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NTP 配置

约 119 个字 34 行代码 预计阅读时间 1 分钟

查看服务状态

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systemctl status systemd-timesyncd.service

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● systemd-timesyncd.service - Network Time Synchronization
     Loaded: loaded (/lib/systemd/system/systemd-timesyncd.service; enabled; vendor preset: enabled)
     Active: active (running) since Fri 2022-04-15 11:26:06 CST; 4min 21s ago
       Docs: man:systemd-timesyncd.service(8)
   Main PID: 86012 (systemd-timesyn)
     Status: "Initial synchronization to time server xx.x.x.xx:123 (xxxxxx)."
      Tasks: 2 (limit: 19105)
     Memory: 1.5M
     CGroup: /system.slice/systemd-timesyncd.service
             └─86012 /lib/systemd/systemd-timesyncd

Apr 15 11:26:06 hcm0153 systemd[1]: Starting Network Time Synchronization...
Apr 15 11:26:06 hcm0153 systemd[1]: Started Network Time Synchronization.
Apr 15 11:27:57 hcm0153 systemd-timesyncd[86012]: Initial synchronization to time server xx.x.x.xx (xxxxxx).

查看时间状态

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timedatectl

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               Local time: Fri 2022-04-15 11:31:32 CST
           Universal time: Fri 2022-04-15 03:31:32 UTC
                 RTC time: Fri 2022-04-15 03:31:32
                Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no

配置文件

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/etc/systemd/timesyncd.conf

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[Time]
#NTP=
#FallbackNTP=ntp.ubuntu.com
#RootDistanceMaxSec=5
#PollIntervalMinSec=32
#PollIntervalMaxSec=2048

更改 NTP 服务器

  1. 编辑 /etc/systemd/timesyncd.conf，取消 NTP、FallbackNTP 的注释，设置服务器地址。如果有多个，用空格隔开。
  2. 重启服务： 
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    systemctl restart systemd-timesyncd.service

问题解决

如果日志出现 Server has too large root distance. Disconnecting.

编辑 /etc/systemd/timesyncd.conf，取消 RootDistanceMaxSec 的注释，设置一个比较大的数。保存后重启服务。

参考资料

Linux 时间同步 systemd-timesyncd 介绍_ruth13156402807 的博客-CSDN 博客_linux timesync