K8S版本更新

查看版本

kubectl version --short

查看yum仓库中最新版本

yum list --showduplicates kubeadm --disableexcludes=kubernetes
yum install -y kubeadm-1.22.2-0 --disableexcludes=kubernetes

设置进入维护模式

kubectl drain vms61.rhce.cc --ignore-daemonsets

升级各组件

#查看升级计划
 kubeadm upgrade plan 
 kubeadm upgrade apply v1.22.2
#不更新etcd
 kubeadm upgrade apply 1.22.2 --etcd-upgrade=false

升级kubelet

yum install -y kubelet-1.22.2-0 kubectl-1.22.2-0 --disableexcludes=kubernetes
systemctl daemon-reload ; systemctl restart kubelet
kubectl uncordon vms16.rhce.cc
第二台master 直接执行 kubeetl upgrade node 即可

升级第二台master

升级master — kubeadm

yum list --showduplicates kubeadm --disableexcludes=kubernetes
yum install -y kubeadm-1.20.1-0 --disableexcludes=kubernetes 
#设置进入维护模式 
kubectl drain vms16.rhce.cc --ignore-daemonsets
#升级各组件
kubeadm upgrade node 
kubectl uncordon vms1x.rhce.cc 
#升级kubelet 
yum install -y kubelet-1.20.1-0 kubectl-1.20.1-0 --disableexcludes=kubernetes
systemctl daemon-reload ; systemctl restart kubelet

升级worker

升级master — kubeadm

yum install -y kubeadm-1.22.2-0 --disableexcludes=kubernetes
#设置进入维护模式
kubectl drain vms62.rhce.cc --ignore-daemonsets
#升级各组件
kubeadm upgrade node
kubectl uncordon vms62.rhce.cc
#升级kubelet
yum install -y kubelet-1.22.2-0 kubectl-1.22.2-0 --disableexcludes=kubernetes
systemctl daemon-reload ; systemctl restart kubelet