集群升级

注意事项

升级集群版本建议逐步升级，比如 v1.20.1–>v1.21.1–>v1.22.1–>v1.23.1–>v1.24.1，不能跨度过大，否则会报错。

升级步骤

• 查看集群版本

[root@hadoop102 ~]# kubectl get nodes
NAME        STATUS                     ROLES                  AGE    VERSION
hadoop102   Ready,SchedulingDisabled   control-plane,master   203d   v1.22.1
hadoop103   Ready                      <none>                 195d   v1.23.1
hadoop104   Ready                      <none>                 195d   v1.23.1

• 确定升级版本

[root@hadoop102 ~]# yum list --showduplicates kubeadm --disableexcludes=kubernetes
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
 * base: mirrors.cqu.edu.cn
 * epel: repo.jing.rocks
 * extras: mirrors.cqu.edu.cn
 * updates: mirrors.cqu.edu.cn
Installed Packages
kubeadm.x86_64                                                                                                             1.24.1-0                                                                                                              @kubernetes
Available Packages
kubeadm.x86_64                                                                                                             1.6.0-0                                                                                                               kubernetes
kubeadm.x86_64                                                                                                             1.6.1-0 

• 升级Master

  • 升级kubeadm

  yum install -y kubeadm-1.24.1-0 --disableexcludes=kubernetes
  

  • 查看版本

  kubeadm version
  

  • 查看集群升级计划

  kubeadm upgrade plan
  

  • 升级集群

  kubeadm upgrade apply 
  

  • 升级kubelet和kubectl组件

  yum install -y kubelet-1.24.1-0 kubectl-1.24.1-0 --disableexcludes=kubernetes
  

  • 重启kubelet

  systemctl daemon-reload
  systemctl restart kubelet
  

• 升级worker

  • 升级kubeadm

  yum install -y kubeadm-1.24.1-0 --disableexcludes=kubernetes
  

  • 查看版本

  kubeadm version
  

  • 升级 node 节点

  kubeadm upgrade node
  

  • 升级kubelet和kubectl组件

  yum install -y kubelet-1.24.1-0 kubectl-1.24.1-0 --disableexcludes=kubernetes
  

  • 重启kubelet

  systemctl daemon-reload
  systemctl restart kubelet
  

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