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Homelab Kubernetes Pipeline

This repo bootstraps a hybrid kubeadm cluster and then hands app delivery to Argo CD.

Architecture

The lab is intentionally small but production-shaped:

  • a Debian amd64 host runs the kubeadm control plane and local deployment tools
  • a Raspberry Pi arm64 node runs selected workloads
  • the Debian host also runs the always-on Gitea Docker service outside Kubernetes
  • the Debian host keeps a bare GitOps mirror under /home/jv/git-server/my-homelab-configs.git
  • a provisioning layer can PXE boot Debian 13 arm64 VMs for Pimox worker templates
  • OpenTofu owns the bootstrap layers for cluster, platform, apps, and edge
  • Argo CD continuously reconciles Kubernetes manifests from this repo
  • a local registry stores the website and demos images built for the worker architecture
  • the website image keeps Apache as the public server, uses PHP-FPM with OPcache for dynamic endpoints, and pre-renders read-heavy pages to static HTML during the image build
  • SOPS with age is the committed secret-management path for future encrypted Kubernetes secrets
  • an OCI jump box provides the public edge path back into the homelab over Tailscale, with nginx caching, gzip, HTTP/2, TLS session reuse, and upstream keepalive

Run ./jeannie up and ./jeannie nuke only from the Debian homelab server. The script intentionally refuses to run from non-Debian machines so a laptop cannot accidentally modify the cluster.

Flow

  1. bootstrap/provisioning

    • prepares a Debian server as a PXE and preseed service for arm64 VMs
    • serves Debian 13 arm64 netboot assets through TFTP and HTTP
    • creates a golden image install path with Kubernetes, containerd, qemu-guest-agent, cloud-init, and storage client packages ready
    • is driven by ./jeannie up when Pimox is reachable, without changing Orange Pi host networking

  2. bootstrap/cluster

    • creates the kubeadm control plane on the Debian amd64 node
    • joins worker nodes such as Raspberry Pi and Pimox Debian arm64 nodes
    • configures Calico-compatible pod CIDR
    • configures containerd to pull from the in-cluster NodePort registry
    • creates retained host directories under /data/openebs/local

  3. bootstrap/platform

    • installs a minimal Calico deployment through the Tigera operator
    • installs NodeLocal DNSCache for node-local DNS query caching
    • installs MetalLB for LAN LoadBalancer services
    • installs Traefik as the single Kubernetes ingress entry point
    • installs OpenEBS
    • creates openebs-hostpath-retain
    • installs Argo CD
    • installs Kyverno with audit-first baseline Pod Security policies and homelab image signature/SBOM admission controls
    • registers the private GitOps repo without storing the SSH private key in Terraform state

  4. bootstrap/apps

    • registers Argo CD Applications from the applications map
    • passes the website image produced by the build step into Argo CD as a Kustomize image override
    • deploys the tuned website runtime: Apache listens on port 8080, PHP-FPM listens on loopback inside the container, OPcache is enabled, and pre-rendered HTML handles the read-heavy pages
    • default apps are container-registry, website-production, demos-static, heimdall, n8n, and supply-chain-policy

  5. bootstrap/edge

    • connects to the OCI jump box
    • uploads nginx, HAProxy, Varnish, and Squid configs
    • obtains and renews Let's Encrypt certificates for the configured hostname
    • runs the edge cache/proxy chain with Docker Compose
    • enables gzip, HTTP/2, TLS session reuse, client keepalive, upstream keepalive, and cache headers for the public website path

Prerequisites

On the Debian host:

  • OpenTofu
  • Docker with Buildx
  • kubeadm, kubelet, kubectl, and containerd pinned to the target Kubernetes minor, currently v1.36
  • SSH access to worker nodes
  • SSH access to the OCI edge host
  • enough persistent storage for /data/openebs/local and /data/docker

After a clean Debian reinstall, bootstrap the host package set and desktop configuration first:

sudo apt-get update
sudo apt-get install -y git ansible sudo
git clone <repo-url> /home/jv/my-homelab-configs
cd /home/jv/my-homelab-configs
ansible-playbook -K -i bootstrap/host/inventory.ini bootstrap/host/playbook.yml

If you kept the private app-config archive generated from the old Debian host, pass its generated ansible-vars.yml with -e @/path/to/ansible-vars.yml. Details are in bootstrap/host/README.md.

