[chrony-users] Fail to sync after eventual internet connection

[Alan Young <consult.awy@xxxxxxxxx>]

    Hi, any idea what is going wrong here?
    
    chronyd 4.3.
    
    When booted, the device had no internet connection available. Two
    devices are on the same subnet and configured for mutual
    synchronisation. This devices recognizes that the system time is off
    (by 54 years) but fails to correct it despite "makestep 0.002
      40". The other device corrected as expected.
Reference ID    : 05A1B894 (5.161.184.148)
Stratum         : 3
Ref time (UTC)  : Fri Feb 02 14:31:16 2024
System time     : 1706820608.000000000 seconds slow of NTP time
Last offset     : +0.000893572 seconds
RMS offset      : 144616960.000000000 seconds
Frequency       : 5.206 ppm fast
Residual freq   : +0.092 ppm
Skew            : 1.202 ppm
Root delay      : 0.041352827 seconds
Root dispersion : 0.001079195 seconds
Update interval : 259.5 seconds
Leap status     : Normal
MS Name/IP address         Stratum Poll Reach LastRx Last sample               
===============================================================================
^* 5.161.184.148                 2   9   377   135  +2320us[+3214us] +/-   21ms
^- 205.233.73.201                3   7   377   126  +1216us[+1216us] +/-  118ms
^- 74.208.117.38                 2   9   377   135  -1224us[-1224us] +/-   71ms
^+ 45.63.54.13                   2   9   367   123    +22us[  +22us] +/-   57ms
^x 192.168.64.139                4   6   377   43m  +5982us[+6730us] +/-   84ms
Name/IP Address            NP  NR  Span  Frequency  Freq Skew  Offset  Std Dev
==============================================================================
5.161.184.148              28  14   44m     +0.458      1.128   +845us  1344us
205.233.73.201             20  10   23m     +0.096      2.333  +1065us  1040us
74.208.117.38              27  18   44m     -0.840      1.282  -2107us  1244us
45.63.54.13                27  15   44m     -0.768      1.707  -1561us  1469us
192.168.64.139              6   3    20    +67.321      0.764   +183ms  1158ns

    Configuration:
# Use the default port for client requests in case it helps installations with picky firewalls
acquisitionport 123

# Where to keep client states across restarts
dumpdir /var/run/chrony

driftfile /var/data/chrony.drift

# Keep the hardware clock in sync
rtcsync

# Just enough to stop flip-flop to isolated network (default 0.001)
stratumweight 0.001

initstepslew 1 0.ntp.service.net 1.ntp.service.net 169.254.8.1

# Step any offset > 2 ms (of the first 40)
makestep 0.002 40

# And slew at no more than 2 ppm to prefer stable frequency
# and reduce impact of short-term inaccurate measurements.
maxslewrate 2

# Prefer stable frequency (smaller frequency error of the system clock)
# over rate of time offset correction (default 3)
corrtimeratio 20

# Expedited Forwarding
dscp 46

pool 1.ntp.service.net iburst trust

allow
cmdallow 169.254.5.230/16
bindcmdaddress 0.0.0.0

# Local fallback clock (default stratum 10)
local orphan
server 169.254.8.1 minpoll 2 maxpoll 6 burst iburst xleave

    Log messages from this device:
Jan  1 15:58:25 (none) daemon.info chronyd[510]: Can't synchronise: no selectable sources
Jan  1 15:58:28 (none) daemon.info chronyd[510]: Selected source 192.168.64.139
Jan  1 16:56:20 (none) daemon.info chronyd[510]: Selected source 5.161.184.148 (2.ntp.service.net)
Jan  1 16:56:20 (none) daemon.warn chronyd[510]: System clock wrong by 1706820647.650953 seconds

    Log messages from the other device that adjusted time correctly:
Jan  1 16:57:24 (none) daemon.info chronyd[1188]: Selected source 45.33.53.84 (1.ntp.service.net)
Jan  1 16:57:24 (none) daemon.warn chronyd[1188]: System clock wrong by 1706820647.657804 seconds
Feb  2 13:48:12 (none) daemon.warn chronyd[1188]: System clock was stepped by 1706820647.657804 seconds
Feb  2 13:49:18 (none) daemon.info chronyd[1188]: Selected source 129.250.35.251 (1.ntp.service.net)
Feb  2 13:49:18 (none) daemon.warn chronyd[1188]: System clock was stepped by -0.012136 seconds
Feb  2 13:49:45 (none) daemon.info chronyd[1188]: Selected source 192.168.64.181
Feb  2 13:49:45 (none) daemon.warn chronyd[1188]: System clock was stepped by 0.006996 seconds

    
    
    
  


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