yum源

cd /etc/yum.repos.d

mkdir backup

mv *.repo backup

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos8_base.repo

yum clean all

yum makecache

docker镜像

tee /etc/docker/daemon.json <<-'EOF'

{

    "registry-mirrors": ["https://mirror.baidubce.com"]

}

EOF

Kubernetes镜像

tee /etc/yum.repos.d/kubernetes.repo <<-'EOF'

[kubernetes]

name=kubernetes

baseurl=https://mirrors.tuna.tsinghua.edu.cn/kubernetes/yum/repos/kubernetes-el7-$basearch

enabled=1

EOF