環境介紹:

1.首先在master以及node上安裝kubectl

curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.7.5/bin/linux/amd64/kubectl
chmod +x ./kubectl
sudo mv ./kubectl /usr/local/bin/kubectl

2.安裝kubeadm (在master)

sudo apt-get install -y apt-transport-https
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
sudo bash -c 'cat <<EOF >/etc/apt/sources.list.d/kubernetes.list
deb http://apt.kubernetes.io/ kubernetes-xenial main
EOF'
sudo apt-get update && sudo apt-get install -y kubelet kubeadm

3.使用kubeadm初始化kubernetes (在master)

sudo kubeadm init --kubernetes-version=v1.8.0 --pod-network-cidr 10.244.0.0/16

4.複製設定檔 (在master)

mkdir -p $HOME/.kube
sudo cp /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

5.等待一段時間後,使用下列指令確認一下pod部署狀態 (在master).

kubectl get pods --all-namespaces -o wide

6.建立網路 (在master)

kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

並等待一段時間後,使用下列指令確認一下pod部署狀態 (在master).

kubectl get pods --all-namespaces -o wide

7.加入 dashboard-admin, 參考來源 (在master)

cat <<EOF > dashboard-admin.yaml
{
  "apiVersion": "rbac.authorization.k8s.io/v1beta1", 
  "kind": "ClusterRoleBinding", 
  "metadata": {
    "name": "kubernetes-dashboard",
    "labels": {
      "k8s-app": "kubernetes-dashboard"
    }
  },
  "roleRef": {
    "apiGroup": "rbac.authorization.k8s.io", 
    "kind": "ClusterRole", 
    "name": "cluster-admin"
  }, 
  "subjects": [
    {
      "kind": "ServiceAccount", 
      "name": "kubernetes-dashboard",
      "namespace": "kube-system"
    }
  ]
}
EOF
kubectl create -f dashboard-admin.yaml
rm dashboard-admin.yaml
kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml

並等待一段時間後,使用下列指令確認一下pod部署狀態 (在master).

kubectl get pods --all-namespaces -o wide

8.建立proxy,讓瀏覽器可以開始dashboard (在master)

nohup kubectl proxy --address 0.0.0.0 --accept-hosts '.*' >/dev/null 2>&1 &

9.開啟kubenetes dashboard (在10.1.0.0/16的網域內)

http://10.1.200.100:8001/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/

10.加入Nginx Backend (在master)

kubectl apply -f https://raw.githubusercontent.com/kubernetes/ingress/master/examples/deployment/nginx/default-backend.yaml

11.加入 Ingress RBAC 認證 (在master)

curl -O https://raw.githubusercontent.com/kubernetes/ingress/master/examples/rbac/nginx/nginx-ingress-controller-rbac.yml
## 修改 namespace
sed -i 's/namespace: nginx-ingress/namespace: kube-system/g' nginx-ingress-controller-rbac.yml
## 匯入yaml檔案
kubectl apply -f nginx-ingress-controller-rbac.yml
rm -r nginx-ingress-controller-rbac.yml

12.加入 Ingress Controller (在master)

curl -O https://raw.githubusercontent.com/kubernetes/ingress/master/examples/daemonset/nginx/nginx-ingress-daemonset.yaml
## 修改 namespace
sed -i 's/terminationGracePeriodSeconds/hostNetwork: true\n      serviceAccountName: nginx-ingress-serviceaccount\n      terminationGracePeriodSeconds/g' nginx-ingress-daemonset.yaml
## 匯入yaml檔案
kubectl apply -f nginx-ingress-daemonset.yaml
rm nginx-ingress-daemonset.yaml
kubectl get daemonset -n kube-system nginx-ingress-lb

13.加入其他的node (在master)

token=$(sudo kubeadm token list | grep authentication,signing | awk '{print $1}')
ssh 10.1.200.101 "sudo kubeadm join --token $token 10.1.200.100:6443"
ssh 10.1.200.102 "sudo kubeadm join --token $token 10.1.200.100:6443"
ssh 10.1.200.103 "sudo kubeadm join --token $token 10.1.200.100:6443"