I’m also noticing a lot of NTP stale info since I migrated from 1.6 to 2.0. Not to hijack this thread, but I think there’s a bug somewhere in Checkmk (running 2.0.0p16 CRE here).
This is the output of the agent (ubuntu node):
<<chrony:cached(1638645148,30)>>
Reference ID : C200057B (194.0.5.123)
Stratum : 3
Ref time (UTC) : Sat Dec 04 19:01:45 2021
System time : 0.000026125 seconds slow of NTP time
Last offset : -0.000039710 seconds
RMS offset : 0.000092087 seconds
Frequency : 45.778 ppm slow
Residual freq : -0.002 ppm
Skew : 0.086 ppm
Root delay : 0.009361028 seconds
Root dispersion : 0.004549814 seconds
Update interval : 1042.8 seconds
Leap status : Normal
The local timestamp on the node is
$ date +%s
1638645242
I don’t see any output in chrony that shows the last synchronized time, but still somehow Checkmk is throwing the error/warning for example:
Offset: 0.0195 ms, Stratum: 3, Time since last sync: 1 hour 1 minute (warn/crit at 1 hour 0 minutes/2 hours 0 minutes)WARN.