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Building a MicroK8s Cluster with Mini PCs

Daigo Suhara
Author
Daigo Suhara
Graduate student. Maintainer of Metal3.
Table of Contents

Environment
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  • MAAS server *IP: 192.168.100.50 *node1 *OS: Ubuntu24.04 *IP: 192.168.100.8 *node2 *OS: Ubuntu24.04 *IP: 192.168.100.9

(Unnecessary) Installing docker
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sudo snap install docker

# docker実行権限付与
sudo addgroup --system docker
sudo adduser $USER docker

Installing microk8s
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sudo snap install microk8s

# 起動
sudo microk8s start

Run this on two servers

Create a cluster
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Check the command to join node1

sudo microk8s.add-node

The output should be as below

From the node you wish to join to this cluster, run the following:
microk8s join 192.168.100.8:25000/3039a88b56eaa8aa4b37fcc6ee281bdf/f8d2731d0c54

Use the '--worker' flag to join a node as a worker not running the control plane, eg:
microk8s join 192.168.100.8:25000/3039a88b56eaa8aa4b37fcc6ee281bdf/f8d2731d0c54 --worker

Join the cluster on node2

microk8s join 192.168.100.8:25000/3039a88b56eaa8aa4b37fcc6ee281bdf/f8d2731d0c54

After waiting a while, Successfully joined the cluster. I was able to join the cluster with the output

# エイリアス作成
sudo snap alias microk8s.kubectl kubectl

sudo microk8s.kubectl get nodes

If you check by typing the command

NAME    STATUS   ROLES    AGE   VERSION
node1   Ready    <none>   15m   v1.32.3
node2   Ready    <none>   77s   v1.32.3

The node is properly registered.

argoCD installation
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#　ネームスペースの作成
sudo kubectl create namespace argocd

# 公式マニフェストでデプロイ
sudo kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

# サービスポート確認
sudo kubectl get svc argocd-server -n argocd

# パスワード確認
sudo kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d; echo

Reference
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*https://devops-blog.virtualtech.jp/entry/20220322/1647924202

Read the original article on Qiita