NTPサーバー構築2011/11/09

時刻合わせのためのntpサーバーを構築します。

[root@dlp ~]#

yum -y install ntp

[root@dlp ~]#

vi /etc/ntp.conf

# 19行目：時刻同期を許可する範囲を追記

restrict 10.0.0.0 mask 255.255.255.0 nomodify notrap

# 同期をとるサーバーを変更

server 0.fedora.pool.ntp.org iburst

server 1.fedora.pool.ntp.org iburst

server 2.fedora.pool.ntp.org iburst

server 3.fedora.pool.ntp.org iburst

server ntp1.jst.mfeed.ad.jp

server ntp2.jst.mfeed.ad.jp

server ntp3.jst.mfeed.ad.jp

[root@dlp ~]#

systemctl start ntpd.service

Starting ntpd (via systemctl):

[ OK ]

[root@dlp ~]#

systemctl enable ntpd.service

ln -s '/lib/systemd/system/ntpd.service' '/etc/systemd/system/multi-user.target.wants/ntpd.service'
[root@dlp ~]#

ntpq -p

     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
 ntp1.jst.mfeed. 210.173.160.86   2 u   35   64    1   23.423  -324029   0.000
 ntp2.jst.mfeed. 210.173.160.56   2 u   35   64    1   25.503  -324029   0.000
 ntp3.jst.mfeed. 210.173.160.56   2 u   34   64    1   16.563  -324029   0.000