kubadm join 加入 命令忘记怎么办？

使用算法计算出来
openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt |openssl rsa -pubin -outform der |openssl dgst -sha256 -hex

docker 镜像源

{
    "registry-mirrors": [
        "http://hub-mirror.c.163.com",
        "https://docker.mirrors.ustc.edu.cn",
        "https://registry.docker-cn.com"
    ]
}

安装docker yum源报错container-selinux >= 2:2.74

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
yum install epel-release
yum makecache
yum install container-selinux
或
wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
然后直接安装