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其中一台master执行

Code Block
yum install -y kubeadm-1.28.2*

任一master执行验证集群能否升级

Code Block
kubeadm upgrade plan

master1上执行
执行升级命令（这一步需要等待）

Code Block
kubeadm upgrade apply v1.28.2

其它master上执行

Code Block
yum install -y kubeadm-1.28.2*
kubeadm upgrade node

master升级

Code Block
yum install -y kubelet-1.28.2* kubectl-1.28.2* --disableexcludes=kubernetes
sed -i 's#sandbox_image = ".*"#sandbox_image = "registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.9"#' /etc/containerd/config.toml
echo '' >/var/lib/kubelet/kubeadm-flags.env
echo '' >/etc/sysconfig/kubelet systemctl daemon-reload
systemctl daemon-reload
systemctl restart kubelet

等一台结束后通过kubectl get node查看对应的master是否已经变成v1.27.6，再去执行另外一台master，依次升级完所有master节点

node上升级

Code Block
yum install -y kubeadm-1.28.2* kubelet-1.28.2* kubectl-1.28.2*
sed -i 's#sandbox_image = ".*"#sandbox_image = "registry.cn-hangzhou.aliyuncs.com/google_containers/pause:3.9"#' /etc/containerd/config.toml
echo '' >/var/lib/kubelet/kubeadm-flags.env
echo '' >/etc/sysconfig/kubelet kubeadm upgrade node
systemctl daemon-reload
systemctl restart kubelet