2.所有节点安装docker,kubeadm,kubelet

安装docker
//删除系统中docker
yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine

//安装gcc,gcc-c++
yum -y install gcc
yum -y install gcc-c++

//安装yum-utils
yum install -y yum-utils

yum install -y yum-utils device-mapper-persistent-data lvm2

yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

//配置阿里云加速器
vim /etc/docker/daemon.json

{
"registry-mirrors": ["https://1i8lbk95.mirror.aliyuncs.com"]
}

//启动docker
systemctl start docker

//设置开机自启动
systemctl enable docker

添加阿里云yum软件源
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

安装kubeadm,kubelet和kubectl
(由于版本跟新频繁，指定版本号部署）：
yum install -y kubelet-1.23.0 kubeadm-1.23.0 kubectl-1.23.0 //安装
systemctl start kubelet //启动kubelet
systemctl enable kubelet //设置开机启动

在master主机上部署k8s-master
kubeadm init
--apiserver-advertise-address=192.168.178.171
--image-repository registry.aliyuncs.com/google_containers
--kubernetes-version v1.23.0
--service-cidr=10.96.0.0/12
--pod-network-cidr=10.244.0.0/16
--ignore-preflight-errors=all