在Debian環境下升級Kubernetes集群的版本,可以按照以下步驟進行:
控制平面包括API Server、Controller Manager、Scheduler等。以下是升級這些組件的步驟:
sudo systemctl stop kube-apiserver
sudo systemctl stop kube-controller-manager
sudo systemctl stop kube-scheduler
你可以使用kubeadm
來升級控制平面組件:
# 下載新版本的kubeadm、kubelet和kubectl
wget https://dl.k8s.io/release/$(curl -L https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubeadm
wget https://dl.k8s.io/release/$(curl -L https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubelet
wget https://dl.k8s.io/release/$(curl -L https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl
# 賦予執行權限
chmod +x kubeadm kubelet kubectl
# 移動到系統路徑
sudo mv kubeadm /usr/local/bin/
sudo mv kubelet /usr/local/bin/
sudo mv kubectl /usr/local/bin/
# 升級kubelet
sudo systemctl daemon-reload
sudo systemctl restart kubelet
# 初始化一個新的臨時控制平面
kubeadm init phase control-plane --pod-network-cidr=10.244.0.0/16
# 將現有的控制平面組件遷移到新的控制平面
kubeadm init phase control-plane all --upload-certs --apiserver-advertise-address=<你的API Server IP>
# 按照提示完成升級過程
工作節點的升級相對簡單,可以使用kubeadm
來完成:
# 下載并安裝新版本的kubelet和kubectl
wget https://dl.k8s.io/release/$(curl -L https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubelet
wget https://dl.k8s.io/release/$(curl -L https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl
# 賦予執行權限
chmod +x kubelet kubectl
# 移動到系統路徑
sudo mv kubelet /usr/local/bin/
sudo mv kubectl /usr/local/bin/
# 重啟kubelet服務
sudo systemctl daemon-reload
sudo systemctl restart kubelet
# 升級工作節點
kubeadm upgrade node
升級完成后,驗證集群的狀態和版本:
# 檢查控制平面組件版本
kubectl get componentstatus
# 檢查工作節點版本
kubectl get nodes -o wide
確認所有組件都已成功升級后,可以清理舊版本的控制平面組件:
sudo systemctl stop kube-apiserver
sudo systemctl stop kube-controller-manager
sudo systemctl stop kube-scheduler
sudo systemctl disable kube-apiserver
sudo systemctl disable kube-controller-manager
sudo systemctl disable kube-scheduler
sudo rm /usr/local/bin/kube-apiserver
sudo rm /usr/local/bin/kube-controller-manager
sudo rm /usr/local/bin/kube-scheduler
通過以上步驟,你應該能夠在Debian環境下成功升級Kubernetes集群的版本。