Memo chronyc (ex ntpq)
Memo chronyc (ex ntpq):
- chronyc tracking :
Reference ID: This is the reference ID and name (or IP address) if available, of the server to which the computer is currently synchronized.
Stratum: The stratum indicates how many hops away from a computer with an attached reference clock you are.
Ref time: This is the time (UT C) at which the last measurement from the reference source was processed.
# chronyc tracking Reference ID : 192.0.2.1 (192.0.2.1) Stratum : 12 Ref time (UTC) : Fri Aug 05 19:06:51 2016 System time : 0.000823375 seconds fast of NTP time Last offset : 0.001989304 seconds RMS offset : 0.060942811 seconds Frequency : 1728.043 ppm slow Residual freq : 1.100 ppm Skew : 94.293 ppm Root delay : 0.000207 seconds Root dispersion : 0.016767 seconds Update interval : 65.1 seconds Leap status : Normal
- chronyc sources :
M: The mode of the source. ^ means a server, = means a peer, and # indicates
a locally connected reference clock.
S: The state of the sources. “*” indicates the source to which chronyd is currently synchronized. “+” indicates acceptable sources that are combined with the selected source. “-” indicates acceptable sources that are excluded by the combining algorithm. “?” indicates sources to which connectivity has been lost or whose packets do not pass all tests. “x” indicates a clock that chronyd thinks is a false ticker, that is, its time is inconsistent with a majority of other sources. “~” indicates a source whose time appears to have too much variability. The “?” condition is also shown at start-up, until at least three samples have been gathered from it.
Name/IP address: This shows the name or the IP address of the source, or reference ID for reference clocks.
# chronyc sources 210 Number of sources = 1 MS Name/IP address Stratum Poll Reach LastRx Last sample ===================================================== ^* 192.0.2.1 11 6 377 63 +1827us[+6783us]...
- chronyc sourcestats (ex ntpq -p):
retourne les infos sur le décalage par rapport au serveur de temps
# chronyc sourcestats 210 Number of sources = 1 Name/IP Address NP NR Span Frequency Freq Skew Offset Std Dev ================================================================================== 192.0.2.1 5 4 259 -747.564 1623.869 -2873us 30ms
Source :
https://www.thegeekdiary.com/centos-rhel-7-configuring-ntp-using-chrony/
https://docs-old.fedoraproject.org/en-US/Fedora/18/html/System_Administrators_Guide/sect-Checking_if_chrony_is_synchronized.html