The default kubeconfig path is /home/jv/.kube/config. Override it with KUBECONFIG_PATH or TF_VAR_kubeconfig_path when needed.

Version Discipline

The lab should converge on one Kubernetes minor across the API server and every kubelet. The Pimox golden-image default is v1.36 so rebuilt arm64 VM workers match the Debian control plane and Raspberry Pi worker instead of staying on an older template. Avoid treating a three-minor kubelet skew as normal steady state: it is only a temporary compatibility window and blocks the next control plane upgrade.

Check node versions from the Debian host:

./jeannie doctor-versions

The check prints the API server, kubelet versions, kubelet minors, and containerd runtimes. It exits nonzero when kubelet minors differ from the API server minor or when containerd major versions are mixed. The Gitea Actions auto path runs this check before app deploys; kubelet minor drift switches the job to ./jeannie rebuild-cluster so the Pimox template and worker VMs are replaced from the pinned image. For Pimox workers, prefer rebuilding from the corrected golden template and rejoining the worker over ad hoc live package upgrades.

Deploying

From the Debian server:

cd ~/my-homelab-configs
./jeannie up

The script first deploys external Gitea to the Debian host with Docker Compose under /data/homelab-gitea, backed by the HP laptop NVMe, so Git stays outside the Kubernetes rebuild blast radius. It then detects the Pimox host at 192.168.100.80 in auto mode. When SSH, qm, and vmbr0 are available, it applies bootstrap/provisioning, creates or reuses the Debian 13 arm64 template, creates or reuses one worker VM clone, discovers the guest IP through qemu-guest-agent, and passes that worker into the cluster layer. It then applies the remaining OpenTofu stacks, refreshes Argo CD apps, waits for the local registry, builds the website and demos images when their source changed, pushes them to the registry, recreates pods only after a new image is built, and applies the edge stack.

Set LAB_PIMOX_PIPELINE=false to skip Pimox automation. Set LAB_PIMOX_WORKER_COUNT=0 to create or refresh only the template. The pipeline keeps the template on its configured local storage, creates new worker VM clones on opi5_ssd by default when that Pimox storage is available, checks that the Pimox bridge already exists, refuses local as worker clone storage, and refuses to edit Orange Pi host networking. Keep durable data on the HP Debian laptop's data-vg or external backups; treat Orange Pi VM disks as rebuildable worker capacity.

LAB_PIMOX_SKIP_WORKER_INDEXES defaults to an empty value, so the pipeline owns worker index 1 and VMID 9010 when LAB_PIMOX_WORKER_COUNT=1. Set LAB_PIMOX_SKIP_WORKER_INDEXES=1 if an existing manually created first worker must be left untouched, or set LAB_PIMOX_WORKER_COUNT=2 to manage both VMID 9010 and VMID 9011.

OpenWrt firewall VM automation is available as a standalone command because it attaches to both WAN and LAN bridges. Run ./jeannie openwrt after vmbr1 already exists on the Orange Pi. The pipeline downloads the OpenWrt ARM SystemReady EFI image, writes basic WAN/LAN/firewall config into the image, imports it as VM 9100, attaches vmbr0 as WAN and vmbr1 as LAN, and stores the VM disk on the selected non-local Pimox storage. It leaves the VM stopped and not enabled for host boot by default. It does not use the Debian Kubernetes golden-node template for OpenWrt.

The website and demos images default to linux/amd64,linux/arm64 because both deployments can schedule on either the Debian host or ARM workers. Override with WEBSITE_IMAGE_PLATFORMS or DEMOS_IMAGE_PLATFORMS only when intentionally restricting node placement.

Build metadata is written under .lab/ so repeat runs can skip the website or demos image build when the source hash, platform, image reference, and registry manifest still match.

The website build is intentionally performed on the Debian homelab path and the Gitea Actions runner, not on a laptop. The current image uses php:8.5-fpm-alpine, installs Apache, routes PHP through PHP-FPM, enables OPcache for immutable image deploys, and runs apps/website/render-static-pages.sh during the image build. That render step produces static HTML for /, /cv.php, /blog.php, /demos.php, and /homelab-tree.php in the static languages. Runtime PHP remains for write and translation endpoints such as save_idea.php, visitor_ideas.php, translate.php, and save_lang.php.

Set LAB_GITEA_DEPLOY=false to skip the external Gitea deployment step when the service is already managed manually. The default Gitea target is jv@192.168.100.73, install directory /data/homelab-gitea, HTTP port 3000, and SSH port 32222.

