k8s学习笔记-升级安装指南

1.配置kubernetes安装源（已配置kubernetes源，此处跳过）

2.升级（各个节点都要运行）

yum list --showduplicates kubeadm --disableexcludes=kubernetes

yum update kubelet kubeadm kubectl docker-ce -y

验证是不是要升级的版本

kubeadm version

查看需要的镜像

kubeadm config images list 

这里通过脚本提前下载好

vim k8s-1.14.1.sh 

MY_REGISTRY=registry.cn-hangzhou.aliyuncs.com/openthings

## 拉取镜像

docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-apiserver:v1.14.1

docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.14.1

docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.14.1

docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.14.1

docker pull ${MY_REGISTRY}/k8s-gcr-io-etcd:3.3.10

docker pull ${MY_REGISTRY}/k8s-gcr-io-pause:3.1

docker pull ${MY_REGISTRY}/k8s-gcr-io-coredns:1.3.1

## 添加Tag

docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-apiserver:v1.14.1 k8s.gcr.io/kube-apiserver:v1.14.1

docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.14.1 k8s.gcr.io/kube-scheduler:v1.14.1

docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.14.1 k8s.gcr.io/kube-controller-manager:v1.14.1

docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.14.1 k8s.gcr.io/kube-proxy:v1.14.1

docker tag ${MY_REGISTRY}/k8s-gcr-io-etcd:3.3.10 k8s.gcr.io/etcd:3.3.10

docker tag ${MY_REGISTRY}/k8s-gcr-io-pause:3.1 k8s.gcr.io/pause:3.1

 

docker tag ${MY_REGISTRY}/k8s-gcr-io-coredns:1.3.1 k8s.gcr.io/coredns:1.3.1

 

如果是重要的业务，可以备份一下相关的配置文件

在master节点

kubeadm upgrade plan

 kubeadm upgrade apply v1.14.1

upgrade/successful] SUCCESS! Your cluster was upgraded to "v1.14.1". Enjoy! 出现这个表示升级成功

 

systemctl daemon-reload

 

systemctl restart kubelet

 

然后查看是否升级成功

kubectl get node -o wide 

将控制节点设置为不可调度

kubectl drain $NODE --ignore-daemonsets

逐一将除控制节点以外的其他需要升级的节点设置为不可调度

kubectl cordon $NODENAME

kubectl drain $NODENAME

在除控制节点的所有节点上逐一执行如下命令升级（注意执行如下命令前，需要先升级程序包）

kubeadm upgrade node config --kubelet-version v1.14.1

重新启动升级后节点的kubelet服务

systemctl daemon-reload

systemctl restart kubelet

11、恢复节点为可调度（在控制节点上操作）

kubectl uncordon $NODE

参考文档：

https://blog.youkuaiyun.com/oSuiFengZou/article/details/88891659

https://juejin.im/post/5c9ce517e51d452b837c959e

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade-1-14/

 

转载于:https://www.cnblogs.com/centos-python/articles/10823795.html