Memo/Docker/k3s

k3s: Lightweight Kubernetes
- k3s内蔵証明書の更新

k3s: Lightweight Kubernetes †

k3s - Lightweight Kubernetes | k3s
- 軽量 Kubernetes クラスタ
- 最小メモリ: 512MB、バイナリ:40MB
- 向いている用途: ARM環境、IoT、CI等々

記事
- IoT向けの軽量なKubernnetes(?) k3sとはなにか - Qiita

k3s内蔵証明書の更新 †

k3s内蔵の証明書の期限は365日

期限切れだと、ホスト上でkubectlコマンドを実行してもエラーになる

kubectl version --short
...
error: You must be logged in to the server (the server has asked for the client to provide credentials)

Rotating Client and Server Certificates | K3s

stop/startだけで、kubectlの失敗は無くなった

sudo service k3s stop
sudo service k3s start

# 以下のコマンドはなぜかエラー
sudo /usr/local/bin/k3s certificate rotate --config /etc/rancher/k3s/config.yaml
FATA[0000] stat /var/lib/rancher/k3s/server/tls: no such file or directory

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Memo/Docker/k3s

k3s: Lightweight Kubernetes †

k3s内蔵証明書の更新 †

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