Configure NTP Server(Chrony)2017/06/18

	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 3: comment out

pool 2.debian.pool.ntp.org iburst

# add servers in your timezone to sync times

server ntp.nict.jp iburst
server ntp1.jst.mfeed.ad.jp iburst
server ntp2.jst.mfeed.ad.jp iburst

# add to the end : add the network range you allow to receive requests

allow 10.0.0.0/24

root@dlp:~#

systemctl restart chrony

# show status

root@dlp:~#

chronyc sources

210 Number of sources = 3
MS Name/IP address         Stratum Poll Reach LastRx Last sample
===============================================================================
^* ntp-a2.nict.go.jp             1   6     7     1   +508us[ +446us] +/- 9385us
^- ntp1.jst.mfeed.ad.jp          2   6     7     1  -1555us[-1617us] +/-   82ms
^- ntp2.jst.mfeed.ad.jp          2   6     7     1  -1476us[-1538us] +/-  101ms

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