kubeadm init --kubernetes-version=v1.14.1 --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
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 192.168.4.130:6443 --token 911xit.xkp2gfxbvf5wuqz7 \
--discovery-token-ca-cert-hash sha256:23db3094dc9ae1335b25692717c40e24b1041975f6a43da9f43568f8d0dbac72
kubectl create -f kube-flannel.yml
网络就绪后，节点的状态会变为ready
[root@master1 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
master1 Ready master 11m v1.14.1
6. kubeadm join 加入node节点
6.1 node节点加入集群
使用之前kubeadm init 生产的join命令，加入成功后，回到master节点查看是否成功
[root@node1 ~]# kubeadm join 192.168.4.130:6443 --token 911xit.xkp2gfxbvf5wuqz7 \
> --discovery-token-ca-cert-hash sha256:23db3094dc9ae1335b25692717c40e24b1041975f6a43da9f43568f8d0dbac72
[root@master1 ~]# kubectl get node
NAME STATUS ROLES AGE VERSION
master1 Ready master 12m v1.14.1
node1 Ready <none> 9m52s v1.14.1
至此，集群已经部署完成。
6.2 如果出现x509这个报错
此处未更新，沿用1.12
如果有报错才需要做这一步，不然不需要。
这是因为master节点缺少KUBECONFIG变量
[discovery] Failed to request cluster info, will try again: [Get https://192.168.1.181:6443/api/v1/namespaces/kube-public/configmaps/cluster-info: x509: certificate has expired or is not yet valid]
[root@master1 kubernetes1.10]# kubeadm token list
TOKEN TTL EXPIRES USAGES DESCRIPTION EXTRA GROUPS
wct45y.tq23fogetd7rp3ck 22h 2018-04-26T21:38:57+08:00 authentication,signing The default bootstrap token generated by 'kubeadm init'. system:bootstrappers:kubeadm:default-node-token
root@master1:/var/lib/kubelet# kubectl get po -o wide
NAME READY STATUS RESTARTS AGE IP NODE
nginx-8586cf59-6zw9k 1/1 Running 0 9m 10.244.3.3 node2
nginx-8586cf59-jk5pc 0/1 ContainerCreating 0 9m <none> node1
nginx-8586cf59-vm9h4 0/1 ContainerCreating 0 9m <none> node1
nginx-8586cf59-zjb84 1/1 Running 0 9m 10.244.3.2 node2
root@node1:~# journalctl -u kubelet
failed: rpc error: code = Unknown desc = NetworkPlugin cni failed to set up pod "nginx-8586cf59-rm4sh_default" network: failed to set bridge addr: "cni0" already has an IP address different from 10.244.2.1/24
12252 cni.go:227] Error while adding to cni network: failed to set bridge addr: "cni0" already
重置kubernetes服务，重置网络。删除网络配置，link
kubeadm reset
systemctl stop kubelet
systemctl stop docker
rm -rf /var/lib/cni/
rm -rf /var/lib/kubelet/*
rm -rf /etc/cni/
ifconfig cni0 down
ifconfig flannel.1 down
ifconfig docker0 down
ip link delete cni0
ip link delete flannel.1
systemctl start docker
