一、准备环境
所有节点操作：
1.配置好各节点hosts文件
2.关闭系统防火墙
3.关闭Selinux
setenforce 0
sed -i 's/^SELINUX=enforcing$/SELINUX=permissive/' /etc/selinux/config
4.关闭swap
5.在/etc/sysctl.conf中添加以下配置
cat <<EOF > /etc/sysctl.d/k8s.conf
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF
sysctl --system
6.配置yum源
docker yum源
cat >> /etc/yum.repos.d/docker.repo <<EOF
[docker-repo]
name=Docker Repository
baseurl=http://mirrors.aliyun.com/docker-engine/yum/repo/main/centos/7
enabled=1
gpgcheck=0
EOF
kubernetes yum源
cat >> /etc/yum.repos.d/kubernetes.repo <<EOF
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64/
enabled=1
gpgcheck=0
EOF
yum clean all
yum makecache
二、安装docker、kubeadm等
所有节点操作：
yum install -y docker --disableexcludes=docker-repo
yum install -y kubelet kubeadm kubectl --disableexcludes=kubernetes
systemctl enable docker && systemctl start docker
systemctl enable kubelet && systemctl start kubelet
三、kubeadm初始化集群
在master上操作：
kubeadm init --image-repository=registry.aliyuncs.com/google_containers --pod-network-cidr=10.244.0.0/16 --kubernetes-version=v1.13.0
输出应如下所示：
image.png
注意：请保存输出中的 kubeadm join …………一行命令
要使kubectl为非root用户工作，请运行以下命令，这些命令也是kubeadm init输出的一部分：
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
或者，如果是root用户，则可以运行：
export KUBECONFIG=/etc/kubernetes/admin.conf
四、安装flannel网络
在master上操作：
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/bc79dd1505b0c8681ece4de4c0d86c5cd2643275/Documentation/kube-flannel.yml
执行 kubectl get pod -n kube-system 查看pod状态，等待所有pod处于running状态即可。
五、添加计算节点
在计算节点上操作：
执行第三步中保存的 kubeadm join …………命令
在master上查看node添加状态：kubectl get nodes
六、部署dashboard
在master上操作：
1.下载yaml文件
wget
https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml
2.更改yaml'中的image地址
将kubernetes-dashboard.yaml中的镜像地址改为
registry.cn-qingdao.aliyuncs.com/wangxiaoke/kubernetes-dashboard-amd64:v1.10.0
3.安装
kubectl create -f kubernetes-dashboard.yaml
查看dashboard的POD是否正常启动，如果正常说明安装成功
[root@node1 ~]# kubectl get pods --namespace=kube-system
NAME READY STATUS RESTARTS AGE
coredns-576cbf47c7-kg8s9 1/1 Running 0 29h
coredns-576cbf47c7-st599 1/1 Running 0 29h
etcd-node1.ztpt.com 1/1 Running 0 29h
kube-apiserver-node1.ztpt.com 1/1 Running 0 29h
kube-controller-manager-node1.ztpt.com 1/1 Running 1 29h
kube-flannel-ds-amd64-79x9h 1/1 Running 0 27h
kube-flannel-ds-amd64-f9fls 1/1 Running 0 26h
kube-flannel-ds-amd64-q7kvx 1/1 Running 0 29h
kube-proxy-242zg 1/1 Running 0 27h
kube-proxy-5ntm5 1/1 Running 0 29h
kube-proxy-6pbrv 1/1 Running 0 26h
kube-scheduler-node1.ztpt.com 1/1 Running 1 29h
kubernetes-dashboard-77fd78f978-wzqjq 1/1 Running 0 5m7s
4、配置外网访问
修改service配置，将type: ClusterIP改成NodePort
kubectl edit service kubernetes-dashboard --namespace=kube-system
查看外网暴露端口
[root@node1 ~]# kubectl get service --namespace=kube-system
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kube-dns ClusterIP 10.96.0.10 <none> 53/UDP,53/TCP 47h
kubernetes-dashboard NodePort 10.101.221.220 <none> 443:32240/TCP 17h
5、创建dashboard admin-token
创建admin-token.yaml文件，文件内容如下：
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
name: admin
annotations:
rbac.authorization.kubernetes.io/autoupdate: "true"
roleRef:
kind: ClusterRole
name: cluster-admin
apiGroup: rbac.authorization.k8s.io
subjects:
- kind: ServiceAccount
name: admin
namespace: kube-system
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: admin
namespace: kube-system
labels:
kubernetes.io/cluster-service: "true"
addonmanager.kubernetes.io/mode: Reconcile
创建用户
kubectl create -f admin-token.yaml
获取登陆token
kubectl describe secret/$(kubectl get secret -nkube-system |grep admin|awk '{print $1}') -nkube-system
6.通过浏览器登陆dashboard
https://节点IP:bashboard暴露端口
认证方式选择口令，输入刚才获取到的token，即可登陆成功。
进入后就会看到如下界面
image.png
image.png
