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3.升级二进制部署的kubernetes集群
Kubernetes（简称k8s）是Google在2014年6月开源的一个容器集群管理系统，使用Go语言开发，用于管理云平台中多个主机上的容器化应用，Kubernetes的目标是让部署容器化的应用简单并且高效，Kubernetes提供了资源调度、部署管理、服务发现、扩容缩容、监控，维护等一整套功能。努力成为跨主机集群的自动部署、扩展以及运行应用程序容器的平台。 它支持一系列容器工具, 包括且不限于Docker等。
基础操作
查看当前版本信息
[root@k8s-master01 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master01 Ready <none> 57d v1.23.6
k8s-master02 Ready <none> 57d v1.23.6
k8s-master03 Ready <none> 57d v1.23.6
k8s-node01 Ready <none> 57d v1.23.6
k8s-node02 Ready <none> 57d v1.23.6
[root@k8s-master01 ~]#
主机域名以及IP地址
[root@k8s-master01 ~]# cat /etc/hosts | grep k8s
192.168.1.230 k8s-master01
192.168.1.231 k8s-master02
192.168.1.232 k8s-master03
192.168.1.233 k8s-node01
192.168.1.234 k8s-node02
[root@k8s-master01 ~]#
下载二进制安装包
[root@k8s-master01 ~]# wget https://dl.k8s.io/v1.23.9/kubernetes-server-linux-amd64.tar.gz
[root@k8s-master01 ~]#
解压二进制安装包
[root@k8s-master01 ~]# tar xf kubernetes-server-linux-amd64.tar.gz
[root@k8s-master01 ~]#
升级Maser
升级三台主节点上的客户端
[root@k8s-master01 ~]# scp kubernetes/server/bin/kubectl root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kubectl root@192.168.1.231:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kubectl root@192.168.1.232:/usr/local/bin/
[root@k8s-master01 ~]#
升级三台主节点api组件
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl stop kube-apiserver"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kube-apiserver root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl start kube-apiserver"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# kube-apiserver --version
Kubernetes v1.23.9
[root@k8s-master01 ~]#
升级三台主节点控制器组件
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl stop kube-controller-manager"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kube-controller-manager root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl start kube-controller-manager"
[root@k8s-master01 ~]#
升级三台主节点选择器组件
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl stop kube-scheduler"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kube-scheduler root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl start kube-scheduler"
[root@k8s-master01 ~]#
升级Worker
每一台机器都要升级kubelet
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl stop kubelet"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kubelet root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl start kubelet"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "kubelet --version"
Kubernetes v1.23.9
[root@k8s-master01 ~]#
每一台机器都要升级kube-proxy
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl stop kube-proxy"
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# scp kubernetes/server/bin/kube-proxy root@192.168.1.230:/usr/local/bin/
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# ssh root@192.168.1.230 "systemctl start kube-proxy"
[root@k8s-master01 ~]#
验证
[root@k8s-master01 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
k8s-master01 Ready <none> 57d v1.23.9
k8s-master02 Ready <none> 57d v1.23.9
k8s-master03 Ready <none> 57d v1.23.9
k8s-node01 Ready <none> 57d v1.23.9
k8s-node02 Ready <none> 57d v1.23.9
[root@k8s-master01 ~]#
[root@k8s-master01 ~]# kubectl version
Client Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.9", GitCommit:"c1de2d70269039fe55efb98e737d9a29f9155246", GitTreeState:"clean", BuildDate:"2022-07-13T14:26:51Z", GoVersion:"go1.17.11", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"23", GitVersion:"v1.23.9", GitCommit:"c1de2d70269039fe55efb98e737d9a29f9155246", GitTreeState:"clean", BuildDate:"2022-07-13T14:19:57Z", GoVersion:"go1.17.11", Compiler:"gc", Platform:"linux/amd64"}
[root@k8s-master01 ~]#