Validation

Useful checks after a rebuild:

export KUBECONFIG=/home/jv/.kube/config

kubectl get nodes
kubectl -n argocd get applications
kubectl -n container-registry get pods
kubectl -n website-production get pods -o wide
kubectl -n demos-static get pods -o wide
kubectl -n heimdall get pods -o wide

ssh jv@192.168.100.73 'cd /data/homelab-gitea && sudo docker compose ps'

docker info --format '{{.DockerRootDir}}'
df -h / /data /data/openebs/local /data/docker

The website should be reached through the configured public hostname, not the raw OCI IP address, because the Let's Encrypt certificate is issued for the hostname.

Run a read-only health snapshot from the Debian server with:

./jeannie status

It reports host memory/disk, systemd services, Docker Compose stacks, Kubernetes health when the API is reachable, Pimox worker VM status, Tailscale, and key local/public HTTP endpoints.

Adding Nodes

For Pimox on Orange Pi 5 Plus, ./jeannie up can create the Debian 13 arm64 template and worker VM clones automatically when the Orange Pi storage path is healthy. Defaults are intentionally tied to the observed host: Pimox SSH host 192.168.100.80, bridge vmbr0, template VMID 9000 on local storage, two 4 GiB worker VMs starting at VMID 9010, worker clone storage opi5_ssd, and no CPU affinity because this Pimox is pinned to Debian Bullseye. The NVMe that was previously attached to the Orange Pi now belongs to the HP Debian laptop as LVM volume group data-vg; the current Orange Pi SSD-backed Pimox datastore is opi5_ssd and is used for rebuildable VM root disks. Details and override variables are in bootstrap/provisioning/README.md.

Worker indexes are stable. Index 1 maps to VMID 9010, node name pimox-worker-01, and worker key pimox01; index 2 maps to VMID 9011, and so on. LAB_PIMOX_SKIP_WORKER_INDEXES=1 leaves the first slot unmanaged while allowing higher indexes to be automated.

Run a full cluster rebuild from the Debian server with:

./jeannie rebuild-cluster

That path preserves external Gitea, rebuilds the Pimox template with 2 cores and 4 GiB memory, replaces two Pimox worker VMs with 2 cores and 4 GiB memory, and joins those workers to the Kubernetes cluster. CPU affinity is disabled by default because the Bullseye-pinned Pimox qm does not support it. The Raspberry Pi is still included as a Kubernetes worker by default; nuke does not clean it unless you explicitly add it to WORKER_SSH_TARGETS.

To pause the Kubernetes cluster without deleting kubeadm files, OpenTofu state, PV data, or VM disks, run:

./jeannie stop-cluster

This stops kubelet, stops Kubernetes CRI containers with crictl when available, stops any workers listed in WORKER_SSH_TARGETS, and gracefully shuts down automated Pimox worker VMs. It intentionally leaves the host containerd/Docker stack running so external Docker Compose services such as Gitea stay online. It does not run kubeadm reset, delete CNI files, or remove state. Use LAB_CLUSTER_STOP_CONTAINERD=true only when you intentionally want to stop the host container runtime too. Use LAB_CLUSTER_STOP_VM_TIMEOUT_SECONDS to change the Pimox shutdown timeout, LAB_CLUSTER_STOP_FORCE=false to avoid a hard qm stop after timeout, and the usual LAB_PIMOX_WORKER_COUNT, LAB_PIMOX_WORKER_BASE_VMID, and LAB_PIMOX_SKIP_WORKER_INDEXES variables to select VM workers. Resume the runtime with:

./jeannie start-cluster

To exclude the Raspberry Pi from the Kubernetes cluster, set LAB_INCLUDE_RASPBERRY_WORKER=false. To manage workers manually instead, add entries to bootstrap/cluster/variables.tf or a .tfvars file:

worker_nodes = {
  raspberrypi = {
    host         = "192.168.100.89"
    user         = "jv"
    node_name    = "raspberry"
    ssh_key_path = "/home/jv/.ssh/id_ed25519"
  }
}

Stateful apps currently pin retained local PVs to the debian node. Move or duplicate those PV manifests when you want storage on another node.

