU and an Nvidia GTX 980.
+
+The GPU helps a bit with transcoding while streaming but the CPU can easily transcode plenty fast by itself.
+
+The storage is directly attached to the motherboard and my three 8 TB drives are striped to maximize the usable storage. I don't really care if I loose a disk, since it's only movies and TV shows anyway. Although, it would suck having to re-download everything.
+
+I use the so-called "*arr" stack. Radarr, Sonarr & Prowlarr for movies, TV shows and trackers respectively.
+
+For my download client I first went with Deluge which I **not** like. It was slow and sluggish, constantly corrupting downloads and not cleaning up after itself.
+
+So I'm now using Transmission, which is brilliant. It's so good I'm able to have 100 active torrents at once!
+
+## Future upgrades
+
+I'm planning a rather large purchase to expand my raid array with 21 additional disks which would bring my total capacity to 192 TB (this will not be striped).

principles/terraform/README.md

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+# Terraform
+
+## Why
+
+Terraform is ubiquitous in todays infrastructure engineering. The ability to maintain a single source of truth for infrastructure is a crucial part of maintaining stability and "known good" configurations.
+
+It was without even thinking about it that I chose to use Terraform for my infrastructure configuration.
+
+I was working on setting up a few things on Cloudflare and before I knew it I had the repository [pez-terraform](https://github.com/rwejlgaard/pez-terraform) created.
+
+## How
+
+The repository is not very complicated. I have two things I use Terraform for right now - Cloudflare and Azure.
+
+I made the choice not to use modules and instead opted for just having all .tf files in the root with the service prefixed (e.g "cloudflare_dns.tf").