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Restructure repo, replace IPs with placeholders, update positioning
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# Ced's K3s Cluster Setup – End-to-End
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This document describes how your current K3s cluster is built so you can re‑create it later or explain it in GitHub/OneNote.
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Note: All IP addresses and subnet ranges in this document have been replaced with placeholders for security. Substitute your own values where you see <placeholder> before running any commands.
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---
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## 1. Base Networking
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**HomeLab VLAN:** `10.10.30.0/24`
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**HomeLab VLAN:** `<homelab-vlan-subnet>`
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**Gateway:** UniFi Dream Router
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**DHCP:** Configured to *exclude* `.251–.254` so MetalLB can safely use that range.
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**DHCP:** Configured to exclude the upper range so MetalLB can safely use that range.
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- Proxmox VE: `10.10.30.250`
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- MetalLB pool: `10.10.30.251–10.10.30.254`
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- Proxmox VE: `<proxmox-host-ip>`
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- MetalLB pool: `<metallb-pool-range>`
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Subnets you have overall (for reference):
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- Default: `10.10.1.0/24` (not used)
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- Main: `10.10.10.0/24`
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- IoT: `10.10.20.0/24`
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- HomeLab: `10.10.30.0/24`
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- Guest: `10.10.99.0/24`
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- Default: `<default-subnet>` (not used)
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- Main: `<main-vlan-subnet>`
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- IoT: `<iot-vlan-subnet>`
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- HomeLab: `<homelab-vlan-subnet>`
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- Guest: `<guest-vlan-subnet>`
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---
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@@ -27,9 +27,9 @@ Subnets you have overall (for reference):
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### Nodes
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- `k3s-django-1` – `10.10.30.72` (control-plane, etcd, master)
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- `k3s-django-2` – `10.10.30.245` (control-plane, etcd, master)
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- `k3s-django-3` – `10.10.30.128` (control-plane, etcd, master)
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- `k3s-django-1` – `<control-plane-ip-1>` (control-plane, etcd, master)
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- `k3s-django-2` – `<control-plane-ip-2>` (control-plane, etcd, master)
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- `k3s-django-3` – `<control-plane-ip-3>` (control-plane, etcd, master)
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All three are Debian 12 (Bookworm, ARM64 on Raspberry Pi).
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@@ -56,7 +56,7 @@ sudo chown $(id -u):$(id -g) ~/.kube/config
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Update the kubeconfig to point to the node's real IP instead of `127.0.0.1`:
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```bash
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sed -i 's/https:\/\/127.0.0.1:6443/https:\/\/10.10.30.72:6443/' ~/.kube/config
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sed -i 's/https:\/\/127.0.0.1:6443/https:\/\/<control-plane-ip-1>:6443/' ~/.kube/config
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export KUBECONFIG=$HOME/.kube/config
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```
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@@ -80,10 +80,13 @@ echo "$TOKEN"
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On `k3s-django-2` and `k3s-django-3`:
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```bash
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export K3S_URL="https://10.10.30.72:6443"
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export K3S_URL="https://<control-plane-ip-1>:6443"
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export K3S_TOKEN="<PASTE TOKEN FROM k3s-django-1>"
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curl -sfL https://get.k3s.io | K3S_URL=$K3S_URL K3S_TOKEN=$K3S_TOKEN sh -s - server
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curl -sfL https://get.k3s.io | \
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K3S_URL=$K3S_URL \
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K3S_TOKEN=$K3S_TOKEN \
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sh -s - server
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```
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Verify from `k3s-django-1`:
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@@ -101,7 +104,7 @@ You should now see all three `k3s-django-*` nodes as control-plane,etcd,master.
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You have 9 worker nodes grouped as:
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- Ingress: `k3s-node-1`, `k3s-node-2`, `k3s-node-3`
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- Data: `k3s-node-4`, `k3s-node-5`, `k3s-node-6`
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- Data: `k3s-node-4`, `k3s-node-5`, `k3s-node-6`
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- Monitoring: `k3s-node-7`, `k3s-node-8`, `k3s-node-9`
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### 3.1 Join workers as agents
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@@ -109,10 +112,13 @@ You have 9 worker nodes grouped as:
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On each worker node (`k3s-node-N`), use:
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```bash
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export K3S_URL="https://10.10.30.72:6443"
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export K3S_URL="https://<control-plane-ip-1>:6443"
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export K3S_TOKEN="<same token from k3s-django-1>"
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curl -sfL https://get.k3s.io | K3S_URL=$K3S_URL K3S_TOKEN=$K3S_TOKEN sh -s - agent
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curl -sfL https://get.k3s.io | \
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K3S_URL=$K3S_URL \
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K3S_TOKEN=$K3S_TOKEN \
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sh -s - agent
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```
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Confirm from `k3s-django-1`:
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@@ -176,7 +182,7 @@ metadata:
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namespace: metallb-system
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spec:
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addresses:
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- 10.10.30.251-10.10.30.254
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- <metallb-pool-range>
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```
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and `manifests/metallb/l2advertisement.yaml`:
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@@ -224,7 +230,11 @@ helm repo update
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Install ingress-nginx targeting the ingress node group:
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```bash
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helm install ingress-nginx ingress-nginx/ingress-nginx --namespace ingress-nginx --create-namespace --set controller.service.type=LoadBalancer --set controller.nodeSelector.ingress-node="true"
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helm install ingress-nginx ingress-nginx/ingress-nginx \
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--namespace ingress-nginx \
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--create-namespace \
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--set controller.service.type=LoadBalancer \
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--set controller.nodeSelector.ingress-node="true"
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```
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Check:
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@@ -234,7 +244,7 @@ kubectl get pods -n ingress-nginx
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kubectl get svc -n ingress-nginx ingress-nginx-controller
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```
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You should see `EXTERNAL-IP` assigned from MetalLB, e.g. `10.10.30.251`.