Workload Placement

bootstrap/cluster labels nodes with homelab placement metadata:

  • node-role.kubernetes.io/worker=worker on every worker so kubectl get nodes shows worker instead of <none> in the ROLES column
  • homelab.dev/node-role=control-plane, homelab.dev/storage=local, and homelab.dev/workload-class=control-plane on the Debian control plane
  • homelab.dev/node-role=edge-app, homelab.dev/storage=local, and homelab.dev/workload-class=edge on the Raspberry Pi worker
  • homelab.dev/node-role=app, homelab.dev/storage=ssd, and homelab.dev/workload-class=platform on automated Pimox worker clones when those workers are enabled

Override control_plane_node_labels, worker_node_labels, LAB_RASPBERRY_NODE_LABELS_JSON, or LAB_PIMOX_WORKER_NODE_LABELS_JSON when the physical layout changes. The current website, demos, and registry manifests are not moved automatically because the public NodePort path and retained OpenEBS hostpath PVs are node-local. Move workloads only after their storage and edge path are ready on the target node. Gitea is outside Kubernetes and is moved by changing the Raspberry Pi Docker install target instead.

The stateless platform controllers are pinned to Pimox worker nodes through homelab.dev/workload-class=platform and include hostname topology spread plus preferred pod anti-affinity so future Argo CD, Kyverno, Prometheus operator, and kube-state-metrics scheduling does not collapse onto the first worker that joins. PVC-backed monitoring StatefulSets are intentionally treated separately because their retained OpenEBS hostpath volumes are node-local. Run ./jeannie move-prometheus-stack-workers from the Debian host to label existing worker nodes, destroy only the existing prometheus-stack Helm release, delete its retained PVC/PV objects, and recreate the stack on the worker selector when you intentionally accept losing that monitoring data. A planned monitoring data migration should be handled as a separate maintenance task with backup, delete/recreate or storage migration steps, and post-restore checks.

The older NodePort path is now reserved for special cases such as the local registry. bootstrap/cluster still contains homelab-tailscale-nodeport support, but app traffic should normally enter through Traefik's MetalLB address instead of per-app NodePorts. The cluster stack advertises the LAN subnet from the configured Tailscale worker so the OCI edge can route to the Traefik LoadBalancer address:

metallb = {
  enabled                  = true
  repository               = "https://metallb.github.io/metallb"
  version                  = "0.16.0"
  namespace                = "metallb-system"
  address_pool             = ["192.168.100.240-192.168.100.240"]
  l2_advertisement_enabled = true
  pool_name                = "homelab-lan"
}

traefik = {
  enabled          = true
  repository       = "https://helm.traefik.io/traefik"
  chart_version    = "40.2.0"
  namespace        = "traefik"
  load_balancer_ip = "192.168.100.240"
  ingress_class    = "traefik"
}

tailscale_subnet_routes = {
  enabled    = true
  worker_key = "raspberrypi"
  routes     = ["192.168.100.0/24"]
}

DuckDNS resolves *.lab2025.duckdns.org to the OCI edge, so public requests for the service hostnames land on the same edge host. For direct LAN testing, point LAN DNS, /etc/hosts, or a Tailscale DNS override for app hostnames at Traefik's address:

192.168.100.240 lab2025.duckdns.org
192.168.100.240 demos.lab2025.duckdns.org
192.168.100.240 heimdall.lab2025.duckdns.org
192.168.100.240 n8n.lab2025.duckdns.org
192.168.100.240 prowlarr.lab2025.duckdns.org
192.168.100.240 sonarr.lab2025.duckdns.org
192.168.100.240 radarr.lab2025.duckdns.org
192.168.100.240 qbittorrent.lab2025.duckdns.org
192.168.100.240 kapowarr.lab2025.duckdns.org
192.168.100.240 suwayomi.lab2025.duckdns.org
192.168.100.240 maintainerr.lab2025.duckdns.org
192.168.100.240 grafana.lab2025.duckdns.org
192.168.100.240 argocd.lab2025.duckdns.org

The edge stack uses Traefik as its backend by default and validates http://192.168.100.240:80/ before updating the edge containers. If Tailscale subnet-route approval is not automatic in the tailnet policy, the edge deploy will fail clearly instead of silently keeping a broken public path.

For ./jeannie nuke, set WORKER_SSH_TARGETS to a space-separated list of remote SSH targets when more worker nodes exist. Set it to an empty string for a single-node rebuild.

Adding Platform Tools

Add Helm releases through bootstrap/platform's extra_helm_releases map.

