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Configure NTP Server : Chrony
2017/12/13 |
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Install Chrony and Configure NTP server for time adjustment.
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| [1] | Install Chrony. |
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[root@dlp ~]#
dnf -y install chrony
[root@dlp ~]#
vi /etc/chrony.conf # line 3: change servers for synchronization (replace to your timezone's one) # pool 2.fedora.pool.ntp.org iburst
server ntp.nict.jp iburst
server ntp1.jst.mfeed.ad.jp iburst # line 25: add the network range you allow to receive requests
allow 10.0.0.0/24
systemctl start chronyd [root@dlp ~]# systemctl enable chronyd |
| [2] | If Firewalld is running, allow NTP service. NTP uses 123/UDP. |
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[root@dlp ~]# firewall-cmd --add-service=ntp --permanent success [root@dlp ~]# firewall-cmd --reload success |
| [3] | Verify it works normally like follows. |
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[root@dlp ~]# chronyc sources 210 Number of sources = 2 MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== ^* ntp-a3.nict.go.jp 1 6 17 4 +154us[ +261us] +/- 8680us ^- ntp1.jst.mfeed.ad.jp 2 6 17 4 -1960us[-1960us] +/- 89ms |