Kubernetes-集群升级
标签：tar image role can install chosen RKE rest bec
集群版本V1.18.2
root@k8s:~# kubectl get nodes NAME STATUS ROLES AGE VERSION k8s Ready master 20d v1.18.2 node1 Ready worker 20d v1.18.2 node2 Ready worker 20d v1.18.2 node3 Ready worker 20d v1.18.2
将master标记为不可调度
trnuser@k8s:~$ kubectl cordon k8s node/k8s cordoned trnuser@k8s:~$ kubectl get nodes NAME STATUS ROLES AGE VERSION k8s Ready,SchedulingDisabled master 20d v1.18.2 node1 Ready worker 20d v1.18.2 node2 Ready worker 20d v1.18.2 node3 Ready worker 20d v1.18.2 trnuser@k8s:~$
安装指定版本的kubeadm,kubelet,kubectl
sudo apt install kubeadm=1.19.7-00 kubectl=1.19.7-00 kubelet=1.19.7-00 -y
重启kubelet服务
systemctl restart kubelet
应用升级
trnuser@k8s:~$ sudo kubeadm upgrade apply v1.19.7 [upgrade/config] Making sure the configuration is correct: [upgrade/config] Reading configuration from the cluster... [upgrade/config] FYI: You can look at this config file with ‘kubectl -n kube-system get cm kubeadm-config -oyaml‘ [preflight] Running pre-flight checks. [upgrade] Running cluster health checks [upgrade/version] You have chosen to change the cluster version to "v1.19.7" [upgrade/versions] Cluster version: v1.18.2 [upgrade/versions] kubeadm version: v1.19.7 [upgrade/confirm] Are you sure you want to proceed with the upgrade? [y/N]: y [upgrade/prepull] Pulling images required for setting up a Kubernetes cluster [upgrade/prepull] This might take a minute or two, depending on the speed of your internet connection [upgrade/prepull] You can also perform this action in beforehand using ‘kubeadm config images pull‘ ...
完成升级并验证
trnuser@k8s:~$ kubectl get nodes NAME STATUS ROLES AGE VERSION k8s Ready,SchedulingDisabled master 20d v1.19.7 node1 Ready worker 20d v1.18.2 node2 Ready worker 20d v1.18.2 node3 Ready worker 20d v1.18.2
恢复调度
trnuser@k8s:~$ kubectl uncordon k8s node/k8s uncordoned trnuser@k8s:~$ kubectl get nodes NAME STATUS ROLES AGE VERSION k8s Ready master 20d v1.19.7 node1 Ready worker 20d v1.18.2 node2 Ready worker 20d v1.18.2 node3 Ready worker 20d v1.18.2
标签：tar image role can install chosen RKE rest bec
原文地址：https://www.cnblogs.com/bigdad/p/14538222.html