常见问题端口：Docker 常见问题解决

vim /etc/default/grub

GRUB_CMDLINE_LINUX="ipv6.disable=1 crashkernel=auto spectre_v2=retpoline rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet"

grub2-mkconfig -o /boot/grub2/grub.cfg
reboot

vim /etc/sysctl.conf
# 添加以下二行内容
net.bridge.bridge-nf-call-ip6tables = 1
net.bridge.bridge-nf-call-iptables = 1
# 然后使其生效
sysctl -p /etc/sysctl.conf
# 验证
docker info

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
 "registry-mirrors": ["https://sziho4ql.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker