My Homelab

This projects contains the configuration of my home lab setup. It is a collection of docker compose files which configures all the applications

The docker workload is run on my Lenovo Windows Laptop

Design

Setup

Create a docker network. This will be used for all containers running in the docker host related to homelab.
```
docker network create homelab-network
```
Create a volume for portainer so that the data is persistent across compose up's and down's.
```
docker volume create portainer-data
```

Gateway

This is the gateway to the homelab, which is exposed to the internet.

It used Cloudflare Tunnel to establish a reverse tunnel to the cloudflare's network.

Set the following environment variables in the .env file

CLOUDFLARE_TUNNEL_TOKEN=<token>

Then start the gateway using the following command

docker compose -f compose.gateway.yaml up -d

Traefik - Reverse Proxy

Traefik is the reverse proxt to homelab, to manage routing, SSL, and other configurations for HTTP trafic management within the Docker instance.

Keycloak - Identity Provider

Create a self-signed cert openssl req -newkey rsa:4096 -nodes -keyout ./keycloak/secrets/key.pem -x509 -days 365 -out ./keycloak/secrets/certificate.pem
Create volume for postgres docker volume create homelab-postgres-data

Portainer

https://homelab.kopparam.com/portainer

Portainer is a nice UI to manage the Docker Desktop instance.

Softserve - Git Server

A minimal and beautiful SSH based application to host git repositories.

Kupi

3 node Kubernetes cluster on RaspberryPis

SOPS

Add this to the rc file

# SOPS + AGE
export SOPS_AGE_KEY_FILE=$HOME/.sops/key.txt
export HELM_SECRETS_BACKEND=sops

Add the private key to the .sops/key.txt

Add secrets using sops

sops -e plainsecrets.yaml

Grafana

Configure Application Instrumentation After the Helm chart is deployed, you will need to configure your application instrumentation to send telemetry data to Grafana Alloy using one of these addresses:

OTLP/gRPC endpoint: http://grafana-k8s-monitoring-grafana-agent.lgtm.svc.cluster.local:4317

OTLP/HTTP endpoint: http://grafana-k8s-monitoring-grafana-agent.lgtm.svc.cluster.local:4318

Zipkin endpoint: grafana-k8s-monitoring-grafana-agent.lgtm.svc.cluster.local:9411

Rook + Ceph: Cloud Native Storage

This creates a Cepf Object and FileSystem Storageclasses in Kubernetes using Rook. Block devices are explicitly disabled as the required modules are not included in the kernel od RaspberryPi OS.

It uses a single replica for all the object pools as I plan to use this for CloudnativePG, which has replication built in. This is the reason this POC needs a single thumb drive and a single partition on it.

Hardware Setup

1 x 64 GB USB 3 thumb drive inserted in rpi5-02's blue USB ports

Prerequisite setup

Caution: These steps destroy all data on the drive, execute by making sure the device being wiped with step 1

Note the device name, for me it was /dev/sda sudo fdisk -l
Clear the drive, by zero'ing out first 100MB of the drive sudo dd if=/dev/zero of=/dev/sda bs=1M count=100 oflag=direct,dsync
Create a single empty partition on the drive, this is because ceph does not like removable drives and a bug which thinks the drive is less than 5 GB
1. sudo fdisk /dev/sda
2. g # Create a new partition table
3. n # Create a new partition
4. Press enter for partition number, start and end sectors
5. w # Save and exit
sudo partprobe /dev/sda

Add label to the node that has the drive

Run ansible/rook-ceph.yaml

Run the rook helmfile

helmfile apply --skip-diff-on-install

kopparam / homelab