blumeops/docs/tutorials/replication/kubernetes-bootstrap.md

title	tags
kubernetes-bootstrap	tutorials replication kubernetes

Bootstrapping Kubernetes

Audiences: Replicator

This tutorial walks through setting up a Kubernetes cluster for your homelab, making it accessible via Tailscale.

Choosing a Distribution

For homelab use, lightweight distributions work well:

Distribution	Best For	BlumeOps Uses
Minikube	Single-node, macOS	Yes
k3s	Single-node, Linux	-
kind	Local development	-
kubeadm	Multi-node clusters	-

This tutorial uses minikube, but principles apply broadly.

For BlumeOps specifics, see cluster.

Step 1: Install Minikube

macOS

brew install minikube

Linux

curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
sudo install minikube-linux-amd64 /usr/local/bin/minikube

Step 2: Create the Cluster

minikube start \
  --driver=docker \
  --cpus=4 \
  --memory=8g \
  --disk-size=100g \
  --apiserver-names=k8s.your-tailnet.ts.net,$(hostname) \
  --listen-address=0.0.0.0

Key flags:

• --apiserver-names - Include your Tailscale hostname for remote access
• --listen-address=0.0.0.0 - Allow connections from other machines

Step 3: Verify the Cluster

kubectl get nodes
# Should show your node as Ready

kubectl get pods -A
# Should show system pods running

Step 4: Expose via Tailscale

To access the cluster from other Tailscale devices, expose the API server:

Option A: Tailscale Serve (Simple)

tailscale serve --bg --tcp 6443 tcp://localhost:$(minikube ip --format '{{.Port}}')

Option B: Tailscale Kubernetes Operator (Advanced)

For production-like setup, install the Tailscale operator which manages ingress automatically.

BlumeOps uses TCP passthrough via Caddy - see routing.

Step 5: Configure Remote Access

On your workstation, add a context for the remote cluster:

# Copy the CA cert from the server
scp server:~/.minikube/ca.crt ~/.kube/minikube-ca.crt

# Add the cluster
kubectl config set-cluster minikube-remote \
  --server=https://k8s.your-tailnet.ts.net:6443 \
  --certificate-authority=$HOME/.kube/minikube-ca.crt

# Add credentials (copy from server's ~/.kube/config)
kubectl config set-credentials minikube-remote \
  --client-certificate=... \
  --client-key=...

# Add context
kubectl config set-context minikube-remote \
  --cluster=minikube-remote \
  --user=minikube-remote

# Test
kubectl --context=minikube-remote get nodes

Step 6: Storage Configuration

For persistent workloads, configure storage:

Local Path Provisioner (Simple)

kubectl apply -f https://raw.githubusercontent.com/rancher/local-path-provisioner/master/deploy/local-path-storage.yaml
kubectl patch storageclass local-path -p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'

NFS for Shared Storage

If you have a NAS:

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-share
spec:
  capacity:
    storage: 1Ti
  accessModes:
    - ReadWriteMany
  nfs:
    server: nas.your-tailnet.ts.net
    path: /volume1/k8s

What You Now Have

• A Kubernetes cluster running on your server
• Remote access via Tailscale
• Storage for persistent workloads

Next Steps

• argocd-config - GitOps deployments
• Install essential addons (ingress controller, cert-manager)

BluemeOps Specifics

BlumeOps' cluster configuration includes:

• Tailscale operator for automatic ingress
• NFS mounts from sifaka for media storage
• CloudNativePG for PostgreSQL databases

See cluster and apps for full details.

Troubleshooting

Problem	Solution
Can't connect remotely	Check --apiserver-names includes Tailscale hostname
Pods stuck pending	Check storage class is available
Connection refused	Verify --listen-address=0.0.0.0 was set
Certificate errors	Ensure CA cert matches server's