kubeadm reset复制
[root@centos01 opt]# kubeadm init --apiserver-advertise-address 192.168.109.130 --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.27.1 --pod-network-cidr=10.244.0.0/16 ... ... ... Your Kubernetes control-plane has initialized successfully! To start using your cluster, you need to run the following as a regular user: mkdir -p $HOME/.kube sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config sudo chown $(id -u):$(id -g) $HOME/.kube/config Alternatively, if you are the root user, you can run: export KUBECONFIG=/etc/kubernetes/admin.conf You should now deploy a pod network to the cluster. Run "kubectl apply -f [podnetwork].yaml" with one of the options listed at: https://kubernetes.io/docs/concepts/cluster-administration/addons/ Then you can join any number of worker nodes by running the following on each as root: kubeadm join 192.168.109.130:6443 --token osh87v.zvo010kamsr8esmp \ --discovery-token-ca-cert-hash sha256:ff4607c7c194e9f756b1eb509e64d2d926b5f8f9556a85c3c14a2d25add28230复制
其中，
–apiserver-advertise-address：通告侦听地址
–image-repository：指定镜像地址使用阿里云的，默认会使用谷歌镜像
–kubernetes-version：指定当前的kubernetes的版本
–pod-network-cidr=10.244.0.0/16：flannel网络的固定地址范围
仔细阅读kubeadm init执行的结果，根据提示，还需要进行3步操作
1.笔者用的是root用户，仅在master节点执行
[root@centos01 opt]# vim /etc/profile
#在最后一行增加
export KUBECONFIG=/etc/kubernetes/admin.conf
复制生效环境变量
[root@centos01 opt]# source /etc/profile复制
2.安装网络插件，可以选择calico或flannel，这里选择安装flannel，仅在master节点执行
下载安装文件
[root@centos01 opt]# wget https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml复制
修改配置
[root@centos01 opt]# vim kube-flannel.yml
#修改Network项的值，改为和--pod-network-cidr一样的值
"Network": "10.244.0.0/16"
#由于有时国内网络的问题，需要修改image的地址，把所有的docker.io改为dockerproxy.com
#共需要修改3处，两个值
image: dockerproxy.com/flannel/flannel:v0.22.0
image: dockerproxy.com/flannel/flannel-cni-plugin:v1.1.2
复制安装网络插件
[root@centos01 opt]# kubectl apply -f kube-flannel.yml复制
验证安装
[root@centos01 opt]# kubectl get pods -n kube-flannel
NAME READY STATUS RESTARTS AGE
kube-flannel-ds-dfngh 1/1 Running 17 (13m ago) 6d1h
kube-flannel-ds-qll8g 1/1 Running 12 (13m ago) 6d1h
复制3.其他节点加入集群，非master节点都执行
[root@centos02 opt]# kubeadm join 192.168.109.130:6443 --token osh87v.zvo010kamsr8esmp --discovery-token-ca-cert-hash sha256:ff4607c7c194e9f756b1eb509e64d2d926b5f8f9556a85c3c14a2d25add28230复制
[root@centos01 opt]# kubectl get nodes NAME STATUS ROLES AGE VERSION centos01 Ready control-plane 134m v1.27.1 centos02 Ready <none> 133m v1.27.1复制
[root@centos01 opt]# kubectl get pods -n kube-system NAME READY STATUS RESTARTS AGE coredns-7bdc4cb885-l4vs2 1/1 Running 0 9m3s coredns-7bdc4cb885-wzc8x 1/1 Running 0 9m3s etcd-centos01 1/1 Running 0 9m18s kube-apiserver-centos01 1/1 Running 0 9m18s kube-controller-manager-centos01 1/1 Running 0 9m19s kube-proxy-m92hr 1/1 Running 0 28s kube-proxy-pv4hw 1/1 Running 0 9m3s kube-scheduler-centos01 1/1 Running 0 9m18s复制
重启一遍所有服务器节点，有可能会暴露出来隐藏的问题，再次验证以上结果，仍然正常。
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