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NTP Server : Configure NTP Server (Chrony)2023/06/14

 
Install Chrony and Configure NTP server for time adjustment. NTP uses 123/UDP.
[1] Install and Configure Chrony.
root@dlp:~#
apt -y install chrony
root@dlp:~#
vi /etc/chrony/chrony.conf
# line 8 : comment out default settings and add NTP Servers for your timezone

#pool 2.debian.pool.ntp.org iburst
pool ntp.nict.jp iburst 

# add to the end : network range you allow to receive time syncing requests from clients
allow 10.0.0.0/24 

root@dlp:~#
systemctl restart chrony
# verify status

root@dlp:~#
chronyc sources

MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^- ntp-a3.nict.go.jp             1   6    17     1   +582us[ +582us] +/- 9081us
^- ntp-b2.nict.go.jp             1   6    17     1  -1423us[-1423us] +/-   10ms
^- ntp-b3.nict.go.jp             1   6    17     1  +4168us[+4168us] +/-   16ms
^* ntp-a2.nict.go.jp             1   6    17     2   -298us[  -38us] +/- 9409us
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