设置时区

# 查看当前时区
timedatectl

# 设置时区为上海
sudo timedatectl set-timezone Asia/Shanghai

设置 DNS

Ubuntu

cd /etc/netplan
ls
vim 50-cloud-init.yaml

# 应用
sudo netplan apply
systemd-resolve --status

参考：https://askubuntu.com/questions/1237685/changing-the-dns-servers-ubuntu-server-20-04-arm64-raspi