ntpdate:no server suitable for synchronization found

时间:2021-07-06 08:27:04

Question:

  在使用ntpdate同步时间时,出现了no server suitable for synchronization found的报错。

  通过ntpdate -d s2m.time.edu.cn 使用debug模式没有出现异常。

Answer:

  解决办法是,使用ntpdate -ubv s2m.time.edu.cn 可以正常同步了。主要是-u选项的作用

  -u:Direct ntpdate to use an unprivileged port for outgoing packets. This is most useful when behind a firewall that blocks incoming traffic to privileged ports, and you want to synchronize with hosts beyond the firewall. Note that the -d option always uses unprivileged ports.