Policy Guardrails

bootstrap/platform installs Kyverno and the upstream baseline Pod Security policies in Audit mode. This gives the lab policy reports for unsafe workload settings without blocking existing pods during the first rollout. After reports are clean, individual policies can be promoted to Enforce in bootstrap/platform/main.tf.

apps/supply-chain-policy adds a separate Kyverno ImageValidatingPolicy for the images built by this repo and pushed to the local registry. The policy targets 192.168.100.73:30500/php-website:* and 192.168.100.73:30500/demos-static:*, mutates admitted pods to image digests, and audits whether the image has both:

  • a valid Cosign signature from the homelab signing key
  • a signed SPDX SBOM attestation

The private Cosign key, generated password, and downloaded Cosign binary live in ${XDG_DATA_HOME:-$HOME/.local/share}/homelab/ by default so the signing identity survives temporary checkout cleanup. Repo-local image state files still live under .lab/, which is ignored by Git. ./jeannie apps creates or reuses the persistent Cosign key, publishes the public key into the Kyverno namespace as homelab-cosign-public-key, builds images with BuildKit SBOM attestations, signs the pushed images, attaches a signed SPDX SBOM predicate, and verifies both artifacts before refreshing the workload Applications. The policy starts in Audit mode so an existing live deployment can recover while the current images are signed; after ./jeannie apps verifies both images, change validationActions in apps/supply-chain-policy/local-registry-image-policy.yaml from Audit to Deny to make it admission-enforcing. Set COSIGN_PASSWORD if you want to manage the key password externally; otherwise the Debian runner creates cosign/cosign.password under the homelab state directory for non-interactive runs. Set COSIGN_KEY_PREFIX, COSIGN_PASSWORD_FILE, or COSIGN_BIN to override those paths.

DNS Cache

bootstrap/platform installs NodeLocal DNSCache in kube-system with registry.k8s.io/dns/k8s-dns-node-cache. The default listens on 169.254.20.10 and the kube-dns service IP 10.96.0.10, which keeps the rollout compatible with the current kube-proxy iptables path without rewriting kubelet DNS settings across the nodes. Override nodelocal_dns if the service CIDR or upstream DNS servers change.

MetalLB

MetalLB is present in bootstrap/platform but disabled by default. Enable it only after reserving a LAN IP range outside DHCP and outside any future OpenWrt LAN pool:

export TF_VAR_metallb='{
  enabled = true
  repository = "https://metallb.github.io/metallb"
  version = "0.16.0"
  namespace = "metallb-system"
  address_pool = ["192.168.100.240-192.168.100.250"]
  l2_advertisement_enabled = true
  pool_name = "homelab-lan"
}'

Traefik uses MetalLB for a LAN LoadBalancer address. App services such as the website, demos, and Heimdall should be ClusterIP services behind Kubernetes Ingress objects. The local registry remains a NodePort because the cluster nodes use it as a pull endpoint. Gitea is not a Kubernetes service; it runs on the Raspberry Pi Docker host.

Secrets

Use SOPS with age for secrets that need to live in Git. Start from .sops.yaml.example, replace the age recipient with the public key generated on the Debian host, and commit the resulting .sops.yaml. Keep the private age key outside the repo. Operational notes are in docs/secrets.md.

Edge Services

The OCI jump box runs the public edge path:

nginx -> HAProxy -> Varnish/Squid -> Traefik MetalLB IP

The bootstrap/edge stack renders configs from bootstrap/edge/templates and deploys them to /opt/homelab-edge on the OCI host. Defaults are in bootstrap/edge/variables.tf; override them through TF_VAR_* or a .tfvars file when the public host, SSH key, server name, backend Tailscale IP, or Traefik backend address changes.

The /git/ route is intentionally different from the Kubernetes app routes: it proxies to Gitea on the Raspberry Pi at the configured gitea_backend_port instead of Traefik. This keeps public read-only source browsing available even when the cluster has been destroyed.

For the main website, nginx terminates TLS, serves cached HTML and static assets, compresses text responses with gzip, advertises HTTP/2, reuses TLS sessions, and keeps upstream connections open to the Traefik backend. The application side marks pre-rendered HTML as Cache-Control: public, max-age=300, s-maxage=3600; the edge keeps CSS and JS under the stronger immutable asset policy. In local measurements, cached single-resource requests are dominated by the remote TCP/TLS path, while a reused HTTP/2 asset batch completes in roughly 60 ms after the connection is established.

