chronyc命令来自于英文词组“chrony command-line”的缩写,其功能是用于设置时间与时钟服务器的同步工作。chrony是一个用于保持系统时间与NTP时钟服务器同步的服务,常见的是chronyd是其守护进程的名称,而chronyc命令则是用户的配置工具。
语法格式:chronyc [参数]
常用参数:
sources |
时间同步源 |
sourcestats |
时间同步源状态 |
-v |
详细信息模式 |
参考实例
查看当前系统的时间同步源信息:
[root@linuxcool ~]# chronyc sources -v
.-- Source mode '^' = server, '=' = peer, '#' = local clock.
/ .- Source state '*' = current best, '+' = combined, '-' = not combined,
| / 'x' = may be in error, '~' = too variable, '?' = unusable.
|| .- xxxx [ yyyy ] +/- zzzz
|| Reachability register (octal) -. | xxxx = adjusted offset,
|| Log2(Polling interval) --. | | yyyy = measured offset,
|| \ | | zzzz = estimated error.
|| | | \
MS Name/IP address Stratum Poll Reach LastRx Last sample
===============================================================================
^- 120.25.115.20 2 10 337 31m -78us[ -49us] +/- 17ms
^? 10.143.33.49 0 10 0 - +0ns[ +0ns] +/- 0ns
^* 100.100.3.1 2 10 377 671 -128us[ -124us] +/- 3286us
^+ 100.100.3.2 2 10 377 535 +1377us[+1377us] +/- 4689us
^+ 100.100.3.3 2 10 175 25m +151us[ +155us] +/- 4858us
^- 203.107.6.88 2 10 377 192 -2029us[-2029us] +/- 16ms
^? 10.143.33.50 0 10 0 - +0ns[ +0ns] +/- 0ns
^? 10.143.33.51 0 10 0 - +0ns[ +0ns] +/- 0ns
^? 10.143.0.44 0 10 0 - +0ns[ +0ns] +/- 0ns
^? 10.143.0.45 0 10 0 - +0ns[ +0ns] +/- 0ns
^? 10.143.0.46 0 10 0 - +0ns[ +0ns] +/- 0ns
^+ 100.100.5.1 2 10 377 388 +111us[ +111us] +/- 4041us
^+ 100.100.5.2 2 10 377 732 +1110us[+1114us] +/- 5489us
^+ 100.100.5.3 2 10 377 629 -638us[ -638us] +/- 4120us
查看当前系统的时间同步源状态信息:
[root@linuxcool ~]# chronyc sourcestats
Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev
==============================================================================
120.25.115.20 59 31 18h -0.011 0.019 -536us 875us
10.143.33.49 0 0 0 +0.000 2000.000 +0ns 4000ms
100.100.3.1 64 36 18h +0.000 0.012 +65us 493us
100.100.3.2 64 33 18h -0.004 0.011 -189us 498us
100.100.3.3 42 22 17h +0.006 0.015 +150us 471us
203.107.6.88 64 40 18h -0.005 0.034 -79us 1467us
10.143.33.50 0 0 0 +0.000 2000.000 +0ns 4000ms
10.143.33.51 0 0 0 +0.000 2000.000 +0ns 4000ms
10.143.0.44 0 0 0 +0.000 2000.000 +0ns 4000ms
10.143.0.45 0 0 0 +0.000 2000.000 +0ns 4000ms
10.143.0.46 0 0 0 +0.000 2000.000 +0ns 4000ms
100.100.5.1 42 24 11h +0.014 0.017 +344us 378us
100.100.5.2 64 37 18h -0.000 0.009 -221us 367us
100.100.5.3 64 28 18h -0.003 0.010 -131us 430us