一、下载安装Vmvare Fusion

下载地址：https://www.vmware.com/products/fusion/fusion-evaluation.html

二、下载Centos镜像

http://mirrors.aliyun.com/centos/7.9.2009/isos/x86_64/

http://mirrors.aliyun.com/centos/7.9.2009/isos/x86_64/CentOS-7-x86_64-Minimal-2207-02.iso?spm=a2c6h.25603864.0.0.37966aea6eLrlS

三、安装Centos

安装基础软件包

yum install net-tools vim -y

四、配置Vmware网络环境

# 修改网卡：静态地址
vi /etc/sysconfig/network-scripts/ifcfg-ens33
IPADDR: 静态IP地址
GATEWAY: 上图中子网ip，最后一位改为.2
NETMASK: 255.255.255.0
DNS1: 与网关一致

关闭selinux

sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config
重启系统
reboot now

升级系统,由centos7.6升级到centos7.9

yum update -y

关闭swap

# 临时关闭
swapoff -a
# 永久关闭
vim /etc/fstab
注释最后一行（有swap）

修改内核参数

modprobe br_netfilter

echo "modprobe br_netfilter" >> /etc/profile

cat > /etc/sysctl.d/k8s.conf <<EOF
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
EOF

sysctl -p /etc/sysctl.d/k8s.conf

关闭firewalld防火墙

systemctl stop firewalld ; systemctl disable firewalld

配置时间同步

 #安装ntpdate命令
yum install ntpdate -y
#跟网络时间做同步
ntpdate cn.pool.ntp.org
#把时间同步做成计划任务
crontab -e
* */1 * * * /usr/sbin/ntpdate   cn.pool.ntp.org
#重启crond服务
service crond restart

配置repo源

# 备份
cp -r /etc/yum.repos.d/ /etc/yum.repos.d.bak
# 设置国内阿里云yum仓库
curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
curl -o /etc/yum.repos.d/epel.repo http://mirrors.aliyun.com/repo/epel-7.repo

# 使用阿里云yum k8s仓库
cat <<EOF > /etc/yum.repos.d/kubernetes.repo
[kubernetes]
name=Kubernetes
baseurl=http://mirrors.aliyun.com/kubernetes/yum/repos/kubernetes-el7-x86_64
enabled=1
gpgcheck=0
repo_gpgcheck=0
gpgkey=http://mirrors.aliyun.com/kubernetes/yum/doc/yum-key.gpg
        http://mirrors.aliyun.com/kubernetes/yum/doc/rpm-package-key.gpg
EOF

重新建立yum索引

yum clean all && yum makecache && yum install -y epel-release

安装containerd

1.安装依赖
 yum install -y yum-utils device-mapper-persistent-data lvm2
 
2.添加yum源
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
 
3.安装containerd
yum install containerd -y

4.生成配置文件 
containerd config default > /etc/containerd/config.toml
 
5.替换 containerd 默认的 sand_box 镜像，编辑 /etc/containerd/config.toml
 k8s.gcr.io >> registry.aliyuncs.com/google_containers
 sandbox_image = "registry.aliyuncs.com/google_containers/pause:xxx"

6.设置开机自启动并且重启containerd
systemctl enable containerd && systemctl restart containerd

安装kubeadm并下载所需镜像

1.查询版本列表
yum list kubeadm --showduplicates | sort -r

2.安装指定版本
yum install -y kubelet-1.25.0-0 kubeadm-1.25.0-0 kubectl-1.25.0-0 --disableexcludes=kubernetes 

3.启动kubelet
systemctl enable --now kubelet && systemctl start kubelet

4.设置cri
crictl config runtime-endpoint unix:///run/containerd/containerd.sock
crictl config image-endpoint unix:///run/containerd/containerd.sock

5.列出所需镜像
kubeadm config images list --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.25.0

6.下载所需镜像
kubeadm config images pull --image-repository registry.aliyuncs.com/google_containers --kubernetes-version v1.25.0