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与时间同步的新方法是 systemd-timesyncd。 “ntpq -p”的替代品是什么？

tag-icon • tag-icon ubuntu systemd ntp
与时间同步的新方法是 systemd-timesyncd。 “ntpq -p”的替代品是什么？

有了ntp，我可以运行ntpq -p来查看时钟精度的当前状态。新服务有同等功能吗systemd-timesyncd？

我查看了该timedatectl命令，它给了我以下选项：

$ timedatectl --help
timedatectl [OPTIONS...] COMMAND ...

Query or change system time and date settings.

  -h --help                Show this help message
     --version             Show package version
     --no-pager            Do not pipe output into a pager
     --no-ask-password     Do not prompt for password
  -H --host=[USER@]HOST    Operate on remote host
  -M --machine=CONTAINER   Operate on local container
     --adjust-system-clock Adjust system clock when changing local RTC mode

Commands:
  status                   Show current time settings
  set-time TIME            Set system time
  set-timezone ZONE        Set system time zone
  list-timezones           Show known time zones
  set-local-rtc BOOL       Control whether RTC is in local time
  set-ntp BOOL             Enable or disable network time synchronization

也许有一个文件我可以查看？

我期待至少看到一些这样的数据：

$ sudo ntpq -p
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 monster         .INIT.          16 u    -   64    0    0.000    0.000   0.000
 ntp.ucdavis.edu 128.9.176.30     2 u    4   64    1   19.383  -19.799   0.000
 45.207.161.200  .INIT.          16 u    -   64    0    0.000    0.000   0.000
 time-b-wwv.nist .NIST.           1 u    3   64    1   46.721    2.287   0.000
 198.255.68.106  172.89.18.234    2 u    3   64    1   29.467    0.775   0.000
 euphoric.ca     128.233.154.245  2 u    3   64    1   55.963    2.732   0.000
 user-69-1-1-251 216.239.35.0     2 u    3   64    1  106.202   11.649   0.000
 tick.chi1.ntfo. 206.55.64.77     3 u    4   64    1   61.316   -3.556   0.000

答案1

当前版本timedatectl有两个子命令，可用于显示有关system-timesyncdSNTP（简单网络时间协议）客户端服务的信息。

SNTP 客户端比 NTP 客户端更简单、更简约，因为它绕过了各种步骤，不保存那么多同步信息，仅定期调整系统时间，因此不太准确。ntpq不适用于 SNTP。

# timedatectl timesync-status -a
       Server: 162.159.200.1 (0.fedora.pool.ntp.org)
Poll interval: 4min 16s (min: 32s; max 34min 8s)    
         Leap: normal                               
      Version: 4                                    
      Stratum: 3                                    
    Reference: A230E10                              
    Precision: 1us (-25)                            
Root distance: 24.711ms (max: 5s)                   
       Offset: -609us                               
        Delay: 36.883ms                             
       Jitter: 211.500ms                            
 Packet count: 384                                  
    Frequency: +10.723ppm

# timedatectl show-timesync -a
LinkNTPServers=
SystemNTPServers=
FallbackNTPServers=0.fedora.pool.ntp.org 1.fedora.pool.ntp.org 2.fedora.pool.ntp.org 3.fedora.pool.ntp.org
ServerName=0.fedora.pool.ntp.org
ServerAddress=162.159.200.1
RootDistanceMaxUSec=5s
PollIntervalMinUSec=32s
PollIntervalMaxUSec=34min 8s
PollIntervalUSec=4min 16s
NTPMessage={ Leap=0, Version=4, Mode=4, Stratum=3, Precision=-25, RootDelay=48.660ms, RootDispersion=381us, Reference=A230E10, OriginateTimestamp=Thu 2021-02-18 04:47:25 GMT, ReceiveTimestamp=Thu 2021-02-18 04:47:25 GMT, TransmitTimestamp=Thu 2021-02-18 04:47:25 GMT, DestinationTimestamp=Thu 2021-02-18 04:47:26 GMT, Ignored=no PacketCount=384, Jitter=211.500ms }
Frequency=702740
#

如果您想持续监控服务的状态systemd-timesyncd，可以使用timedatectl timesync-status --monitor。

systemd-timesyncd您可以使用--property=或选项显示服务的各个属性-p。例如：

# timedatectl show-timesync -p ServerName
ServerName=0.fedora.pool.ntp.org
#

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