Linux时间同步服务
- 加密时，对时间要求很严格
- 企业中的还能多服务是依赖时间的
- CentOS7之前的版本可以使用ntp
- CentOS 8中取消了ntpdate
搭建时间同步服务器步骤
- 确保chrony已安装，服务已运行，并可以实现时间同步
使用systemctl查看chronyd状态为active
systemctl status chronyd.service
● chronyd.service - NTP client/serverLoaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; v>Active: active (running) since Tue 2021-04-27 23:02:58 EDT; 2h 19mi>Docs: man:chronyd(8)
……
查看服务器时间同步状态
chronyc sources -v
210 Number of sources = 4.-- Source mode '^' = server, '=' = peer, '#' = local clock./ .- Source state '*' = current synced, '+' = combined , '-' = not combined,
| / '?' = unreachable, 'x' = time may be in error, '~' = time too variable.
|| .- 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
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