Use the configured server_name in the browser, for example https://lab2025.duckdns.org. A raw OCI IP address will still show a browser certificate warning because the trusted certificate is issued for the hostname.

The edge stack uses HTTP-01 validation and requests one certificate covering server_name plus additional_server_names. DuckDNS resolves sub-subdomains under lab2025.duckdns.org to the same edge IP, so inbound TCP 80 and 443 must be open before ./jeannie up runs. Set TF_VAR_letsencrypt_email to receive expiry notices, or leave it empty to register without an email. Set TF_VAR_enable_letsencrypt=false to keep using the temporary local certificate.

Adding Apps

Add Kubernetes manifests under apps/<name> and register them in bootstrap/apps's applications map. Argo CD will own sync, pruning, and self-healing for the app.

The heimdall app is intentionally waited on at the end of ./jeannie apps. It runs the LinuxServer.io Heimdall dashboard, persists /config on OpenEBS, and seeds tiles for the website, demo apps, Gitea, Grafana, Prometheus, Alertmanager, Argo CD, the local registry, and Heimdall itself. Its manifest only selects Linux nodes; the bound OpenEBS local PV supplies the node affinity. Do not also pin it to a workload class unless the retained PV is rebuilt on a node with that label. Because Heimdall does not support reverse-proxy subfolder hosting cleanly, it is exposed through the dedicated hostname heimdall.lab2025.duckdns.org rather than a /heimdall/ path.

The n8n app runs in the n8n namespace with retained OpenEBS storage and is exposed at https://n8n.lab2025.duckdns.org. It receives OLLAMA_BASE_URL=http://192.168.100.73:11434 so workflows can call the existing Debian-host Ollama API for translation prewarming and batch jobs.

The ARR/media stack is intentionally not deployed by the Kubernetes app pipeline. It is better suited to a Docker Compose stack on the Debian host with persistent volumes under /data, where large media paths, qBittorrent writes, and service config directories can survive cluster rebuilds without OpenEBS node-affinity or PVC migration concerns. The legacy apps/arr-stack manifests are retained only as migration reference. The active host-level Compose definition lives under infra/arr-stack and stores persistent data under /data/arr.

Storage

OpenEBS provides the platform storage provisioner. Stateful Kubernetes apps use retained local PV paths such as /data/openebs/local/registry; these paths are intentionally outside kubeadm reset paths so data can survive cluster destroy/create cycles. Those critical volumes are declared explicitly as retained local PVs so a rebuilt cluster binds back to the same host paths instead of creating fresh directories.

For the current lab, the HP Debian laptop's NVMe is managed by LVM volume group data-vg and mounted under /data. OpenEBS retained hostpath data lives under /data/openebs/local, and Docker data should live under /data/docker where the host is configured that way. This keeps retained PVs, container layers, Buildx state, and image caches from filling /.

Gitea

Gitea is external bootstrap infrastructure. It runs on the Debian host as an always-on Docker Compose service from infra/gitea/docker-compose.yml, not as a Kubernetes workload. This keeps Git available when the Kubernetes cluster is destroyed and rebuilt.

The default data path is /data/homelab-gitea/data on the HP laptop NVMe. The Docker root is also expected to live on the /data storage path rather than the root filesystem.

Public source browsing stays available through https://lab2025.duckdns.org/git/. Registration is disabled and anonymous users can view public repositories, so the blog can link to code read-only while writes still require an authenticated Gitea account.

The Debian bare repo remains the GitOps mirror:

/home/jv/git-server/my-homelab-configs.git

Argo CD consumes that Debian mirror through the default gitops_repo_url. Gitea Actions pushes the main commit into the mirror before running the selected deploy command.

The platform bootstrap registers the Argo CD repository secret and the SSH host key for the Debian GitOps mirror. If Argo CD reports knownhosts: key is unknown after the Debian host was rebuilt or its SSH host key changed, refresh argocd-ssh-known-hosts-cm in the argocd namespace, restart argocd-repo-server, and hard-refresh the affected Application.

Deploy or refresh the external Gitea container from the Debian host with:

./jeannie deploy-gitea

Gitea Backups

./jeannie up installs a Debian-host systemd timer named homelab-gitea-backup.timer. The timer runs daily, SSHes to the configured Gitea host, executes gitea dump inside the Gitea Docker container, copies the dump back to Debian, and stores it under /home/jv/backups/gitea. The default retention is 30 days.

