初始化docker

sudo yum remove docker \

                  docker-client \

                  docker-client-latest \

                  docker-common \

                  docker-latest \

                  docker-latest-logrotate \

                  docker-logrotate \

                  docker-selinux \

                  docker-engine-selinux \

                  docker-engine

sudo yum install -y yum-utils

sudo yum-config-manager    --add-repo    https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

sudo sed -i 's/download.docker.com/mirrors.aliyun.com\/docker-ce/g' /etc/yum.repos.d/docker-ce.repo

sudo yum install docker-ce docker-ce-cli containerd.io

vi /etc/firewalld/firewalld.conf

# FirewallBackend=nftables

FirewallBackend=iptables

sudo tee -a /etc/sysctl.conf <<-EOF

net.bridge.bridge-nf-call-ip6tables = 1

net.bridge.bridge-nf-call-iptables = 1

EOF

sudo sysctl -p

sudo mkdir -p /etc/docker

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

{

  "registry-mirrors": ["https://8vklp8q1.mirror.aliyuncs.com"]

}

EOF

sudo systemctl daemon-reload

sudo systemctl restart docker