NTP : Configure NTP Server2025/10/31 |
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Install Chrony to Configure NTP Server for Time Synchronization. |
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| [1] | Install and Configure Chrony. |
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[root@dlp ~]#
dnf -y install chrony
[root@dlp ~]#
vi /etc/chrony.conf # line 8 : change servers to synchronize (replace to your own timezone NTP server) # need NTP server itself to sync time with other NTP servers # pool 2.fedora.pool.ntp.org iburst
pool ntp.nict.jp iburst
# line 32 : add network range to allow to receive time synchronization requests from NTP Clients # specify your local network and so on # if not specified, only localhost is allowed
allow 10.0.0.0/24
systemctl enable --now chronyd |
| [2] | If Firewalld is running, allow NTP service. NTP uses [123/UDP]. |
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[root@dlp ~]# firewall-cmd --add-service=ntp success [root@dlp ~]# firewall-cmd --runtime-to-permanent success |
| [3] | Verify it works normally. |
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[root@dlp ~]# chronyc sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^+ ntp-b2.nict.go.jp 1 6 17 5 -550us[ -746us] +/- 11ms ^* ntp-a3.nict.go.jp 1 6 17 6 +942us[ +746us] +/- 8175us ^+ ntp-a2.nict.go.jp 1 6 17 6 -296us[ -492us] +/- 9484us ^+ ntp-k1.nict.jp 1 6 17 6 -430us[ -626us] +/- 7002us |
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