From 29b7f448ec0bad2f6a80ffeda4ffcd91140317e5 Mon Sep 17 00:00:00 2001 From: Dawid Rycerz Date: Sun, 8 Feb 2026 22:52:24 +0100 Subject: feat(posts): port archived posts from old rycerz.co site Co-Authored-By: Claude Opus 4.6 --- ...eploy-kubernetes-cluster-in-minutes-with-k3s.md | 116 +++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 src/content/post/deploy-kubernetes-cluster-in-minutes-with-k3s.md (limited to 'src/content/post/deploy-kubernetes-cluster-in-minutes-with-k3s.md') diff --git a/src/content/post/deploy-kubernetes-cluster-in-minutes-with-k3s.md b/src/content/post/deploy-kubernetes-cluster-in-minutes-with-k3s.md new file mode 100644 index 0000000..2d02c4b --- /dev/null +++ b/src/content/post/deploy-kubernetes-cluster-in-minutes-with-k3s.md @@ -0,0 +1,116 @@ +--- +title: "Deploy K8s Cluster in Minutes with k3s" +description: "deploy kubernetes cluster in minutes with k3s with metallb letsencrypt nginx ingress" +publishDate: "2020-03-23" +tags: ["archived", "docker", "kubernetes", "en"] +author: "Dawid" +--- + +[K3S](https://k3s.io) is a lightweight and certified Kubernetes distribution, perfect for run development environments, CI/CD and IoT. It works very well with the ARM architecture. It's packaged to a single binary that makes deployment and setup easy. + +The default installation comes with: + +- embedded SQLite +- containerd +- flannel +- coredns +- traefik (ingress controller) +- local path provisioner +- service load balancer + +All those features are more than enough for most use-cases. Of course, installation is fully configurable, so if you want etcd, docker, Nginx ingress and so on - go to official documentation page https://rancher.com/docs/k3s/latest/en/ . + +## Default installation + +Login to machine and run: + +```bash +curl -sfL https://get.k3s.io | sh - +``` + +and that's it... +After a few seconds, you should see that the master node is ready with `k3s kubectl get node`. + +You will find *config.yaml* for kubernetes in `/etc/rancher/k3s/k3s.yaml` + +## Advanced installation with nginx-ingress, metallb and cert-manager + +1. Deploy k3s without traefik and servicelb + + ```bash + curl -sfL https://get.k3s.io | K3S_KUBECONFIG_MODE="644" INSTALL_K3S_EXEC=" --no-deploy=servicelb --no-deploy=traefik" sh -s - + ``` + +2. Get config from `/etc/rancher/k3s/k3s.yaml` and put into `~/.kube/config` on your machine + +3. [Install helm](https://helm.sh/docs/intro/install/) + + ```bash + curl https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash + ``` + +4. Add helm repo and update + + ```bash + helm repo add stable https://kubernetes-charts.storage.googleapis.com/ + helm repo update + ``` + +5. Install [metallb](https://github.com/metallb/metallb). Range of available ip addresses for loadbalancer are set in `configInline.address-pools[0].addresses[0]`. + + ```bash + helm install --namespace=kube-system \ + --set configInline.address-pools[0].name=default \ + --set configInline.address-pools[0].protocol=layer2 \ + --set configInline.address-pools[0].addresses[0]=192.168.1.10-192.168.1.50 \ + metallb stable/metallb + ``` + +6. Install [nginx-ingress](https://github.com/kubernetes/ingress-nginx) + + ```bash + helm install --namespace=kube-system \ + --set rbac.create=true \ + nginx-ingress stable/nginx-ingress + ``` + +7. Install and configure [certmanager](https://github.com/jetstack/cert-manager) for lets-encrypt + + ```bash + kubectl apply -f https://raw.githubusercontent.com/jetstack/cert-manager/release-0.14/deploy/manifests/00-crds.yaml + + helm install --namespace=kube-system cert-manager stable/cert-manager + + cat <