The same install step also creates homelab-gitea-restore-drill.timer. The monthly drill is non-destructive: it verifies the latest backup ZIP, extracts it to a temporary directory, records a report under /home/jv/backups/gitea-restore-drills, and removes the temporary extract. It does not write into the live Gitea data directory.

Run a manual backup from the Debian server with:

./jeannie backup-gitea

Run the restore drill manually with:

./jeannie drill-gitea-restore

Useful checks:

systemctl list-timers homelab-gitea-backup.timer
systemctl list-timers homelab-gitea-restore-drill.timer
sudo systemctl start homelab-gitea-backup.service
ls -lh /home/jv/backups/gitea
ls -lh /home/jv/backups/gitea-restore-drills

Gitea Actions

This repo includes a Gitea Actions workflow at .gitea/workflows/homelab-main.yml. It runs only on pushes to main and targets a repository-scoped Debian host runner with the label homelab-debian.

The workflow only blocks automatic deploy for external Gitea service changes: files under infra/gitea/, or edits inside the deploy_gitea, install_gitea_backup_timer, backup_gitea, or drill_gitea_restore functions in jeannie. Other changes use HOMELAB_ACTION_COMMAND=auto by default: Actions runs ./jeannie doctor-versions when the Debian runner already has a cluster kubeconfig. If node versions are aligned it runs ./jeannie apps; if kubelet minor drift is detected it runs ./jeannie rebuild-cluster; if no kubeconfig exists it also runs ./jeannie rebuild-cluster.

Set HOMELAB_ACTION_COMMAND=apps or HOMELAB_ACTION_COMMAND=rebuild-cluster on the runner to force one path.

./jeannie bootstrap-gitea-repo also registers the Debian host SSH public key with the Gitea repository and switches the Debian working copy's gitea remote to ssh://git@192.168.100.73:32222/jv/my-homelab-configs.git. The default key is /home/jv/.ssh/id_ed25519.pub; set LAB_GITEA_REPO_SSH_KEY_PATH to use a different Debian-host key, or LAB_GITEA_REPO_SSH_BOOTSTRAP=false to leave SSH access unchanged. The Actions deploy job uses the checked-out Actions workspace as the source commit, updates the first available persistent checkout from HOMELAB_DEPLOY_DIR, /home/jv/my-homelab-configs, or /home/jv/repos/my-homelab-configs, and otherwise deploys directly from the Actions workspace. It does not need SSH read access back to Gitea.

Enable Actions for the repository in Gitea, then create a repository-level runner token from:

https://lab2025.duckdns.org/git/jv/my-homelab-configs/settings/actions/runners

Register and start the Debian runner from the Debian server:

cd ~/my-homelab-configs
GITEA_RUNNER_REGISTRATION_TOKEN='<repo-runner-token>' ./jeannie install-gitea-runner

The runner is installed as homelab-gitea-runner.service, runs as user jv, and uses a host label instead of a Docker job container because deployment needs the Debian host's Docker, OpenTofu, kubeconfig, SSH keys, and local state.

The deployment job is non-interactive. User jv must be able to run sudo -n true on the Debian host for deployment commands that require sudo.

Useful checks:

systemctl status homelab-gitea-runner.service
journalctl -u homelab-gitea-runner.service -n 100 --no-pager

Renovate

renovate.json defines dependency update rules for Dockerfiles, OpenTofu providers, Helm chart versions, and the pinned tools used by the Gitea Actions workflow. Renovate should open reviewable update branches or PRs only; it must not auto-merge infrastructure changes. Keep app-only dependency updates on the normal Gitea Actions path, and run ./jeannie up manually on the Debian server for platform or provisioning updates.

Destructive Rebuilds

./jeannie nuke resets kubeadm, containerd runtime state, CNI files, Calico links, iptables rules, and local OpenTofu state. It does not delete retained data under /data/openebs/local.

For multi-node labs, set WORKER_SSH_TARGETS to a space-separated list of SSH targets. It defaults to an empty string so worker nodes are not cleaned unless you explicitly include them.

