sudo su
echo "NTP=ntp.aliyun.com" >>/etc/systemd/timesyncd.conf
echo "PollIntervalMinSec=36000" >>/etc/systemd/timesyncd.conf
echo "PollIntervalMinSec=72000" >>/etc/systemd/timesyncd.conf
systemctl restart systemd-timesyncd.service
timedatectl timesync-status
ubuntu 26.04
sudo su
echo "server 192.168.1.1 iburst" >/etc/chrony/sources.d/ntp.sources
# 或 echo "pool ntp.aliyun.com iburst" >/etc/chrony/sources.d/ntp.sources
chronyc reload sources
chronyc sources -v
