Computer and IT knowledge - things to know
default setting is to have chrony installed
you can check with: rpm -qa |grep chrony
check file /etc/chrony.conf
in may case this was the ntp setting:
pool 2.rocky.pool.ntp.org iburst
comment out this line and change to your preferred ntp server
>> replace pool line with your ntp server
-------------------------------------------------------------
show update interval and other ntp status:
chronyc tracking
--------------------------------------------------------------
configure shorter update interval (default is 1024 seconds):
server ptbtime1.ptb.de iburst minpoll 4 maxpoll 6
server ptbtime2.ptb.de iburst minpoll 4 maxpoll 6
server ptbtime3.ptb.de iburst minpoll 4 maxpoll 6
poll explanation:
minpoll poll
This option specifies the minimum interval between requests sent to the server as a power of 2 in seconds. For example, minpoll 5 would mean that the polling interval should not drop below 32 seconds. The default is 6 (64 seconds), the minimum is -6 (1/64th of a second), and the maximum is 24 (6 months). Note that intervals shorter than 6 (64 seconds) should generally not be used with public servers on the Internet, because it might be considered abuse. A sub-second interval will be enabled only when the server is reachable and the round-trip delay is shorter than 10 milliseconds, i.e. the server should be in a local network.
maxpoll poll
This option specifies the maximum interval between requests sent to the server as a power of 2 in seconds. For example, maxpoll 9 indicates that the polling interval should stay at or below 9 (512 seconds). The default is 10 (1024 seconds), the minimum is -6 (1/64th of a second), and the maximum is 24 (6 months).
----------------------------------------------------------------
show sources:
chronyc sources -v
.-- Source mode '^' = server, '=' = peer, '#' = local clock.
/ .- Source state '*' = current best, '+' = combined, '-' = not combined,
| / 'x' = may be in error, '~' = too variable, '?' = unusable.
|| .- 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
===============================================================================
^* ptbtime1.ptb.de 1 6 17 23 +179us[+1141us] +/- 6840us
^- ptbtime2.ptb.de 1 6 17 23 +1743us[+1743us] +/- 5624us
^- ptbtime3.ptb.de 1 6 17 22 +950us[ +950us] +/- 6064us
computer2know :: thank you for your visit :: have a nice day :: © 2024