Website App

The website is a PHP app under apps/website. It includes a home page, CV page, blog page, and demos page, plus a lightweight translation flow backed by Redis, n8n, and Ollama. Static language files live in apps/website/lang; en.php and nah.php are curated source files, with the Nahuatl home page intentionally biased toward as many Nahuatl words as possible while keeping technical terms understandable. Unsupported browser languages use the same-origin /translate.php endpoint, which calls Ollama server-side through OLLAMA_HOST and OLLAMA_MODEL; the browser never calls the private Ollama IP directly. Redis caches per-string translation results in the website-production namespace, while n8n is available for translation prewarming and batch workflow jobs. The default model is the custom website-translator Ollama model defined in apps/website/ollama/Modelfile. Generated runtime language JSON is saved through save_lang.php on the website PVC, and translate.php emits structured logs for cache hits, misses, Ollama latency, JSON parse failures, and timeouts.

Create or refresh the Ollama model on the Debian server before deploying a website image that points at it:

./jeannie website-translation-model

Ollama must also listen on the Debian host LAN address so Kubernetes pods on other nodes can reach OLLAMA_HOST=http://192.168.100.73:11434:

./jeannie website-ollama-listen

The CV page has two client-side presentation modes:

  • Elegant: dark, minimal, terminal-inspired styling with a square profile image and light green console text.
  • Fancy: centered circular profile image, cursive orbit text, and a cursor-following portrait rotation effect.

The Demos page is a catalog in the PHP website. The actual demo applications are served from a separate demos-static artifact under apps/demos-static and are published through the demos-static Argo CD application. Public traffic reaches them through the edge path at /demo-apps/.

./jeannie up builds and pushes two independent images:

  • a content-hash php-website tag generated by jeannie and passed to Argo CD as a Kustomize image override
  • demos-static:latest from apps/demos-static
  • Cosign signatures and signed SPDX SBOM attestations for both pushed images

The website manifest keeps the stable base image name php-website:bootstrap. During bootstrap, jeannie hashes apps/website, builds <registry>/php-website:src-<hash>, exports that exact reference through TF_VAR_website_image_ref, and the Argo CD Application applies it through Kustomize. This keeps the GitOps source generic while the deployed image remains immutable. The Kyverno supply-chain policy mutates admitted pods to the verified image digest, so the workload runs the same digest that was signed and attested.

After ./jeannie apps, the live deployment image should be a content-hash tag, for example 192.168.100.73:30500/php-website:src-.... If it still shows php-website:latest, Argo CD has not rendered the current Application source. Check the website-production Application source, sync status, and repository access before restarting pods.

The first demo, The Client-Side Media Cruncher (Wasm + TS), currently performs private, browser-only image compression and conversion using native Canvas APIs. Heavier video conversion, such as MP4 to WebM, should use a Rust core compiled to WebAssembly with a TypeScript UI so the codec work stays fast and still avoids backend uploads.

The demos are designed to be local-first so the current cluster can serve them from any Linux app node without turning either pod into an application server. The website pod serves the portfolio shell and the demos-static pod serves static demo bundles; CPU-heavy work runs in the visitor's browser. Because the deployments can run on either Debian or ARM workers, avoid bundling large ML models, server-side WebSocket probes, or backend video transcoders into either image. If those demos become production-grade, lazy load model assets in the browser or move backend workers to a larger node, such as VMs on the Orange Pi 5 Plus.

Current demo inventory:

  • Client-side media cruncher: image conversion/compression with Canvas; future Rust/Wasm codec path for video.
  • Internet quality visualizer: live Canvas graph for latency, jitter, and stability using same-origin browser probes; a dedicated WebSocket echo endpoint would be the production version.
  • Local log and JSON toolbelt: JSON formatting, JWT decoding, URL parsing, and local text-log filtering.
  • Architecture simulator: click-driven load, crash, and auto-scale simulation.
  • Offline traveler converter: PWA shell with timezone, currency, and GB/GiB conversions.
  • Privacy-first redactor: local image redaction prototype; future onnxruntime-web plus quantized YOLO or face model path.
  • Local sentiment sandbox: lightweight local sentiment, keyword, and summary prototype; future Transformers.js/ONNX path.
  • Model drift simulator: visual MLOps playground for spikes, corrupted inputs, and retraining.

The Kubernetes deployment uses apps/website/web-app.yaml as a Kustomize base. Keep TF_VAR_registry_endpoint aligned with the local registry endpoint used by the app image build and with the image globs in apps/supply-chain-policy/local-registry-image-policy.yaml.

Keep the .terraform.lock.hcl files committed. They pin provider selections and make bootstrap behavior reproducible across nodes and rebuilds.