All technological notes.
Configure your system to synchronize the time from form "time.google.com".
yum install -y chrony
rpm -q chrony
# Edit the Configuration File
vi /etc/chrony.conf
server time.google.com iburst
# Restart and Enable the chronyd Service
systemctl restart chronyd
systemctl enable chronyd
# Verify Time Synchronization
systemctl status chronyd
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
# ===============================================================================
# ^* time.google.com 1 6 37 31 +21us[ -122us] +/- 17ms
# Confirm the current synchronization status
chronyc tracking
# Reference ID : D8EF2308 (time.google.com)
# Stratum : 2
# Ref time (UTC) : Sat Jan 25 22:18:10 2025
# System time : 0.000113358 seconds slow of NTP time
# Last offset : -0.000142851 seconds
# RMS offset : 0.000142851 seconds
# Frequency : 14.145 ppm slow
# Residual freq : -4.996 ppm
# Skew : 0.281 ppm
# Root delay : 0.033960786 seconds
# Root dispersion : 0.000887074 seconds
# Update interval : 65.2 seconds
# Leap status : Normal
# Test Time Synchronization
chronyc makestep
# 200 OK
date
# Allow NTP Traffic Through the Firewall
firewall-cmd --permanent --add-service=ntp
firewall-cmd --reload