Kubernetes 1.17.1已经正式发布,快速升级(含国内镜像快速下载链接)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。
- Kubernetes 1.17.0 已发布
- 使用kubeadm部署高可用Kubernetes 1.17.0
- Kubernetes 1.17.0管理界面Dashboard 2
- 设置Kubernetes的Master节点运行应用pod
- Kubernetes pod中systemctl状态探针失败问题
- 运用Jupyter Notebook进行系统管理
- 将Jupyter/JupyterHub/JupyterLab运行为系统服务
- 快速设置JupyterHub for K8s
- 在JupyterHub for K8s使用GlusterFS存储
1、升级kubeadm/kubectl/kubelet版本
sudo apt install kubeadm=1.17.1-00 kubectl=1.17.1-00 kubelet=1.17.1-00
查看该版本的容器镜像版本:
kubeadm config images list
输出如下:
~# kubeadm config images list
k8s.gcr.io/kube-apiserver:v1.17.1
k8s.gcr.io/kube-controller-manager:v1.17.1
k8s.gcr.io/kube-scheduler:v1.17.1
k8s.gcr.io/kube-proxy:v1.17.1
k8s.gcr.io/pause:3.1
k8s.gcr.io/etcd:3.4.3-0
k8s.gcr.io/coredns:1.6.5
2、拉取容器镜像
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,拉取还是比较快的。
echo ""
echo "=========================================================="
echo "Pull Kubernetes v1.17.1 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:v1.17.1
docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.17.1
docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.17.1
docker pull ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.17.1
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:v1.17.1 k8s.gcr.io/kube-apiserver:v1.17.1
docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-scheduler:v1.17.1 k8s.gcr.io/kube-scheduler:v1.17.1
docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-controller-manager:v1.17.1 k8s.gcr.io/kube-controller-manager:v1.17.1
docker tag ${MY_REGISTRY}/k8s-gcr-io-kube-proxy:v1.17.1 k8s.gcr.io/kube-proxy:v1.17.1
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 v1.17.1 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,然后执行。
3、升级Kubernetes集群
全新安装:
#指定IP地址,1.17.1版本:
sudo kubeadm init --kubernetes-version=v1.17.1 --apiserver-advertise-address=10.1.1.199 --pod-network-cidr=10.244.0.0/16
先查看一下需要升级的各个组件的版本。
使用kubeadm upgrade plan ,输出的版本升级信息如下:
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 v1.17.1
8 x v1.17.1 v1.17.1
Upgrade to the latest version in the v1.17 series:
COMPONENT CURRENT AVAILABLE
API Server v1.17.0 v1.17.1
Controller Manager v1.17.0 v1.17.1
Scheduler v1.17.0 v1.17.1
Kube Proxy v1.17.0 v1.17.1
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 v1.17.1
确保上面的容器镜像已经下载(如果没有提前下载,可能被网络阻隔导致挂起),然后执行升级:
kubeadm upgrade -y apply v1.17.1
看到下面信息,就OK了。
[upgrade/successful] SUCCESS! Your cluster was upgraded to "v1.17.1". Enjoy!
然后,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) $HOME/.kube/config
就可以使用 kubectl version 来查看状态和 kubectl cluster-info 查看服务地址。
4、工作节点的升级
每个工作节点需要拉取上面对应版本的镜像,以及安装kubelet的对应版本。
检查版本:
~$ kubectl version
查看Pod信息:
kubectl get pod --all-namespaces
完成。
来源:oschina
链接:https://my.oschina.net/u/2306127/blog/3159395