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You should see `EXTERNAL-IP` assigned from MetalLB, e.g. `<metallb-vip>`.
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---
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@@ -255,12 +265,12 @@ kubectl apply -f manifests/demo-app/demo-nginx.yaml
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Update your desktop hosts file:
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```text
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10.10.30.251 demo.local
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<metallb-vip> demo.local
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```
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Open `http://demo.local` in a browser and you should see the nginx welcome page, served via:
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Desktop → MetalLB VIP (10.10.30.251) → ingress-nginx → demo-nginx Service → Pods.
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Desktop → MetalLB VIP (`<metallb-vip>`) → ingress-nginx → demo-nginx Service → Pods.
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---
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@@ -282,7 +292,9 @@ helm repo update
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Install with your custom values file:
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```bash
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helm install ceds-noc prometheus-community/kube-prometheus-stack --namespace monitoring -f kube-prom-values.yaml
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helm install ceds-noc prometheus-community/kube-prometheus-stack \
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--namespace monitoring \
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-f kube-prom-values.yaml
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```
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`kube-prom-values.yaml` (included in this repo) pins Prometheus, Alertmanager, and Grafana to the `monitoring-node=true` nodes, configures PVCs for metrics and Grafana data, and exposes Grafana via a LoadBalancer (MetalLB).
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@@ -296,13 +308,13 @@ kubectl get svc -n monitoring
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You should see:
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- `ceds-noc-grafana` as a `LoadBalancer` with an `EXTERNAL-IP` like `10.10.30.252`
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- Prometheus, Alertmanager, kube-state-metrics, node exporters, etc.
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- `ceds-noc-grafana` as a `LoadBalancer` with an `EXTERNAL-IP` like `<grafana-external-ip>`
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- Prometheus, Alertmanager, kube state metrics, node exporters, etc.
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Open Grafana at:
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```text
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http://10.10.30.252
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http://<grafana-external-ip>
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```
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Username: `admin`
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@@ -327,7 +339,7 @@ Choose the kube-prometheus-stack Prometheus datasource.
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You now have a live NOC for:
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- Cluster health (nodes, pods, API server)
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- Per‑node CPU, RAM, disk, pod counts
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- Per-node CPU, RAM, disk, pod counts
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- Ingress and MetalLB metrics
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---
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@@ -337,4 +349,4 @@ You now have a live NOC for:
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- Add Loki + Promtail for logs
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- Add Prometheus alerting rules (node down, high CPU, low disk, etc)
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- Add Alertmanager integrations (Discord/Slack/email)
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- Use GitOps (FluxCD or ArgoCD) to manage this repo as the source of truth.
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- Use GitOps (FluxCD or ArgoCD) to manage this repo as the source of truth
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@@ -1,6 +1,6 @@
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# Ced's K3s HomeLab (for draw.io text import)
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# Paste this into draw.io via: Arrange → Insert → Advanced → From text
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Ced HomeLab
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VLAN 10.10.30.0/24
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@@ -1,57 +0,0 @@
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# Ced's K3s HomeLab (Raspberry Pi Cluster)
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This repo captures the working configuration of your HA K3s cluster:
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- 3× control-plane nodes: `k3s-django-1/2/3`
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- 9× worker nodes split into:
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- Ingress: `k3s-node-1..3`
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- Data: `k3s-node-4..6`
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- Monitoring: `k3s-node-7..9`
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- MetalLB for LoadBalancer IPs on your HomeLab VLAN
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- ingress-nginx as the main ingress controller
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- kube-prometheus-stack (Prometheus + Grafana + Alertmanager + exporters)
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- Ced's NOC dashboards for Grafana
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You can use this as a GitHub repo, import the dashboards into Grafana, and keep long‑term documentation of Ced's HomeLab.
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## Quick Start (once K3s cluster is up)
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On `k3s-django-1` with `KUBECONFIG` pointing at the cluster:
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```bash
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git clone <your-repo-or-copy-files>
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cd k3s-homelab-full
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# 1) Label nodes into groups
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./scripts/03_label_nodes.sh
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# 2) Install MetalLB
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./scripts/10_install_metallb.sh
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# 3) Install ingress-nginx
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./scripts/20_install_ingress_nginx.sh
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# 4) Install Ced's NOC (kube-prometheus-stack)
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./scripts/30_install_ceds_noc.sh
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# 5) Deploy demo nginx ingress + Grafana/Prometheus ingress rules
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kubectl apply -f manifests/demo-app/demo-nginx.yaml
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kubectl apply -f manifests/ingress/grafana-ingress.yaml
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kubectl apply -f manifests/ingress/prometheus-ingress.yaml
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```
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Then update your desktop `hosts` file to point:
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```text
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10.10.30.251 demo.local grafana.local prometheus.local
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```
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## Structure
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- `cluster-setup.md` – step-by-step narrative of the full setup.
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- `kube-prom-values.yaml` – values file for `kube-prometheus-stack` (Ced's NOC).
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- `dashboards/` – starter Grafana dashboards in JSON.
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- `scripts/` – helper scripts to label nodes and install MetalLB, ingress, and NOC.
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- `manifests/` – YAML manifests for MetalLB, demo app, and ingresses.
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- `docs/per-node-notes.md` – inventory of each node (IP, role, hardware).
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- `diagrams/ced-k3s-from-text.txt` – text that can be imported into draw.io ("Arrange → Insert → Advanced → From text").
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