升級系統，安裝常用的rpm

yum -y update
yum -y install wget net-tools nfs-utils lrzsz gcc gcc-c++ make cmake\
libxml2-devel openssl-devel curl curl-devel unzip sudo ntp libaio-devel\
wget vim ncurses-devel autoconf automake zlib-devel  python-devel\
epel-release lrzsz  openssh-server socat  ipvsadm conntrack bind-utils
yum -y install yum-utils 
 
device-mapper-persistent-data lvm2

配置k8s 的yum源

cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=https://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
EOF

配置docker 的yum源，及檢視支援的docker版本

yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
yum list docker-ce --showduplicates |
 
sort -r 

下載18.09版本的docker

yum clean all
yum makecache fast
yum install -y docker-ce-18.09.9-3.el7
systemctl enable docker && systemctl start docker
systemctl status docker 

安裝k8s 1.16.4

#在k8s-master和k8s-node上安裝kubeadm和kubelet
#kubelet設定開機啟動
yum install -y kubeadm-1.16.4-0.x86_64 kubelet-1.16.4-0.x86_64
systemctl enable kubelet
 

手動上傳docker映象到k8s_master和k8s_node節點

正式環境一般都是配置docker harbor 映象倉庫

cd /usr/local/src/
http://download.zhufunin.com/k8s_1.16/addon.tar.gz
http://download.zhufunin.com/k8s_1.16/apiserver_1_16.tar.gz
http://download.zhufunin.com/k8s_1.16/cordns_1_6_2.tar.gz
http://download.zhufunin.com/k8s_1.16/etcd_3_3_15.tar.gz
http://download.zhufunin.com/k8s_1.16/kube-controller-manager_1_16.tar.gz
http://download.zhufunin.com/k8s_1.16/kube-proxy_1_16.tar.gz
http://download.zhufunin.com/k8s_1.16/kube-scheduler_1_16.tar.gz
http://download.zhufunin.com/k8s_1.16/kubernetes-dashboard_1_10.tar.gz
http://download.zhufunin.com/k8s_1.16/metrics-server-amd64_0_3_1.tar.gz
http://download.zhufunin.com/k8s_1.16/pause_3_1.tar.gz
http://download.zhufunin.com/k8s_1.16/traefik_1_7_9.tar.gz

#手動解壓映象
docker load -i  apiserver_1_16.tar.gz
docker load -i  cordns_1_6_2.tar.gz 
docker load -i  etcd_3_3_15.tar.gz
docker load -i   kube-controller-manager_1_16.tar.gz 
docker load -i  kube-proxy_1_16.tar.gz 
docker load -i  kubernetes-dashboard_1_10.tar.gz
docker load -i   kube-scheduler_1_16.tar.gz 
docker load -i  metrics-server-amd64_0_3_1.tar.gz
docker load -i  pause_3_1.tar.gz 
docker load -i traefik_1_7_9.tar.gz
docker load -i  addon.tar.gz

在k8s_master節點初始化k8s叢集

#192.168.124.16為master的IP地址，請根據自己的情況修改
kubeadm init --apiserver-advertise-address 192.168.124.16 --kubernetes-version=v1.16.4 --pod-network-cidr=10.244.0.0/16

在k8s-master節點執行如下，這樣才能有許可權操作k8s資源

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

把k8s-node節點加入到k8s叢集，在node節點操作

#在slave伺服器上，跑如下命令
#192.168.124.16為master的IP
#token請根據自己的情況做相應的修改
kubeadm join 192.168.124.16:6443 --token fegy3d.0c2ovmf4unkpbssk \
    --discovery-token-ca-cert-hash sha256:fde13ccab75a1da4a0bedaa9a66c6ed82eacae63c98f22961f4cea12f3b8c589 

在k8s-master節點檢視k8s的組員，都是notready

kubectl get nodes

在k8s-master節點安裝calico網路外掛

kubectl apply -f calico.yaml

在k8s-master節點檢視STATUS狀態, 應該都是ready狀態

kubectl get nodes

在k8s-master節點安裝dashboard介面

kubectl apply -f kubernetes-dashboard.yaml

在k8s-master節點安裝metrics監控外掛

kubectl apply -f metrics.yaml 

上面元件都安裝之後，kubectl get pods -n kube-system，檢視元件安裝是否正常，STATUS狀態是Running，說明元件正常

kubectl get pods -n kube-system