Homelab / K3s

Homelab / k3s

The goal is to build a fully working kubernetes cluster on my homelab hardware.

Hardware Options

Lepton Hardware Characteristics

OS	Model	CPU	RAM	Storage
Fedora Linux Server 37	Dell Precision T3600	16x Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz	DDR3 64Gb	512GB

Higgs Hardware Characteristics

Fedora Linux Server 37

OS	Model	CPU	RAM	Storage
Fedora Linux Server 39	LENOVO Thinkstation P920	96x Intel(R) Xeon(R) Platinum 8160 CPU @ 2.10GHz	DDR4 128Gb	8Tb /vm-spc

Higgs

Bare Metal VMs

Database

host	details	notes
db-m01.atomic.org	debian bookworm, postgresql, 8GB RAM 50 GB disc	Nov 1 2025 - installed VM
		Nov 2 2025 - configured db for local network access
		Nov 2 2025 - created railspguser with impossible password
		Nov 2 2025 - created cookbook database, tested - railspguser can access database from local network host
Example	Example	Example

Appserver

host	details	notes
app-m01.atomic.org	debian bookworm, postgresql, 8GB RAM 100 GB disc	Nov 2 2025 - installed VM
		Nov 2 2025 - setup ssh, sudo, bridged network, /etc/hosts app can see db
		Nov 2 2025 - installed mise: https://docs.vultr.com/how-to-install-ruby-on-rails-on-debian-12
		Nov 2 2025 - can now create rails apps such that fermion can see them on :3000
Example	Example	Example

Rails

` $ rails new cookbook --css=tailwind `

K3s

21JUN2025 Installed 5 centos stream 9 minimal install servers with same configs:

worker nodes

• hostname: k3s-wNN (i.e. k3s-w01, k3s-w02...)
• /vm-spc/k3s-w01 30 gig partition
• 8 gigs RAM
• bridged network interface
• minimal software install
• root password (dads job)
• user Jason Michael (dads job)

master nodes

• hostname: k3s-mNN
• /vm-spc/k3s-m01 40 gig partition
• 8 gigs RAM
• bridged network interface
• minimal software install
• root password (dads job)
• user Jason Michael (dads job)

all nodes

• updated dnf, installed python3-pip
• setup ssh keys such that passwordless ssh possible from masters to workers and from fermion to all possible

k3s

installed crio on all nodes (w and m) ran setup/crio/vers setup/crio/repos setup/crio/cmds on each