Switched from ntpd to chrony, no data anymore

Monitoring Operators
1

Hi, I switched one of my servers from ntpd to chrony; since then, there are no data anymore :

The output of chronyc :

root@aragorn:~# chronyc -n tracking
Reference ID : 91EE5050 (145.238.80.80)
Stratum : 2
Ref time (UTC) : Mon Feb 09 12:01:26 2026
System time : 0.000040531 seconds fast of NTP time
Last offset : -0.000021177 seconds
RMS offset : 0.000104241 seconds
Frequency : 9.948 ppm fast
Residual freq : -0.003 ppm
Skew : 0.070 ppm
Root delay : 0.004642044 seconds
Root dispersion : 0.000315822 seconds
Update interval : 517.4 seconds
Leap status : Normal

The firewall is opened :

root@aragorn:~# ufw status | grep 123
123/udp ALLOW Anywhere
123/udp (v6) ALLOW Anywhere (v6)

What happens ?

Regards,

Xavier

2

Did you allow access? As it’s disabled by default:

# By default, chronyd does not allow any clients to access it.  You need
# to explicitly enable access using 'allow' and 'deny' directives.
# e.g. to enable client access from the 192.168.*.* class B subnet,
allow 127.0.0.1
allow 192.168.1.0/24
allow all

/etc/chrony/chrony.conf

1 Like
3

Ah ! Stupid me forgot that.

Thanks !

1 Like