# timedatectl status
               Local time: Wed 2025-10-22 15:36:02 CEST
           Universal time: Wed 2025-10-22 13:36:02 UTC
                 RTC time: Wed 2025-10-22 13:36:02
                Time zone: Europe/Paris (CEST, +0200)
System clock synchronized: no
              NTP service: inactive
          RTC in local TZ: no
# systemctl status chronyd
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2025-10-22 15:36:01 CEST; 2min 38s ago
     Docs: man:chronyd(8)
           man:chrony.conf(5)

Oct 22 15:36:00 R2S systemd[1]: Starting NTP client/server...
Oct 22 15:36:00 R2S chronyd[11263]: Invalid directive at line 39 in file /etc/chrony.conf
Oct 22 15:36:01 R2S systemd[1]: chronyd.service: Control process exited, code=exited status=1
Oct 22 15:36:01 R2S systemd[1]: chronyd.service: Failed with result 'exit-code'.
Oct 22 15:36:01 R2S systemd[1]: Failed to start NTP client/server.

Commentaire de la ligne n°19 :

# Select which information is logged.
#log measurements statistics tracking
#chronyc sources -v

Restart :

# systemctl status chronyd
● chronyd.service - NTP client/server
   Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; vendor preset: enabled)
   Active: active (running) since Wed 2025-10-22 15:41:15 CEST; 3s ago
     Docs: man:chronyd(8)
           man:chrony.conf(5)
  Process: 11555 ExecStartPost=/usr/libexec/chrony-helper update-daemon (code=exited, status=0/SUCCESS)
  Process: 11551 ExecStart=/usr/sbin/chronyd $OPTIONS (code=exited, status=0/SUCCESS)
 Main PID: 11553 (chronyd)
    Tasks: 2 (limit: 35804)
   Memory: 956.0K
   CGroup: /system.slice/chronyd.service
           └─11553 /usr/sbin/chronyd

Oct 22 15:41:15 R2S systemd[1]: Starting NTP client/server...
Oct 22 15:41:15 R2S chronyd[11553]: chronyd version 4.5 starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP +SCFILTER +SIGND +ASYNCDNS +NTS +SECHASH +IPV6 +DEBUG)
Oct 22 15:41:15 R2S chronyd[11553]: Loaded 0 symmetric keys
Oct 22 15:41:15 R2S chronyd[11553]: Frequency -5.242 +/- 0.044 ppm read from /var/lib/chrony/drift
Oct 22 15:41:15 R2S chronyd[11553]: Using right/UTC timezone to obtain leap second data
Oct 22 15:41:15 R2S systemd[1]: Started NTP client/server.

# timedatectl status
               Local time: Wed 2025-10-22 14:40:56 CEST
           Universal time: Wed 2025-10-22 12:40:56 UTC
                 RTC time: Wed 2025-10-22 14:40:56
                Time zone: Europe/Paris (CEST, +0200)
System clock synchronized: yes
              NTP service: active
          RTC in local TZ: no