#1.关闭防火墙
#永久关闭
systemctl disable firewalld
#临时关闭
systemctl stop firewalld

#2.关闭selinux
#永久关闭
sed -i 's/enforcing/disabled/' /etc/selinux/config
#临时关闭
setenforce 0

#3.关闭swap
#永久关闭
sed -ri 's/.*swap.*/#&/' /etc/fstab
#临时关闭
swapoff -a

#4.根据规划设计主机名
hostnamectl set-hostname <hostname>

#5.在master添加hosts
cat >> /etc/hosts << EOF
192.168.10.110 k8s-master
192.168.10.111 k8s-node1
192.168.10.112 k8s-node2
EOF

#6.将桥接的IPv4流量传递到iptables的链
cat > /etc/sysctl.d/k8s.conf << EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
EOF

#生效
sysctl --system

 7.时间同步

yum install ntpdate -y

ntpdate time.windows.com

8.安装dockerlinux centos7安装docker_a124550785的博客-CSDN博客第一步：打开docker官网https://docs.docker.com/engine/install/centos/进入官网点击安装并下载第一步：第三步：第四步：执行linux命令1.卸载系统自带的docker$ sudo yum remove docker \ docker-client \ docker-client-latest \ docker-c..https://blog.csdn.net/a124550785/article/details/115322743配置阿里镜像

cat > /etc/docker/daemon.json << EOF
{
    "registry-mirrors": ["https://b9pmyelo.mirror.aliyuncs.com"]
}
EOF

9.设置kubernetes的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
repo_gpgcheck=0
gpgkey=https://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
https://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

10.安装kubelet、kubeadm、kubectl

yum install -y kubelet-1.18.0 kubeadm-1.18.0 kubectl-1.18.0

systemctl enable kubelet

11.部署Kubernetes Master，在Master服务器上执行

kubeadm init \
--apiserver-advertise-address=192.168.10.110 \
--image-repository registry.aliyuncs.com/google_containers \
--kubernetes-version v1.18.0 \
--service-cidr=10.96.0.0/12 \
--pod-network-cidr=10.244.0.0/16

初始化完成后，有提示操作说明，以下为示例，执行代码按实际操作中返回的展示代码执行：

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 192.168.10.110:6443 --token j6sb8s.lezund2frja2sfwz \
    --discovery-token-ca-cert-hash sha256:cd2d9626e7f255d0c69320d45c13ff9415a11f7ec00658951b311b53e77309d0 

12.设置kubectl（在Master服务器执行）

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

查看节点

kubectl get nodes

13.在node服务器上执行以下代码，将节点加入到集群中

kubeadm join 192.168.10.110:6443 --token j6sb8s.lezund2frja2sfwz \
    --discovery-token-ca-cert-hash sha256:cd2d9626e7f255d0c69320d45c13ff9415a11f7ec00658951b311b53e77309d0

其中的token有效期为24小时，过期后重新生成（在Master服务器执行）：

kubeadm token create --print-join-command

14.部署CNI网络插件（在Master服务器执行）

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

kubectl get pods -n kube-system

15.测试Kubernetes集群（在Master服务器执行）

kubectl create deployment nginx --image=nginx
kubectl expose deployment nginx --port=80 --type=NodePort
kubectl get pod,svc