與時間同步的新方法是 systemd-timesyncd。ntpq -p 的替代品是什麼？

使用ntp，我可以執行ntpq -p以查看時鐘精度的目前狀態。新服務是否有等價物systemd-timesyncd？

我查看了timedatectl命令，它為我提供了以下選項：

$ 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

也許我可以查看某個文件？

我希望至少能看到一些這樣的數據：

$ 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

目前版本timedatectl有兩個子命令，可用於顯示有關system-timesyncdSNTP（簡單網路時間協議）客戶端服務的資訊。

SNTP 客戶端比 NTP 客戶端更簡單、更簡約，因為它繞過了各個步驟，沒有保存太多同步資訊，只是定期調整系統時間，因此準確性較低。ntpq不適用於 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
#

如果要持續監控systemd-timesyncd服務的狀態，可以使用timedatectl timesync-status --monitor.

systemd-timesyncd您可以使用--property=or-p選項顯示服務的各個屬性。例如：

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

引用自：https://unix.stackexchange.com/questions/635088