修改计算机名 nano /etc/hostname，同时别忘了修改host nano /etc/hosts
nano /etc/hostname
nano /etc/hosts
timedatectl set-timezone Asia/Shanghai
timedatectl
sudo apt update sudo apt install chrony
sudo systemctl start chrony sudo systemctl enable chrony
验证是否成功：
systemctl status chrony
查看时间源状态：
chronyc sources
