Embedded Files
This is the default time synchronization service on RHEL and derivatgives (e.g. Oracle, CentOS, Alma, Rocky)
Check sync sources...
chronyc sources -v
210 Number of sources = 2
.-- Source mode '^' = server, '=' = peer, '#' = local clock. / .- Source state '*' = current synced, '+' = combined , '-' = not combined,| / '?' = unreachable, 'x' = time may be in error, '~' = time too variable.|| .- xxxx [ yyyy ] +/- zzzz|| Reachability register (octal) -. | xxxx = adjusted offset,|| Log2(Polling interval) --. | | yyyy = measured offset,|| \ | | zzzz = estimated error.|| | | \MS Name/IP address Stratum Poll Reach LastRx Last sample===============================================================================^+ mytimeserver1.mydomain.c> 5 10 377 688 -5048us[-5153us] +/- 138ms^* mytimeserver2.mydomain.c> 5 10 377 279 +3405us[+3300us] +/- 131ms
.-- Source mode '^' = server, '=' = peer, '#' = local clock. / .- Source state '*' = current synced, '+' = combined , '-' = not combined,| / '?' = unreachable, 'x' = time may be in error, '~' = time too variable.|| .- xxxx [ yyyy ] +/- zzzz|| Reachability register (octal) -. | xxxx = adjusted offset,|| Log2(Polling interval) --. | | yyyy = measured offset,|| \ | | zzzz = estimated error.|| | | \MS Name/IP address Stratum Poll Reach LastRx Last sample===============================================================================^+ mytimeserver1.mydomain.c> 5 10 377 688 -5048us[-5153us] +/- 138ms^* mytimeserver2.mydomain.c> 5 10 377 279 +3405us[+3300us] +/- 131ms
Detailed sync status...
chronyc tracking
Note: chronyc tracking shows the last source that chronyd synchronized to — not necessarily one that is currently usable. Chrony does not immediately discard the last good source unless it determines it's invalid or out of tolerance.
Reference ID : 0AAC025B (mytimeserver2.mydomain.com)Stratum : 6Ref time (UTC) : Thu Feb 26 17:47:29 2026System time : 0.000841493 seconds fast of NTP timeLast offset : -0.000104801 secondsRMS offset : 0.002977083 secondsFrequency : 21.412 ppm slowResidual freq : +0.000 ppmSkew : 0.251 ppmRoot delay : 0.065094016 secondsRoot dispersion : 0.101566605 secondsUpdate interval : 1027.0 secondsLeap status : Normal
chronyc sourcestats -v
210 Number of sources = 2 .- Number of sample points in measurement set. / .- Number of residual runs with same sign. | / .- Length of measurement set (time). | | / .- Est. clock freq error (ppm). | | | / .- Est. error in freq. | | | | / .- Est. offset. | | | | | | On the -. | | | | | | samples. \ | | | | | | |Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev==============================================================================mytimeserver1.mydomain.c> 61 37 10h +0.020 0.205 -3485us 5769usmytimeserver2.mydomain.c> 34 15 569m -0.037 0.397 +3323us 6325us
chronyc ntpdata
chronyc selectdata
Page updated
Google Sites
Report abuse