升級Debian上的Kubernetes集群需要仔細規劃和執行,以確保集群的穩定性和安全性。以下是一個詳細的升級步驟指南:
備份數據:
/etc/kubernetes/
目錄和 /var/lib/etcd/
目錄。etcdctl
工具備份 etcd 數據。檢查集群狀態:
更新系統包:
sudo apt update
sudo apt upgrade -y
更換 Kubernetes 源:
/etc/apt/sources.list
文件,將其中的舊版本代號替換為新版本的代號。例如,如果你要從 Debian 10(Buster)升級到 Debian 11(Bullseye),可以這樣做:sudo sed -i 's/buster/bullseye/g' /etc/apt/sources.list
sudo apt update
升級控制平面節點(Master 節點):
kubeadm
二進制文件,并替換舊版本文件:wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubeadm
chmod +x kubeadm
sudo mv kubeadm /usr/local/bin/
kubeadm
版本:kubeadm version
kubeadm upgrade plan
kubeadm upgrade apply v1.29.10
kubectl drain k8s-master --ignore-daemonsets
kubelet
和 kubectl
:wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubelet
wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubectl
chmod +x kubelet kubectl
sudo mv kubelet /usr/local/bin/
sudo mv kubectl /usr/local/bin/
kubelet
服務:sudo systemctl daemon-reload
sudo systemctl restart kubelet
kubectl uncordon k8s-master
升級工作節點:
kubeadm
二進制文件:wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubeadm
chmod +x kubeadm
sudo mv kubeadm /usr/local/bin/
kubectl drain k8s-node1 --ignore-daemonsets
kubelet
和 kubectl
:wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubelet
wget https://dl.k8s.io/release/v1.29.10/bin/linux/amd64/kubectl
chmod +x kubelet kubectl
sudo mv kubelet /usr/local/bin/
sudo mv kubectl /usr/local/bin/
kubelet
服務:sudo systemctl daemon-reload
sudo systemctl restart kubelet
kubectl uncordon k8s-node1
在進行升級之前,請詳細閱讀 Kubernetes 官方文檔,以確保按照正確的步驟進行操作。