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ever-changing homelab setup

License: The Unlicense

Jinja 100.00%

homelab

magpie's Introduction

magpie

magpie is a ~~simple~~ homelab setup.

Hostname	Host	OS	Storage
pica	Raspberry Pi 4	Raspberry Pi OS (Bullseye)	64GB microSD
cissa	ROCK 4 A+	Armbian 22.08 (Bullseye)	32GB eMMC
cyanopica	ROCK 4 A+	Armbian 22.08 (Bullseye)	32GB eMMC
urocissa	ROCK 4 A+	Armbian 22.08 (Bullseye)	32GB eMMC + 1TB SATA 2.5″ SSD

Setup

I defer most of the homelab base system setup to a couple Ansible playbooks.

However, getting the boards to a minimal working state still requires some manual steps: downloading OS images, flashing microSD cards, creating required the files for remote access on RPi OS, and writing the image to the on-board eMMC on the ROCK 4s.

After that minimal working state is achieved, it's as simple as:

Create an SSH key-pair, ssh-keygen -t ed25519 -f ~/.ssh/magpie_ed25519
Run ansible-playbook bootstrap.yaml -t first-run
Run ansible-playbook k3s.yaml

Writing the image to the on-board eMMC (ROCK 4 A+)

Use armbian-install and pick 'Boot from eMMC - system on eMMC'.

If that doesn't work, follow the directions in Radxa's wiki:

wget $ARMBIAN_IMG_URL
xzcat $ARMBIAN_IMG | dd of=/dev/mmcblk1 bs=1M

Other notes

The ROCK Pi 23 PoE HAT has a PWM controllable fan "supported" by Radxa. It's not straighforward to set it up using Armbian, so I didn't. Here's a related thread on the Armbian forums that should be a decent starting point.

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magpie's Issues

Setup hadolint CI pipeline

GitHub Actions fun!

Fix docker-nfs using patch

Pihole container not resolving

I was having trouble accessing pihole.magpie.local and for the longest time assumed it was a messy traefik config.

Turns out it was due to to some config remnants of having DHCP enabled in a previous deployment of pihole.

References:

Add an IRC bouncer

Probably use ZNC.

References:

Use hadolint to vet handmade images

Armbian / Raspberry Pi OS base layer

It would be preferable to have an uniform OS layer, but it seems Armbian doesn't reliabily boot on the Raspberry Pi.
The ROCK 4 A+ boards go with Armbian and the Raspberry Pi uses the stock Raspberry Pi OS Lite image.
Using Debian Bullseye flavor for both.

Some notes on the stock images:

Random number generation: Armbian uses haveged, RPi OS uses rng-tools-debian
NTP / SNTP: Armbian uses chrony, RPi OS uses systemd-timesyncd
RPi OS has a number of unrequired services running by default: avahi-daemon, triggerhappy, hciuart, ... I'm not touching these for now.

Drop nfs-server

Not using it at all. Using rsync seems much better for any type of file handling I'm doing at the moment.

If I decide to attach an external drive to the Pi in the future (and expunge my devices of all the media they currently carry), I might revisit this.
Even then, setting up a SAMBA share might be a better alternative...

Use USER and HOME environment variables

Clean up hard-coded paths, dummy.

https://docs.docker.com/compose/environment-variables/

Use traefik routing middlewares instead of lighttpd config

Inspired by the config in this question.

Use Ansible

Ideally, Ansible would be the single configuration management tool I'd use.
However, it seems it only supports docker-compose < 2.0.0 and I must be using some functionality that violates this requirement...

Still, I can definitely automate the Pi's initial setup using Ansible so maybe I'll give that a try.

References:

https://docs.ansible.com/ansible/latest/collections/community/docker/docker_compose_module.html

Pin image versions

Or else something might break in the future.

Use klutchell/unbound instead of mvance/unbound-rpi

Seems much simpler to configure https://gitlab.com/klutchell/unbound.

Minimal proper documentation

Each stack should have a proper README with a section dedicated to each of its services:

Would probably be a good idea too to mention required networks, volumes, etc.

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