Kubernetes 1.17.2已经正式发布,快速升级(含国内镜像快速下载连接)包括升级kubeadm/kubectl/kubelet版本、拉取镜像、升级Kubernetes集群三个主要步骤。参考《Ubuntu上软件锁定版本不更新》安装特定DockerCE版本。git
sudo apt install kubeadm=1.17.2-00 kubectl=1.17.2-00 kubelet=1.17.2-00
查看该版本的容器镜像版本:github
kubeadm config images list
输出以下:docker
~# kubeadm config images list k8s.gcr.io/kube-apiserver:v1.17.2 k8s.gcr.io/kube-controller-manager:v1.17.2 k8s.gcr.io/kube-scheduler:v1.17.2 k8s.gcr.io/kube-proxy:v1.17.2 k8s.gcr.io/pause:3.1 k8s.gcr.io/etcd:3.4.3-0 k8s.gcr.io/coredns:1.6.5
原始的kubernetes镜像文件在gcr上,不能直接下载。我给镜像到了阿里云的杭州机房的容器仓库里,拉取仍是比较快的。shell
echo "" echo "==========================================================" echo "Pull Kubernetes v1.17.2 Images from aliyuncs.com ......" echo "==========================================================" echo "" MY_REGISTRY=registry.cn-hangzhou.aliyuncs.com/openthings ## 拉取镜像 docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-apiserver:v1.17.2 docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.17.2 docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.17.2 docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.17.2 docker pull ${MY_REGISTRY}/k8s-gcr-io-etcd:3.4.3-0 docker pull ${MY_REGISTRY}/k8s-gcr-io-pause:3.1 docker pull ${MY_REGISTRY}/k8s-gcr-io-coredns:1.6.5 ## 添加Tag docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-apiserver:v1.17.2 k8s.gcr.io/kube-apiserver:v1.17.2 docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.17.2 k8s.gcr.io/kube-scheduler:v1.17.2 docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.17.2 k8s.gcr.io/kube-controller-manager:v1.17.2 docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.17.2 k8s.gcr.io/kube-proxy:v1.17.2 docker tag ${MY_REGISTRY}/k8s-gcr-io-etcd:3.4.3-0 k8s.gcr.io/etcd:3.4.3-0 docker tag ${MY_REGISTRY}/k8s-gcr-io-pause:3.1 k8s.gcr.io/pause:3.1 docker tag ${MY_REGISTRY}/k8s-gcr-io-coredns:1.6.5 k8s.gcr.io/coredns:1.6.5 echo "" echo "==========================================================" echo "Pull Kubernetes v1.17.2 Images FINISHED." echo "into registry.cn-hangzhou.aliyuncs.com/openthings, " echo " by openthings@https://my.oschina.net/u/2306127." echo "==========================================================" echo ""
保存为shell脚本,而后执行。api
全新安装:网络
#指定IP地址,1.17.2版本: sudo kubeadm init --kubernetes-version=v1.17.2 --apiserver-advertise-address=10.1.1.199 --pod-network-cidr=10.244.0.0/16
先查看一下须要升级的各个组件的版本。app
使用kubeadm upgrade plan ,输出的版本升级信息以下:阿里云
Components that must be upgraded manually after you have upgraded the control plane with 'kubeadm upgrade apply': COMPONENT CURRENT AVAILABLE Kubelet 1 x v1.17.0 v1.17.2 8 x v1.17.1 v1.17.2 Upgrade to the latest version in the v1.17 series: COMPONENT CURRENT AVAILABLE API Server v1.17.1 v1.17.2 Controller Manager v1.17.1 v1.17.2 Scheduler v1.17.1 v1.17.2 Kube Proxy v1.17.1 v1.17.2 CoreDNS 1.6.5 1.6.5 Etcd 3.4.3 3.4.3-0 You can now apply the upgrade by executing the following command: kubeadm upgrade apply v1.17.2
确保上面的容器镜像已经下载(若是没有提早下载,可能被网络阻隔致使挂起),而后执行升级:spa
kubeadm upgrade -y apply v1.17.2
看到下面信息,就OK了。.net
[upgrade/successful] SUCCESS! Your cluster was upgraded to "v1.17.2". Enjoy!
而后,配置当前用户环境:
mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config
就能够使用 kubectl version 来查看状态和 kubectl cluster-info 查看服务地址。
每一个工做节点须要拉取上面对应版本的镜像,以及安装kubelet的对应版本。
检查版本:
~$ kubectl version
查看Pod信息:
kubectl get pod --all-namespaces
完成。