20221103_4.19.157-perf+ harmonyos@localhost #1mon dec 11 11

在每天早上9点钟，让你的服务器通过ntp.aliyun.com和ntp.cent.com同步自己的时间
设置开机自动获取ip地址

[root@server ~]# nmcli connection modify ens160 ipv4.method auto ipv4.autoconnection yes
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查看时间服务器是否运行

[root@server ~]# systemctl status chronyd
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; disabled; vendor>
   Active: active (running) since Sun 2022-11-06 20:30:33 CST; 1h 5min ago
     Docs: man:chronyd(8)
           man:chrony.conf(5)
 Main PID: 9473 (chronyd)
    Tasks: 1 (limit: 11104)
   Memory: 1.4M
   CGroup: /system.slice/chronyd.service
           └─9473 /usr/sbin/chronyd

Nov 06 20:54:33 server chronyd[9473]: Source 162.159.200.123 replaced with 1>
Nov 06 21:33:26 server chronyd[9473]: Source 178.215.228.24 offline
Nov 06 21:33:26 server chronyd[9473]: Source 111.230.189.174 offline
Nov 06 21:33:26 server chronyd[9473]: Source 193.182.111.14 offline
Nov 06 21:33:26 server chronyd[9473]: Can't synchronise: no selectable sourc>
Nov 06 21:33:26 server chronyd[9473]: Source 202.118.1.81 offline
Nov 06 21:33:27 server chronyd[9473]: Source 178.215.228.24 online
Nov 06 21:33:27 server chronyd[9473]: Source 111.230.189.174 online
Nov 06 21:33:27 server chronyd[9473]: Source 193.182.111.14 online
Nov 06 21:33:27 server chronyd[9473]: Source 202.118.1.81 online

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设置客户端同步时间服务器的地址

[root@server ~]# vim /etc/chrony.conf 
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#pool 2.rhel.pool.ntp.org iburst
pool ntp.aliyun.com iburst
pool ntp.tencent.com iburst
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[root@server ~]# systemctl restart chronyd
[root@server ~]# systemctl status chronyd    
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; disabled; vendor preset: enabled)
   Active: active (running) since Sun 2022-11-06 21:39:49 CST; 19s ago
     Docs: man:chronyd(8)
           man:chrony.conf(5)
  Process: 10486 ExecStopPost=/usr/libexec/chrony-helper remove-daemon-state (code=exited, sta>
  Process: 10496 ExecStartPost=/usr/libexec/chrony-helper update-daemon (code=exited, status=0>
  Process: 10491 ExecStart=/usr/sbin/chronyd $OPTIONS (code=exited, status=0/SUCCESS)
 Main PID: 10494 (chronyd)
    Tasks: 1 (limit: 11104)
   Memory: 968.0K
   CGroup: /system.slice/chronyd.service
           └─10494 /usr/sbin/chronyd

Nov 06 21:39:49 server systemd[1]: chronyd.service: Succeeded.
Nov 06 21:39:49 server systemd[1]: Stopped NTP client/server.
Nov 06 21:39:49 server systemd[1]: Starting NTP client/server...
Nov 06 21:39:49 server chronyd[10494]: chronyd version 4.1 starting (+CMDMON +NTP +REFCLOCK +R>
Nov 06 21:39:49 server chronyd[10494]: Frequency -17.072 +/- 2.574 ppm read from /var/lib/chro>
Nov 06 21:39:49 server chronyd[10494]: Using right/UTC timezone to obtain leap second data
Nov 06 21:39:49 server systemd[1]: Started NTP client/server.
Nov 06 21:39:54 server chronyd[10494]: Selected source 203.107.6.88 (ntp.aliyun.com)
Nov 06 21:39:54 server chronyd[10494]: System clock TAI offset set to 37 seconds
Nov 06 21:40:00 server chronyd[10494]: Selected source 139.199.215.251 (ntp.tencent.com)

[root@server ~]# chronyc sources
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* 203.107.6.88                  2   6   377    11  +2078us[+3247us] +/-   51ms
^+ 139.199.215.251               2   6   377     5  +2589us[+2589us] +/-   23ms

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查看计划人物

[root@server ~]# crontab -l
0 9 * * * chronyc sources

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